{"id":9032,"date":"2022-12-08T21:03:11","date_gmt":"2022-12-08T13:03:11","guid":{"rendered":"http:\/\/123.57.164.21\/?p=9032"},"modified":"2022-12-08T21:03:11","modified_gmt":"2022-12-08T13:03:11","slug":"java%e6%b3%9b%e5%9e%8b%e8%af%a6%e8%a7%a3%ef%bc%9a%e5%92%8cclass%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=9032","title":{"rendered":"Java\u6cdb\u578b\u8be6\u89e3\uff1a\u548cClass\u7684\u4f7f\u7528"},"content":{"rendered":"\n

\u4e00\u3001\u5f15\u5165<\/strong><\/p>\n\n\n\n

\n\n\n\n

1\u3001\u6cdb\u578b\u662f\u4ec0\u4e48<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u9996\u5148\u544a\u8bc9\u5927\u5bb6ArrayList\u5c31\u662f\u6cdb\u578b\u3002\u90a3ArrayList\u80fd\u5b8c\u6210\u54ea\u4e9b\u60f3\u4e0d\u5230\u7684\u529f\u80fd\u5462\uff1f\u5148\u770b\u770b\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff1a<\/p>\n\n\n\n

ArrayList<String> strList = new ArrayList<String>();  \nArrayList<Integer> intList = new ArrayList<Integer>();  \nArrayList<Double> doubleList = new ArrayList<Double>();  <\/pre>\n\n\n\n
\u5927\u5bb6\u5bf9ArrayList\u5f88\u719f\u6089\uff0c\u8fd9\u91cc\u6784\u9020\u4e86\u4e09\u4e2aList,\u5206\u522b\u76db\u88c5String\u3001Integer\u548cDouble\uff1b\u8fd9\u5c31\u662fArrayList\u7684\u8fc7\u4eba\u4e4b\u5904\uff1a\u5373\u5404\u79cd\u7c7b\u578b\u7684\u53d8\u91cf\u90fd\u53ef\u4ee5\u7ec4\u88c5\u6210\u5bf9\u5e94\u7684List\uff0c\u800c\u4e0d\u5fc5\u9488\u5bf9\u6bcf\u4e2a\u7c7b\u578b\u5206\u522b\u5b9e\u73b0\u4e00\u4e2a\u6784\u5efaArrayList\u7684\u7c7b\u3002\u8fd9\u91cc\u53ef\u80fd\u770b\u4e0d\u61c2\uff0c\u5f00\u7bc7\u603b\u662f\u56f0\u96be\u7684\uff0c\u4e0b\u9762\u770b\u770b\u5982\u679c\u6ca1\u6709\u6cdb\u578b\u7684\u8bdd\uff0c\u6211\u4eec\u8981\u600e\u4e48\u505a\uff1b<\/p>\n\n\n\n
2\u3001\u6ca1\u6709\u6cdb\u578b\u4f1a\u600e\u6837<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u5148\u770b\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff1a<\/p>\n\n\n\n
\u6211\u4eec\u5b9e\u73b0\u4e24\u4e2a\u80fd\u591f\u8bbe\u7f6e\u70b9\u5750\u6807\u7684\u7c7b\uff0c\u5206\u522b\u8bbe\u7f6eInteger\u7c7b\u578b\u7684\u70b9\u5750\u6807\u548cFloat\u7c7b\u578b\u7684\u70b9\u5750\u6807\uff1a<\/p>\n\n\n\n
\/\/\u8bbe\u7f6eInteger\u7c7b\u578b\u7684\u70b9\u5750\u6807  \nclass IntegerPoint{  \n    private Integer x ;       \/\/ \u8868\u793aX\u5750\u6807  \n    private Integer y ;       \/\/ \u8868\u793aY\u5750\u6807  \n    public void setX(Integer x){  \n        this.x = x ;  \n    }  \n    public void setY(Integer y){  \n        this.y = y ;  \n    }  \n    public Integer getX(){  \n        return this.x ;  \n    }  \n    public Integer getY(){  \n        return this.y ;  \n    }  \n}  \n\/\/\u8bbe\u7f6eFloat\u7c7b\u578b\u7684\u70b9\u5750\u6807  \nclass FloatPoint{  \n    private Float x ;       \/\/ \u8868\u793aX\u5750\u6807  \n    private Float y ;       \/\/ \u8868\u793aY\u5750\u6807  \n    public void setX(Float x){  \n        this.x = x ;  \n    }  \n    public void setY(Float y){  \n        this.y = y ;  \n    }  \n    public Float getX(){  \n        return this.x ;  \n    }  \n    public Float getY(){  \n        return this.y ;  \n    }  \n}  <\/pre>\n\n\n\n
\u90a3\u73b0\u5728\u6709\u4e2a\u95ee\u9898\uff1a\u5927\u5bb6\u6709\u6ca1\u6709\u53d1\u73b0\uff0c\u4ed6\u4eec\u9664\u4e86\u53d8\u91cf\u7c7b\u578b\u4e0d\u4e00\u6837\uff0c\u4e00\u4e2a\u662fInteger\u4e00\u4e2a\u662fFloat\u4ee5\u5916\uff0c\u5176\u5b83\u5e76\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\uff01\u90a3\u6211\u4eec\u80fd\u4e0d\u80fd\u5408\u5e76\u6210\u4e00\u4e2a\u5462\uff1f<\/p>\n\n\n\n
\u7b54\u6848\u662f\u53ef\u4ee5\u7684\uff0c\u56e0\u4e3aInteger\u548cFloat\u90fd\u662f\u6d3e\u751f\u81eaObject\u7684\uff0c\u6211\u4eec\u7528\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u4ee3\u66ff\uff1a<\/p>\n\n\n\n
class ObjectPoint{  \n    private Object x ;  \n    private Object y ;  \n    public void setX(Object x){  \n        this.x = x ;  \n    }  \n    public void setY(Object y){  \n        this.y = y ;  \n    }  \n    public Object getX(){  \n        return this.x ;  \n    }  \n    public Object getY(){  \n        return this.y ;  \n    }  \n}  <\/pre>\n\n\n\n
\u5373\u5168\u90e8\u90fd\u7528Object\u6765\u4ee3\u66ff\u6240\u6709\u7684\u5b50\u7c7b\uff1b<\/p>\n\n\n\n
\u5728\u4f7f\u7528\u7684\u65f6\u5019\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
ObjectPoint integerPoint = new ObjectPoint();  \nintegerPoint.setX(new Integer(100));  \nInteger integerX=(Integer)integerPoint.getX();  <\/pre>\n\n\n\n
\u5728\u8bbe\u7f6e\u7684\u65f6\u5019\uff0c\u4f7f\u7528new Integer(100)\u6765\u65b0\u5efa\u4e00\u4e2aInteger<\/p>\n\n\n\n
 integerPoint.setX(new Integer(100));  <\/pre>\n\n\n\n
\u7136\u540e\u5728\u53d6\u503c\u7684\u65f6\u5019\uff0c\u8fdb\u884c\u5f3a\u5236\u8f6c\u6362\uff1a<\/p>\n\n\n\n
Integer integerX=(Integer)integerPoint.getX();  <\/pre>\n\n\n\n
\u7531\u4e8e\u6211\u4eec\u8bbe\u7f6e\u7684\u65f6\u5019\uff0c\u662f\u8bbe\u7f6e\u7684Integer\uff0c\u6240\u4ee5\u5728\u53d6\u503c\u7684\u65f6\u5019\uff0c\u5f3a\u5236\u8f6c\u6362\u662f\u4e0d\u4f1a\u51fa\u9519\u7684\u3002<\/p>\n\n\n\n
\u540c\u7406\uff0cFloatPoint\u7684\u8bbe\u7f6e\u548c\u53d6\u503c\u4e5f\u662f\u7c7b\u4f3c\u7684\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n
ObjectPoint floatPoint = new ObjectPoint();  \nfloatPoint.setX(new Float(100.12f));  \nFloat floatX = (Float)floatPoint.getX();  \n\n<\/pre>\n\n\n\n
<\/pre>\n\n\n\n
\u4f46\u95ee\u9898\u6765\u4e86\uff1a\u6ce8\u610f\uff0c\u6ce8\u610f\uff0c\u6211\u4eec\u8fd9\u91cc\u4f7f\u7528\u4e86\u5f3a\u5236\u8f6c\u6362\uff0c\u6211\u4eec\u8fd9\u91ccsetX\uff08\uff09\u548cgetX\uff08\uff09\u5199\u5f97\u5f88\u8fd1\uff0c\u6240\u4ee5\u6211\u4eec\u660e\u786e\u7684\u77e5\u9053\u6211\u4eec\u4f20\u8fdb\u53bb\u7684\u662fFloat\u7c7b\u578b\uff0c\u90a3\u5982\u679c\u6211\u4eec\u8bb0\u9519\u4e86\u5462\uff1f<\/p>\n\n\n\n
\u6bd4\u5982\u6211\u4eec\u6539\u6210\u4e0b\u9762\u8fd9\u6837\uff0c\u7f16\u8bd1\u65f6\u4f1a\u62a5\u9519\u5417\uff1a<\/p>\n\n\n\n
 ObjectPoint floatPoint = new ObjectPoint();  \nfloatPoint.setX(new Float(100.12f));  \nString floatX = (String)floatPoint.getX();  \n\n<\/pre>\n\n\n\n
\u4e0d\u4f1a\uff01\uff01\uff01\u6211\u4eec\u95ee\u9898\u7684\u5173\u952e\u5728\u4e8e\u8fd9\u53e5\uff1a<\/p>\n\n\n\n
String floatX = (String)floatPoint.getX();  <\/pre>\n\n\n\n
\u5f3a\u5236\u8f6c\u6362\u65f6\uff0c\u4f1a\u4e0d\u4f1a\u51fa\u9519\u3002\u56e0\u4e3a\u7f16\u8bd1\u5668\u4e5f\u4e0d\u77e5\u9053\u4f60\u4f20\u8fdb\u53bb\u7684\u662f\u4ec0\u4e48\uff0c\u800cfloatPoint.getX()\u8fd4\u56de\u7684\u7c7b\u578b\u662fObject\uff0c\u6240\u4ee5\u7f16\u8bd1\u65f6\uff0c\u5c06Object\u5f3a\u8f6c\u6210String\u662f\u6210\u7acb\u7684\u3002\u5fc5\u7136\u4e0d\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
\u800c\u5728\u8fd0\u884c\u65f6\uff0c\u5219\u4e0d\u7136\uff0c\u5728\u8fd0\u884c\u65f6\uff0cfloatPoint\u5b9e\u4f8b\u4e2d\u660e\u660e\u4f20\u8fdb\u53bb\u7684\u662fFloat\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u975e\u8981\u628a\u5b83\u5f3a\u8f6c\u6210String\u7c7b\u578b\uff0c\u80af\u5b9a\u4f1a\u62a5\u7c7b\u578b\u8f6c\u6362\u9519\u8bef\u7684\uff01<\/p>\n\n\n\n
\u90a3\u6709\u6ca1\u6709\u4e00\u79cd\u529e\u6cd5\u5728\u7f16\u8bd1\u9636\u6bb5\uff0c\u5373\u80fd\u5408\u5e76\u6210\u540c\u4e00\u4e2a\uff0c\u53c8\u80fd\u5728\u7f16\u8bd1\u65f6\u68c0\u67e5\u51fa\u6765\u4f20\u8fdb\u53bb\u7c7b\u578b\u4e0d\u5bf9\u5462\uff1f\u5f53\u7136\uff0c\u8fd9\u5c31\u662f\u6cdb\u578b\u3002<\/p>\n\n\n\n
\u4e0b\u9762\u6211\u4eec\u5c06\u5bf9\u6cdb\u578b\u7684\u5199\u6cd5\u548c\u7528\u6cd5\u505a\u4e00\u4e00\u8bb2\u89e3\u3002<\/p>\n\n\n\n
\u4e8c\u3001\u5404\u79cd\u6cdb\u578b\u5b9a\u4e49\u53ca\u4f7f\u7528<\/strong><\/p>\n\n\n\n
\n\n\n\n
1\u3001\u6cdb\u578b\u7c7b\u5b9a\u4e49\u53ca\u4f7f\u7528<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u6211\u4eec\u5148\u770b\u770b\u6cdb\u578b\u7684\u7c7b\u662f\u600e\u4e48\u5b9a\u4e49\u7684\uff1a<\/p>\n\n\n\n
\/\/\u5b9a\u4e49  \nclass Point<T>{\/\/ \u6b64\u5904\u53ef\u4ee5\u968f\u4fbf\u5199\u6807\u8bc6\u7b26\u53f7   \n    private T x ;        \n    private T y ;        \n    public void setX(T x){\/\/\u4f5c\u4e3a\u53c2\u6570  \n        this.x = x ;  \n    }  \n    public void setY(T y){  \n        this.y = y ;  \n    }  \n    public T getX(){\/\/\u4f5c\u4e3a\u8fd4\u56de\u503c  \n        return this.x ;  \n    }  \n    public T getY(){  \n        return this.y ;  \n    }  \n};  \n\/\/IntegerPoint\u4f7f\u7528  \nPoint<Integer> p = new Point<Integer>() ;   \np.setX(new Integer(100)) ;   \nSystem.out.println(p.getX());    \n  \n\/\/FloatPoint\u4f7f\u7528  \nPoint<Float> p = new Point<Float>() ;   \np.setX(new Float(100.12f)) ;   \nSystem.out.println(p.getX());    <\/pre>\n\n\n\n
\u5148\u770b\u770b\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4ece\u7ed3\u679c\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u5b9e\u73b0\u4e86\u5f00\u7bc7\u4e2dIntegerPoint\u7c7b\u548cFloatPoint\u7c7b\u7684\u6548\u679c\u3002\u4e0b\u9762\u6765\u770b\u770b\u6cdb\u578b\u662f\u600e\u4e48\u5b9a\u4e49\u53ca\u4f7f\u7528\u7684\u5427\u3002<\/p>\n\n\n\n
  • \u5b9a\u4e49\u6cdb\u578b\uff1aPoint<T><\/li><\/ul>\n\n\n\n
    \u9996\u5148\uff0c\u5927\u5bb6\u53ef\u4ee5\u770b\u5230Point\uff0c\u5373\u5728\u7c7b\u540d\u540e\u9762\u52a0\u4e00\u4e2a\u5c16\u62ec\u53f7\uff0c\u62ec\u53f7\u91cc\u662f\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u3002\u8fd9\u91cc\u5199\u7684\u662fT\uff0c\u5176\u5b9e\u8fd9\u4e2a\u5b57\u6bcd\u53ef\u4ee5\u662f\u4efb\u4f55\u5927\u5199\u5b57\u6bcd\uff0c\u5927\u5bb6\u8fd9\u91cc\u5148\u8bb0\u7740\uff0c\u53ef\u4ee5\u662f\u4efb\u4f55\u5927\u5199\u5b57\u6bcd\uff0c\u610f\u4e49\u662f\u76f8\u540c\u7684\u3002<\/p>\n\n\n\n
    • \u7c7b\u4e2d\u4f7f\u7528\u6cdb\u578b<\/li><\/ul>\n\n\n\n
      \u8fd9\u4e2aT\u8868\u793a\u6d3e\u751f\u81eaObject\u7c7b\u7684\u4efb\u4f55\u7c7b\uff0c\u6bd4\u5982String,Integer,Double\u7b49\u7b49\u3002\u8fd9\u91cc\u8981\u6ce8\u610f\u7684\u662f\uff0cT\u4e00\u5b9a\u662f\u6d3e\u751f\u4e8eObject\u7c7b\u7684\u3002\u4e3a\u65b9\u4fbf\u8d77\u89c1\uff0c\u5927\u5bb6\u53ef\u4ee5\u5728\u8fd9\u91cc\u628aT\u5f53\u6210String,\u5373String\u5728\u7c7b\u4e2d\u600e\u4e48\u7528\uff0c\u90a3T\u5728\u7c7b\u4e2d\u5c31\u53ef\u4ee5\u600e\u4e48\u7528\uff01\u6240\u4ee5\u4e0b\u9762\u7684\uff1a\u5b9a\u4e49\u53d8\u91cf\uff0c\u4f5c\u4e3a\u8fd4\u56de\u503c\uff0c\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\u7684\u5b9a\u4e49\u5c31\u5f88\u5bb9\u6613\u7406\u89e3\u4e86\u3002<\/p>\n\n\n\n
      \/\/\u5b9a\u4e49\u53d8\u91cf  \nprivate T x ;   \n\/\/\u4f5c\u4e3a\u8fd4\u56de\u503c  \npublic T getX(){   \n    return x ;    \n}    \n\/\/\u4f5c\u4e3a\u53c2\u6570  \npublic void setX(T x){    \n    this.x = x ;    \n}   <\/pre>\n\n\n\n
      • \u4f7f\u7528\u6cdb\u578b\u7c7b<\/li><\/ul>\n\n\n\n
        \u4e0b\u9762\u662f\u6cdb\u578b\u7c7b\u7684\u7528\u6cd5\uff1a<\/p>\n\n\n\n
        \/\/IntegerPoint\u4f7f\u7528  \nPoint<Integer> p = new Point<Integer>() ;   \np.setX(new Integer(100)) ;   \nSystem.out.println(p.getX());    \n  \n\/\/FloatPoint\u4f7f\u7528  \nPoint<Float> p = new Point<Float>() ;   \np.setX(new Float(100.12f)) ;   \nSystem.out.println(p.getX());  <\/pre>\n\n\n\n
        \u9996\u5148\uff0c\u662f\u6784\u9020\u4e00\u4e2a\u5b9e\u4f8b\uff1a<\/p>\n\n\n\n
        Point<String> p = new Point<String>() ;   <\/pre>\n\n\n\n
        \u8fd9\u91cc\u4e0e\u666e\u901a\u6784\u9020\u7c7b\u5b9e\u4f8b\u7684\u4e0d\u540c\u4e4b\u70b9\u5728\u4e8e\uff0c\u666e\u901a\u7c7b\u6784\u9020\u51fd\u6570\u662f\u8fd9\u6837\u7684\uff1aPoint p = new Point() ;<\/p>\n\n\n\n
        \u800c\u6cdb\u578b\u7c7b\u7684\u6784\u9020\u5219\u9700\u8981\u5728\u7c7b\u540d\u540e\u6dfb\u52a0\u4e0a<String>\uff0c\u5373\u4e00\u5bf9\u5c16\u62ec\u53f7\uff0c\u4e2d\u95f4\u5199\u4e0a\u8981\u4f20\u5165\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n
        \u56e0\u4e3a\u6211\u4eec\u6784\u9020\u65f6\uff0c\u662f\u8fd9\u6837\u7684\uff1aclass Point<T>,\u6240\u4ee5\u5728\u4f7f\u7528\u7684\u65f6\u5019\u4e5f\u8981\u5728Point\u540e\u52a0\u4e0a\u7c7b\u578b\u6765\u5b9a\u4e49T\u4ee3\u8868\u7684\u610f\u4e49\u3002<\/p>\n\n\n\n
        \u7136\u540e\u5728getVar\uff08\uff09\u548csetVar\uff08\uff09\u65f6\u5c31\u6ca1\u6709\u4ec0\u4e48\u7279\u6b8a\u7684\u4e86\uff0c\u76f4\u63a5\u8c03\u7528\u5373\u53ef\u3002<\/p>\n\n\n\n
        \u4ece\u4e0a\u9762\u7684\u4f7f\u7528\u65f6\uff0c\u660e\u663e\u53ef\u4ee5\u770b\u51fa\u6cdb\u578b\u7684\u4f5c\u7528\uff0c\u5728\u6784\u9020\u6cdb\u578b\u7c7b\u7684\u5b9e\u4f8b\u7684\u65f6\u5019\uff1a<\/p>\n\n\n\n
        \/\/IntegerPoint\u4f7f\u7528  \nPoint<Integer> p = new Point<Integer>() ;   \n\/\/FloatPoint\u4f7f\u7528  \nPoint<Float> p = new Point<Float>() ;   <\/pre>\n\n\n\n
        \u5c16\u62ec\u53f7\u4e2d\uff0c\u4f60\u4f20\u8fdb\u53bb\u7684\u662f\u4ec0\u4e48\uff0cT\u5c31\u4ee3\u8868\u4ec0\u4e48\u7c7b\u578b\u3002\u8fd9\u5c31\u662f\u6cdb\u578b\u7684\u6700\u5927\u4f5c\u7528\uff0c\u6211\u4eec\u53ea\u9700\u8981\u8003\u8651\u903b\u8f91\u5b9e\u73b0\uff0c\u5c31\u80fd\u62ff\u7ed9\u5404\u79cd\u7c7b\u6765\u7528\u3002<\/p>\n\n\n\n
        \u524d\u9762\u6211\u4eec\u63d0\u5230ArrayList\u4e5f\u662f\u6cdb\u578b\uff0c\u6211\u4eec\u987a\u4fbf\u5b83\u7684\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
        public class ArrayList<E>{  \n    \u2026\u2026\u2026\u2026  \n}  <\/pre>\n\n\n\n
        \u770b\u5230\u4e86\u5427\uff0c\u8ddf\u6211\u4eec\u7684Point\u5b9e\u73b0\u662f\u4e00\u6837\u7684\uff0c\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48ArrayList\u80fd\u591f\u76db\u88c5\u5404\u79cd\u7c7b\u578b\u7684\u4e3b\u8981\u539f\u56e0\u3002<\/p>\n\n\n\n
        • \u4f7f\u7528\u6cdb\u578b\u5b9e\u73b0\u7684\u4f18\u52bf<\/li><\/ul>\n\n\n\n
          \u76f8\u6bd4\u6211\u4eec\u5f00\u7bc7\u65f6\u4f7f\u7528Object\u7684\u65b9\u5f0f\uff0c\u6709\u4e24\u4e2a\u4f18\u70b9\uff1a<\/p>\n\n\n\n
          1.\u4e0d\u7528\u5f3a\u5236\u8f6c\u6362<\/p>\n\n\n\n
          \/\/\u4f7f\u7528Object\u4f5c\u4e3a\u8fd4\u56de\u503c\uff0c\u8981\u5f3a\u5236\u8f6c\u6362\u6210\u6307\u5b9a\u7c7b\u578b  \nFloat floatX = (Float)floatPoint.getX();  \n\/\/\u4f7f\u7528\u6cdb\u578b\u65f6\uff0c\u4e0d\u7528\u5f3a\u5236\u8f6c\u6362\uff0c\u76f4\u63a5\u51fa\u6765\u5c31\u662fString  \nSystem.out.println(p.getVar());   <\/pre>\n\n\n\n
          2.\u5728settVar()\u65f6\u5982\u679c\u4f20\u5165\u7c7b\u578b\u4e0d\u5bf9\uff0c\u7f16\u8bd1\u65f6\u4f1a\u62a5\u9519<\/p>\n\n\n\n
          \"\"<\/figure><\/div>\n\n\n\n
          \u53ef\u4ee5\u770b\u5230\uff0c\u5f53\u6211\u4eec\u6784\u9020\u65f6\u4f7f\u7528\u7684\u662fString,\u800c\u5728setVar\u65f6\uff0c\u4f20\u8fdb\u53bbInteger\u7c7b\u578b\u65f6\uff0c\u5c31\u4f1a\u62a5\u9519\u3002\u800c\u4e0d\u662f\u50cfObject\u5b9e\u73b0\u65b9\u5f0f\u4e00\u6837\uff0c\u5728\u8fd0\u884c\u65f6\u624d\u4f1a\u62a5\u5f3a\u5236\u8f6c\u6362\u9519\u8bef\u3002<\/p>\n\n\n\n
          2\u3001\u591a\u6cdb\u578b\u53d8\u91cf\u5b9a\u4e49\u53ca\u5b57\u6bcd\u89c4\u8303<\/strong><\/p>\n\n\n\n
          \n\n\n\n
           2.1 \u3001\u591a\u6cdb\u578b\u53d8\u91cf\u5b9a\u4e49<\/strong><\/p>\n\n\n\n
          \u4e0a\u5728\u6211\u4eec\u53ea\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6cdb\u578b\u53d8\u91cfT\uff0c\u90a3\u5982\u679c\u6211\u4eec\u9700\u8981\u4f20\u8fdb\u53bb\u591a\u4e2a\u6cdb\u578b\u8981\u600e\u4e48\u529e\u5462\uff1f<\/p>\n\n\n\n
          \u53ea\u9700\u8981\u5728\u7c7b\u4f3c\u4e0b\u9762\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e86\uff1a<\/p>\n\n\n\n
          class MorePoint<T,U>{  \n}  <\/pre>\n\n\n\n
          \u4e5f\u5c31\u662f\u5728\u539f\u6765\u7684T\u540e\u9762\u7528\u9017\u53f7\u9694\u5f00\uff0c\u5199\u4e0a\u5176\u5b83\u7684\u4efb\u610f\u5927\u5199\u5b57\u6bcd\u5373\u53ef\u3002\u60f3\u52a0\u51e0\u4e2a\u5c31\u52a0\u51e0\u4e2a\uff0c\u6bd4\u5982\u6211\u4eec\u60f3\u52a0\u4e94\u4e2a\u6cdb\u578b\u53d8\u91cf\uff0c\u90a3\u5e94\u8be5\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
          [java]  view plain  copy\nclass MorePoint<T,U,A,B,C>{  \n}  <\/pre>\n\n\n\n
          \u4e3e\u4e2a\u7c9f\u5b50\uff0c\u6211\u4eec\u5728Point\u4e0a\u518d\u53e6\u52a0\u4e00\u4e2a\u5b57\u6bb5name\uff0c\u4e5f\u7528\u6cdb\u578b\u6765\u8868\u793a\uff0c\u90a3\u8981\u600e\u4e48\u505a\uff1f\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n
          class MorePoint<T,U> {  \n    private T x;  \n    private T y;         \n  \n    private U name;  \n  \n    public void setX(T x) {  \n        this.x = x;  \n    }  \n    public T getX() {  \n        return this.x;  \n    }  \n    \u2026\u2026\u2026\u2026  \n    public void setName(U name){  \n        this.name = name;  \n    }  \n  \n    public U getName() {  \n        return this.name;  \n    }  \n}  \n\/\/\u4f7f\u7528  \nMorePoint<Integer,String> morePoint = new MorePoint<Integer, String>();  \nmorePoint.setName(\"harvic\");  \nLog.d(TAG, \"morPont.getName:\" + morePoint.getName());  <\/pre>\n\n\n\n
          \u4ece\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u53ef\u4ee5\u660e\u663e\u770b\u51fa\uff0c\u5c31\u662f\u5728\u65b0\u6dfb\u52a0\u7684\u6cdb\u578b\u53d8\u91cfU\u7528\u6cd5\u4e0eT\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n
          2.2\u3001\u5b57\u6bcd\u89c4\u8303<\/strong><\/p>\n\n\n\n
          \u5728\u5b9a\u4e49\u6cdb\u578b\u7c7b\u65f6\uff0c\u6211\u4eec\u5df2\u7ecf\u63d0\u5230\u7528\u4e8e\u6307\u5b9a\u6cdb\u578b\u7684\u53d8\u91cf\u662f\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\uff1a<\/p>\n\n\n\n
          class Point<T>{  \n \u2026\u2026\u2026\u2026  \n}  <\/pre>\n\n\n\n
          \u5f53\u7136\u4e0d\u662f\u7684\uff01\uff01\uff01\uff01\u4efb\u610f\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u90fd\u53ef\u4ee5\u3002\u4ed6\u4eec\u7684\u610f\u4e49\u662f\u5b8c\u5168\u76f8\u540c\u7684\uff0c\u4f46\u4e3a\u4e86\u63d0\u9ad8\u53ef\u8bfb\u6027\uff0c\u5927\u5bb6\u8fd8\u662f\u7528\u6709\u610f\u4e49\u7684\u5b57\u6bcd\u6bd4\u8f83\u597d\uff0c\u4e00\u822c\u6765\u8bb2\uff0c\u5728\u4e0d\u540c\u7684\u60c5\u5883\u4e0b\u4f7f\u7528\u7684\u5b57\u6bcd\u610f\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n
          • E \u2014 Element\uff0c\u5e38\u7528\u5728java Collection\u91cc\uff0c\u5982\uff1aList<E>,Iterator<E>,Set<E><\/li>
          • K,V \u2014 Key\uff0cValue\uff0c\u4ee3\u8868Map\u7684\u952e\u503c\u5bf9<\/li>
          • N \u2014 Number\uff0c\u6570\u5b57<\/li>
          • T \u2014 Type\uff0c\u7c7b\u578b\uff0c\u5982String\uff0cInteger\u7b49\u7b49<\/li><\/ul>\n\n\n\n
            \u5982\u679c\u8fd9\u4e9b\u8fd8\u4e0d\u591f\u7528\uff0c\u90a3\u5c31\u81ea\u5df1\u968f\u4fbf\u53d6\u5427\uff0c\u53cd\u6b6326\u4e2a\u82f1\u6587\u5b57\u6bcd\u5462\u3002<\/p>\n\n\n\n
            \u518d\u91cd\u590d\u4e00\u904d\uff0c\u4f7f\u7528\u54ea\u4e2a\u5b57\u6bcd\u662f\u6ca1\u6709\u7279\u5b9a\u610f\u4e49\u7684\uff01\u53ea\u662f\u4e3a\u4e86\u63d0\u9ad8\u53ef\u8bfb\u6027\uff01\uff01\uff01<\/p>\n\n\n\n
            3\u3001\u6cdb\u578b\u63a5\u53e3\u5b9a\u4e49\u53ca\u4f7f\u7528<\/strong><\/p>\n\n\n\n
            \n\n\n\n
            \u5728\u63a5\u53e3\u4e0a\u5b9a\u4e49\u6cdb\u578b\u4e0e\u5728\u7c7b\u4e2d\u5b9a\u4e49\u6cdb\u578b\u662f\u4e00\u6837\u7684\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n
            interface Info<T>{        \/\/ \u5728\u63a5\u53e3\u4e0a\u5b9a\u4e49\u6cdb\u578b    \n    public T getVar() ; \/\/ \u5b9a\u4e49\u62bd\u8c61\u65b9\u6cd5\uff0c\u62bd\u8c61\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u5c31\u662f\u6cdb\u578b\u7c7b\u578b    \n    public void setVar(T x);  \n}    <\/pre>\n\n\n\n
            \u4e0e\u6cdb\u578b\u7c7b\u7684\u5b9a\u4e49\u4e00\u6837\uff0c\u4e5f\u662f\u5728\u63a5\u53e3\u540d\u540e\u52a0\u5c16\u62ec\u53f7\uff1b<\/p>\n\n\n\n
            3.1 \u4f7f\u7528\u65b9\u6cd5\u4e00\uff1a\u975e\u6cdb\u578b\u7c7b<\/strong><\/p>\n\n\n\n
            \u4f46\u662f\u5728\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u5c31\u51fa\u73b0\u95ee\u9898\u4e86\uff0c\u6211\u4eec\u5148\u770b\u770b\u4e0b\u9762\u8fd9\u4e2a\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
            class InfoImpl implements Info<String>{   \/\/ \u5b9a\u4e49\u6cdb\u578b\u63a5\u53e3\u7684\u5b50\u7c7b  \n    private String var ;                \/\/ \u5b9a\u4e49\u5c5e\u6027  \n    public InfoImpl(String var){        \/\/ \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u8bbe\u7f6e\u5c5e\u6027\u5185\u5bb9  \n        this.setVar(var) ;  \n    }  \n    @Override  \n    public void setVar(String var){  \n        this.var = var ;  \n    }  \n    @Override  \n    public String getVar(){  \n        return this.var ;  \n    }  \n}  \n  \npublic class GenericsDemo24{  \n    public  void main(String arsg[]){  \n        InfoImpl i = new InfoImpl(\"harvic\");  \n        System.out.println(i.getVar()) ;  \n    }  \n};  <\/pre>\n\n\n\n
            \u9996\u5148\uff0c\u5148\u770bInfoImpl\u7684\u5b9a\u4e49<\/p>\n\n\n\n
            class InfoImpl implements Info<String>{     \n \u2026\u2026\u2026\u2026  \n}  <\/pre>\n\n\n\n
            \u8981\u6e05\u695a\u7684\u4e00\u70b9\u662fInfoImpl\u4e0d\u662f\u4e00\u4e2a\u6cdb\u578b\u7c7b\uff01\u56e0\u4e3a\u4ed6\u7c7b\u540d\u540e\u6ca1\u6709<T>\uff01<\/p>\n\n\n\n
            \u7136\u540e\u5728\u5728\u8fd9\u91cc\u6211\u4eec\u5c06Info<String>\u4e2d\u7684\u6cdb\u578b\u53d8\u91cfT\u5b9a\u4e49\u586b\u5145\u4e3a\u4e86String\u7c7b\u578b\u3002\u6240\u4ee5\u5728\u91cd\u5199\u65f6setVar\uff08\uff09\u548cgetVar\uff08\uff09\u65f6\uff0cIDE\u4f1a\u4e5f\u6211\u4eec\u76f4\u63a5\u751f\u6210String\u7c7b\u578b\u7684\u91cd\u5199\u51fd\u6570\u3002<\/p>\n\n\n\n
            \u6700\u540e\u5728\u4f7f\u7528\u65f6,\u6ca1\u4ec0\u4e48\u96be\u5ea6\uff0c\u4f20\u8fdb\u53bbString\u7c7b\u578b\u7684\u5b57\u7b26\u4e32\u6765\u6784\u9020InfoImpl\u5b9e\u4f8b\uff0c\u7136\u540e\u8c03\u7528\u5b83\u7684\u51fd\u6570\u5373\u53ef\u3002<\/p>\n\n\n\n
            public class GenericsDemo24{  \n    public  void main(String arsg[]){  \n        InfoImpl i = new InfoImpl(\"harvic\");  \n        System.out.println(i.getVar()) ;  \n    }  \n};  <\/pre>\n\n\n\n
            3.2 \u4f7f\u7528\u65b9\u6cd5\u4e8c\uff1a\u6cdb\u578b\u7c7b<\/strong><\/p>\n\n\n\n
            \u5728\u65b9\u6cd5\u4e00\u4e2d\uff0c\u6211\u4eec\u5728\u7c7b\u4e2d\u76f4\u63a5\u628aInfo\u63a5\u53e3\u7ed9\u586b\u5145\u597d\u4e86\uff0c\u4f46\u6211\u4eec\u7684\u7c7b\uff0c\u662f\u53ef\u4ee5\u6784\u9020\u6210\u6cdb\u578b\u7c7b\u7684\uff0c\u90a3\u6211\u4eec\u5229\u7528\u6cdb\u578b\u7c7b\u6765\u6784\u9020\u586b\u5145\u6cdb\u578b\u63a5\u53e3\u4f1a\u662f\u600e\u6837\u5462\uff1f<\/p>\n\n\n\n
            interface Info<T>{        \/\/ \u5728\u63a5\u53e3\u4e0a\u5b9a\u4e49\u6cdb\u578b  \n    public T getVar() ; \/\/ \u5b9a\u4e49\u62bd\u8c61\u65b9\u6cd5\uff0c\u62bd\u8c61\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u5c31\u662f\u6cdb\u578b\u7c7b\u578b  \n    public void setVar(T var);  \n}  \nclass InfoImpl<T> implements Info<T>{   \/\/ \u5b9a\u4e49\u6cdb\u578b\u63a5\u53e3\u7684\u5b50\u7c7b  \n    private T var ;             \/\/ \u5b9a\u4e49\u5c5e\u6027  \n    public InfoImpl(T var){     \/\/ \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u8bbe\u7f6e\u5c5e\u6027\u5185\u5bb9  \n        this.setVar(var) ;    \n    }  \n    public void setVar(T var){  \n        this.var = var ;  \n    }  \n    public T getVar(){  \n        return this.var ;  \n    }  \n}  \npublic class GenericsDemo24{  \n    public static void main(String arsg[]){  \n        InfoImpl<String> i = new InfoImpl<String>(\"harvic\");  \n        System.out.println(i.getVar()) ;  \n    }  \n};  <\/pre>\n\n\n\n
            \u6700\u5173\u952e\u7684\u662f\u6784\u9020\u6cdb\u578b\u7c7b\u7684\u8fc7\u7a0b<\/p>\n\n\n\n
             class InfoImpl<T> implements Info<T>{   \/\/ \u5b9a\u4e49\u6cdb\u578b\u63a5\u53e3\u7684\u5b50\u7c7b  \n    private T var ;             \/\/ \u5b9a\u4e49\u5c5e\u6027  \n    public InfoImpl(T var){     \/\/ \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u8bbe\u7f6e\u5c5e\u6027\u5185\u5bb9  \n        this.setVar(var) ;    \n    }  \n    public void setVar(T var){  \n        this.var = var ;  \n    }  \n    public T getVar(){  \n        return this.var ;  \n    }  \n}  <\/pre>\n\n\n\n
            \u5728\u8fd9\u4e2a\u7c7b\u4e2d\uff0c\u6211\u4eec\u6784\u9020\u4e86\u4e00\u4e2a\u6cdb\u578b\u7c7bInfoImpl<T>\uff0c\u7136\u540e\u628a\u6cdb\u578b\u53d8\u91cfT\u4f20\u7ed9\u4e86Info<T>\uff0c\u8fd9\u8bf4\u660e\u63a5\u53e3\u548c\u6cdb\u578b\u7c7b\u4f7f\u7528\u7684\u90fd\u662f\u540c\u4e00\u4e2a\u6cdb\u578b\u53d8\u91cf\u3002<\/p>\n\n\n\n
            \u7136\u540e\u5728\u4f7f\u7528\u65f6\uff0c\u5c31\u662f\u6784\u9020\u4e00\u4e2a\u6cdb\u578b\u7c7b\u7684\u5b9e\u4f8b\u7684\u8fc7\u7a0b\uff0c\u4f7f\u7528\u8fc7\u7a0b\u4e5f\u4e0d\u53d8\u3002<\/p>\n\n\n\n
            public class GenericsDemo24{  \n    public static void main(String arsg[]){  \n        Info<String> i = new InfoImpl<String>(\"harvic\");  \n        System.out.println(i.getVar()) ;  \n    }  \n};  <\/pre>\n\n\n\n
            \u4f7f\u7528\u6cdb\u578b\u7c7b\u6765\u7ee7\u627f\u6cdb\u578b\u63a5\u53e3\u7684\u4f5c\u7528\u5c31\u662f\u8ba9\u7528\u6237\u6765\u5b9a\u4e49\u63a5\u53e3\u6240\u4f7f\u7528\u7684\u53d8\u91cf\u7c7b\u578b\uff0c\u800c\u4e0d\u662f\u50cf\u65b9\u6cd5\u4e00\u90a3\u6837\uff0c\u5728\u7c7b\u4e2d\u5199\u6b7b\u3002<\/p>\n\n\n\n
            \u90a3\u6211\u4eec\u7a0d\u5fae\u52a0\u6df1\u70b9\u96be\u5ea6\uff0c\u6784\u9020\u4e00\u4e2a\u591a\u4e2a\u6cdb\u578b\u53d8\u91cf\u7684\u7c7b\uff0c\u5e76\u7ee7\u627f\u81eaInfo\u63a5\u53e3\uff1a<\/p>\n\n\n\n
            class InfoImpl<T,K,U> implements Info<U>{   \/\/ \u5b9a\u4e49\u6cdb\u578b\u63a5\u53e3\u7684\u5b50\u7c7b  \n     private U var ;      \n     private T x;  \n     private K y;  \n     public InfoImpl(U var){        \/\/ \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u8bbe\u7f6e\u5c5e\u6027\u5185\u5bb9  \n         this.setVar(var) ;  \n     }  \n     public void setVar(U var){  \n         this.var = var ;  \n     }  \n     public U getVar(){  \n         return this.var ;  \n     }  \n }  <\/pre>\n\n\n\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5728\u6cdb\u578b\u7c7b\u4e2d\u5b9a\u4e49\u4e09\u4e2a\u6cdb\u578b\u53d8\u91cfT,K,U\u5e76\u4e14\u628a\u7b2c\u4e09\u4e2a\u6cdb\u578b\u53d8\u91cfU\u7528\u6765\u586b\u5145\u63a5\u53e3Info\u3002\u6240\u4ee5\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2dInfo\u6240\u4f7f\u7528\u7684\u7c7b\u578b\u5c31\u662f\u7531U\u6765\u51b3\u5b9a\u7684\u3002<\/p>\n\n\n\n
            \u4f7f\u7528\u65f6\u662f\u8fd9\u6837\u7684\uff1a\u6cdb\u578b\u7c7b\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u4e0d\u518d\u591a\u8bb2,\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n
            public class GenericsDemo24{  \n    public  void main(String arsg[]){  \n        InfoImpl<Integer,Double,String> i = new InfoImpl<Integer,Double,String>(\"harvic\");  \n        System.out.println(i.getVar()) ;  \n    }  \n}  <\/pre>\n\n\n\n
            4\u3001\u6cdb\u578b\u51fd\u6570\u5b9a\u4e49\u53ca\u4f7f\u7528<\/strong><\/p>\n\n\n\n
            \n\n\n\n
            \u4e0a\u9762\u6211\u4eec\u8bb2\u89e3\u4e86\u7c7b\u548c\u63a5\u53e3\u7684\u6cdb\u578b\u4f7f\u7528\uff0c\u4e0b\u9762\u6211\u4eec\u518d\u8bf4\u8bf4\uff0c\u600e\u4e48\u5355\u72ec\u5728\u4e00\u4e2a\u51fd\u6570\u91cc\u4f7f\u7528\u6cdb\u578b\u3002\u6bd4\u5982\u6211\u4eec\u5728\u65b0\u5efa\u4e00\u4e2a\u666e\u901a\u7684\u7c7bStaticFans\uff0c\u7136\u540e\u5728\u5176\u4e2d\u5b9a\u4e49\u4e86\u4e24\u4e2a\u6cdb\u578b\u51fd\u6570\uff1a<\/p>\n\n\n\n
            public class StaticFans {  \n    \/\/\u9759\u6001\u51fd\u6570  \n    public static  <T> void StaticMethod(T a){  \n        Log.d(\"harvic\",\"StaticMethod: \"+a.toString());  \n    }  \n    \/\/\u666e\u901a\u51fd\u6570  \n    public  <T> void OtherMethod(T a){  \n        Log.d(\"harvic\",\"OtherMethod: \"+a.toString());  \n    }  \n}  <\/pre>\n\n\n\n
            \u4e0a\u9762\u5206\u522b\u662f\u9759\u6001\u6cdb\u578b\u51fd\u6570\u548c\u5e38\u89c4\u6cdb\u578b\u51fd\u6570\u7684\u5b9a\u4e49\u65b9\u6cd5\uff0c\u4e0e\u4ee5\u5f80\u65b9\u6cd5\u7684\u552f\u4e00\u4e0d\u540c\u70b9\u5c31\u662f\u5728\u8fd4\u56de\u503c\u524d\u52a0\u4e0a<T>\u6765\u8868\u793a\u6cdb\u578b\u53d8\u91cf\u3002\u5176\u5b83\u6ca1\u4ec0\u4e48\u533a\u522b\u3002<\/p>\n\n\n\n
            \u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n\n\n\n
            \/\/\u9759\u6001\u65b9\u6cd5  \nStaticFans.StaticMethod(\"adfdsa\");\/\/\u4f7f\u7528\u65b9\u6cd5\u4e00  \nStaticFans.<String>StaticMethod(\"adfdsa\");\/\/\u4f7f\u7528\u65b9\u6cd5\u4e8c  \n  \n\/\/\u5e38\u89c4\u65b9\u6cd5  \nStaticFans staticFans = new StaticFans();  \nstaticFans.OtherMethod(new Integer(123));\/\/\u4f7f\u7528\u65b9\u6cd5\u4e00  \nstaticFans.<Integer>OtherMethod(new Integer(123));\/\/\u4f7f\u7528\u65b9\u6cd5\u4e8c <\/pre>\n\n\n\n
            \u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n
            \"\"<\/figure><\/div>\n\n\n\n
            \u9996\u5148\uff0c\u6211\u4eec\u770b\u9759\u6001\u6cdb\u578b\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
            StaticFans.StaticMethod(\"adfdsa\");\/\/\u4f7f\u7528\u65b9\u6cd5\u4e00  \nStaticFans.<String>StaticMethod(\"adfdsa\");\/\/\u4f7f\u7528\u65b9\u6cd5\u4e8c  <\/pre>\n\n\n\n
            \u4ece\u7ed3\u679c\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u4e24\u79cd\u65b9\u6cd5\u7684\u7ed3\u679c\u662f\u5b8c\u5168\u4e00\u6837\u7684\uff0c\u4f46\u4ed6\u4eec\u8fd8\u6709\u4e9b\u533a\u522b\u7684\uff0c\u533a\u522b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
            • \u65b9\u6cd5\u4e00\uff0c\u53ef\u4ee5\u50cf\u666e\u901a\u65b9\u6cd5\u4e00\u6837\uff0c\u76f4\u63a5\u4f20\u503c\uff0c\u4efb\u4f55\u503c\u90fd\u53ef\u4ee5\uff08\u4f46\u5fc5\u987b\u662f\u6d3e\u751f\u81eaObject\u7c7b\u7684\u7c7b\u578b\uff0c\u6bd4\u5982String,Integer\u7b49\uff09\uff0c\u51fd\u6570\u4f1a\u5728\u5185\u90e8\u6839\u636e\u4f20\u8fdb\u53bb\u7684\u53c2\u6570\u6765\u8bc6\u522b\u5f53\u524dT\u7684\u7c7b\u522b\u3002\u4f46\u5c3d\u91cf\u4e0d\u8981\u4f7f\u7528\u8fd9\u79cd\u9690\u5f0f\u7684\u4f20\u9012\u65b9\u5f0f\uff0c\u4ee3\u7801\u4e0d\u5229\u4e8e\u9605\u8bfb\u548c\u7ef4\u62a4\u3002\u56e0\u4e3a\u4ece\u5916\u89c2\u6839\u672c\u770b\u4e0d\u51fa\u6765\u4f60\u8c03\u7528\u7684\u662f\u4e00\u4e2a\u6cdb\u578b\u51fd\u6570\u3002<\/li><\/ul>\n\n\n\n
              • \u65b9\u6cd5\u4e8c\uff0c\u4e0e\u65b9\u6cd5\u4e00\u4e0d\u540c\u7684\u5730\u65b9\u5728\u4e8e\uff0c\u5728\u8c03\u7528\u65b9\u6cd5\u524d\u52a0\u4e86\u4e00\u4e2a<String>\u6765\u6307\u5b9a\u4f20\u7ed9<T>\u7684\u503c\uff0c\u5982\u679c\u52a0\u4e86\u8fd9\u4e2a<String>\u6765\u6307\u5b9a\u53c2\u6570\u7684\u503c\u7684\u8bdd\uff0c\u90a3StaticMethod\uff08\uff09\u51fd\u6570\u91cc\u6240\u6709\u7528\u5230\u7684T\u7c7b\u578b\u4e5f\u5c31\u662f\u5f3a\u5236\u6307\u5b9a\u4e86\u662fString\u7c7b\u578b\u3002\u8fd9\u662f\u6211\u4eec\u5efa\u8bae\u4f7f\u7528\u7684\u65b9\u5f0f\u3002<\/li><\/ul>\n\n\n\n
                \u540c\u6837\uff0c\u5e38\u89c4\u6cdb\u578b\u51fd\u6570\u7684\u4f7f\u7528\u4e5f\u6709\u8fd9\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
                StaticFans staticFans = new StaticFans();  \nstaticFans.OtherMethod(new Integer(123));\/\/\u4f7f\u7528\u65b9\u6cd5\u4e00  \nstaticFans.<Integer>OtherMethod(new Integer(123));\/\/\u4f7f\u7528\u65b9\u6cd5\u4e8c  <\/pre>\n\n\n\n
                \u53ef\u4ee5\u770b\u5230\uff0c\u4e0e\u5e73\u5e38\u4e00\u6837\uff0c\u5148\u521b\u5efa\u7c7b\u7684\u5b9e\u4f8b\uff0c\u7136\u540e\u8c03\u7528\u6cdb\u578b\u51fd\u6570\u3002
                \u65b9\u6cd5\u4e00\uff0c\u9690\u5f0f\u4f20\u9012\u4e86T\u7684\u7c7b\u578b\uff0c\u4e0e\u4e0a\u9762\u4e00\u6837\uff0c\u4e0d\u5efa\u8bae\u8fd9\u4e48\u505a\u3002
                \u65b9\u6cd5\u4e8c\uff0c\u663e\u793a\u5c06T\u8d4b\u503c\u4e3aInteger\u7c7b\u578b\uff0c\u8fd9\u6837OtherMethod\uff08T a\uff09\u4f20\u9012\u8fc7\u6765\u7684\u53c2\u6570\u5982\u679c\u4e0d\u662fInteger\u90a3\u4e48\u7f16\u8bd1\u5668\u5c31\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
                \u8fdb\u9636\uff1a\u8fd4\u56de\u503c\u4e2d\u5b58\u5728\u6cdb\u578b<\/strong><\/p>\n\n\n\n
                \u4e0a\u9762\u6211\u4eec\u7684\u51fd\u6570\u4e2d\uff0c\u8fd4\u56de\u503c\u90fd\u662fvoid\uff0c\u4f46\u73b0\u5b9e\u4e2d\u4e0d\u53ef\u80fd\u90fd\u662fvoid\uff0c\u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5c06\u6cdb\u578b\u53d8\u91cf\u8fd4\u56de\uff0c\u6bd4\u5982\u4e0b\u9762\u8fd9\u4e2a\u51fd\u6570\uff1a<\/p>\n\n\n\n
                public static <T> List<T> parseArray(String response,Class<T> object){  \n    List<T> modelList = JSON.parseArray(response, object);  \n    return modelList;  \n}  <\/pre>\n\n\n\n
                \u51fd\u6570\u8fd4\u56de\u503c\u662fList\u7c7b\u578b\u3002\u81f3\u4e8e\u4f20\u5165\u53c2\u6570Class object\u7684\u610f\u4e49\uff0c\u6211\u4eec\u4e0b\u9762\u4f1a\u8bb2\u3002\u8fd9\u91cc\u4e5f\u5c31\u662f\u60f3\u901a\u8fc7\u8fd9\u4e2a\u4f8b\u5b50\u6765\u544a\u8bc9\u5927\u5bb6\uff0c\u6cdb\u578b\u53d8\u91cf\u5176\u5b9e\u8ddfString,Integer\uff0cDouble\u7b49\u7b49\u7684\u7c7b\u7684\u4f7f\u7528\u4e0a\u6ca1\u6709\u4efb\u4f55\u533a\u522b\uff0cT\u53ea\u662f\u4e00\u4e2a\u7b26\u53f7\uff0c\u53ef\u4ee5\u4ee3\u8868String,Integer\uff0cDouble\u2026\u2026\u8fd9\u4e9b\u7c7b\u7684\u7b26\u53f7\uff0c\u5728\u6cdb\u578b\u51fd\u6570\u4f7f\u7528\u65f6\uff0c\u76f4\u63a5\u628aT\u770b\u5230String,Integer\uff0cDouble\u2026\u2026\u4e2d\u7684\u4efb\u4e00\u4e2a\u6765\u5199\u4ee3\u7801\u5c31\u53ef\u4ee5\u4e86\u3002\u552f\u4e00\u4e0d\u540c\u7684\u662f\uff0c\u8981\u5728\u51fd\u6570\u5b9a\u4e49\u7684\u4e2d\u5728\u8fd4\u56de\u503c\u524d\u52a0\u4e0a\u6807\u8bc6\u6cdb\u578b\uff1b<\/p>\n\n\n\n
                5\u3001\u5176\u5b83\u7528\u6cd5:Class<T>\u7c7b\u4f20\u9012\u53ca\u6cdb\u578b\u6570\u7ec4<\/strong><\/p>\n\n\n\n
                \n\n\n\n
                5.1 \u3001\u4f7f\u7528Class<T>\u4f20\u9012\u6cdb\u578b\u7c7bClass\u5bf9\u8c61<\/strong><\/p>\n\n\n\n
                \u6709\u65f6\uff0c\u6211\u4eec\u4f1a\u9047\u5230\u4e00\u4e2a\u60c5\u51b5\uff0c\u6bd4\u5982\uff0c\u6211\u4eec\u5728\u4f7f\u7528JSON\u89e3\u6790\u5b57\u7b26\u4e32\u7684\u65f6\u5019\uff0c\u4ee3\u7801\u4e00\u822c\u662f\u8fd9\u6837\u7684<\/p>\n\n\n\n
                public static List<SuccessModel> parseArray(String response){  \n    List<SuccessModel> modelList = JSON.parseArray(response, SuccessModel.class);  \n    return modelList;  \n}  <\/pre>\n\n\n\n
                \u5176\u4e2dSuccessModel\u662f\u81ea\u5b9a\u4e49\u7684\u89e3\u6790\u7c7b\uff0c\u4ee3\u7801\u5982\u4e0b\uff0c\u5176\u5b9e\u5927\u5bb6\u4e0d\u7528\u7ba1SuccessModel\u7684\u5b9a\u4e49\uff0c\u53ea\u8003\u8651\u4e0a\u9762\u7684\u90a3\u6bb5\u4ee3\u7801\u5c31\u884c\u4e86\u3002\u5199\u51fa\u6765SuccessModel\u7684\u4ee3\u7801\uff0c\u53ea\u662f\u4e0d\u60f3\u5927\u5bb6\u611f\u5230\u8ff7\u60d1\uff0c\u5176\u5b9e\uff0c\u8fd9\u91cc\u53ea\u662ffastJson\u7684\u57fa\u672c\u7528\u6cd5\u800c\u5df2\u3002<\/p>\n\n\n\n
                \u8fd9\u6bb5\u4ee3\u7801\u7684\u610f\u4e49\u5c31\u662f\u6839\u636eSuccessModel\u89e3\u6790\u51faList<SuccessModel>\u7684\u6570\u7ec4\u3002<\/p>\n\n\n\n
                public class SuccessModel {  \n    private boolean success;  \n      \n    public boolean isSuccess() {  \n        return success;  \n    }  \n  \n    public void setSuccess(boolean success) {  \n        this.success = success;  \n    }  \n}   <\/pre>\n\n\n\n
                \u90a3\u73b0\u5728\uff0c\u6211\u4eec\u628a\u4e0b\u9762\u8fd9\u53e5\u7ec4\u88c5\u6210\u4e00\u4e2a\u6cdb\u578b\u51fd\u6570\u8981\u600e\u4e48\u6765\u505a\u5462?<\/p>\n\n\n\n
                public static List<SuccessModel> parseArray(String response){  \n    List<SuccessModel> modelList = JSON.parseArray(response, SuccessModel.class);  \n    return modelList;  \n}  <\/pre>\n\n\n\n
                \u6ce8\u610f\u5230\uff0c\u6211\u4eec\u7528\u7684Class<T> object\u6765\u4f20\u9012\u7c7b\u7684class\u5bf9\u8c61\uff0c\u5373\u6211\u4eec\u4e0a\u9762\u63d0\u5230\u7684SuccessModel.class\u3002<\/p>\n\n\n\n
                \u8fd9\u662f\u56e0\u4e3aClass<T>\u4e5f\u662f\u4e00\u6cdb\u578b\uff0c\u5b83\u662f\u4f20\u6765\u7528\u6765\u88c5\u8f7d\u7c7b\u7684class\u5bf9\u8c61\u7684\uff0c\u5b83\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n
                public final class Class<T> implements Serializable {  \n    \u2026\u2026\u2026\u2026  \n}  <\/pre>\n\n\n\n
                \u901a\u8fc7Class<T>\u6765\u52a0\u8f7d\u6cdb\u578b\u7684Class\u5bf9\u8c61\u7684\u95ee\u9898\u5c31\u8bb2\u5b8c\u4e86\uff0c\u4e0b\u9762\u6765\u770b\u770b\u6cdb\u578b\u6570\u7ec4\u7684\u4f7f\u7528\u65b9\u6cd5\u5427\u3002<\/p>\n\n\n\n
                5.2 \u5b9a\u4e49\u6cdb\u578b\u6570\u7ec4<\/strong><\/p>\n\n\n\n
                \u5728\u5199\u7a0b\u5e8f\u65f6\uff0c\u5927\u5bb6\u53ef\u80fd\u4f1a\u9047\u5230\u7c7b\u4f3cString[] list = new String[8];\u7684\u9700\u6c42\uff0c\u8fd9\u91cc\u53ef\u4ee5\u5b9a\u4e49String\u6570\u7ec4\uff0c\u5f53\u7136\u6211\u4eec\u4e5f\u53ef\u4ee5\u5b9a\u4e49\u6cdb\u578b\u6570\u7ec4\uff0c\u6cdb\u578b\u6570\u7ec4\u7684\u5b9a\u4e49\u65b9\u6cd5\u4e3a T[]\uff0c\u4e0eString[]\u662f\u4e00\u81f4\u7684\uff0c\u4e0b\u9762\u770b\u770b\u7528\u6cd5\uff1a<\/p>\n\n\n\n
                \/\/\u5b9a\u4e49  \npublic static <T> T[] fun1(T...arg){  \/\/ \u63a5\u6536\u53ef\u53d8\u53c2\u6570    \n       return arg ;            \/\/ \u8fd4\u56de\u6cdb\u578b\u6570\u7ec4    \n}    \n\/\/\u4f7f\u7528  \npublic static void main(String args[]){    \n       Integer i[] = fun1(1,2,3,4,5,6) ;  \n       Integer[] result = fun1(i) ;  \n}    <\/pre>\n\n\n\n
                \u6211\u4eec\u5148\u770b\u770b \u5b9a\u4e49\u65f6\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n
                public static <T> T[] fun1(T...arg){  \/\/ \u63a5\u6536\u53ef\u53d8\u53c2\u6570    \n       return arg ;            \/\/ \u8fd4\u56de\u6cdb\u578b\u6570\u7ec4    \n}    <\/pre>\n\n\n\n
                \u9996\u5148\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9759\u6001\u51fd\u6570\uff0c\u7136\u540e\u5b9a\u4e49\u8fd4\u56de\u503c\u4e3aT[]\uff0c\u53c2\u6570\u4e3a\u63a5\u6536\u7684T\u7c7b\u578b\u7684\u53ef\u53d8\u957f\u53c2\u6570\u3002\u5982\u679c\u6709\u540c\u5b66\u5bf9T…arg\u7684\u7528\u6cd5\u4e0d\u4e86\u89e3\uff0c\u53ef\u4ee5\u53bb\u627e\u4e0bJAVA \u53ef\u53d8\u957f\u53c2\u6570\u65b9\u9762\u7684\u77e5\u8bc6\u3002<\/p>\n\n\n\n
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