java 泛型复习

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泛型类：

public class FanXingLeiDemo<T> {//这里是泛型，可以传任意的参数private T obj;public T getObj() {return obj;}public void setObj(T obj) {this.obj = obj;}}实现：public class FanXingMain {public static void main(String[] args) {FanXingLeiDemo<String> fxd = new FanXingLeiDemo<String>();fxd.setObj("hahaha");System.out.println(fxd.getObj());}}

泛型方法：

public class FanXingMethod {public <T> void show(T t){System.out.println(t);}}实现：public class FangXingMethodMain {public static void main(String[] args) {FanXingMethod fxm = new FanXingMethod();fxm.show(100);fxm.show("shshh");fxm.show(true);}}

泛型接口：

public interface Inter<T> {public abstract void show(T t);}实现接口：public class InterImpl<T> implements Inter<T> {@Overridepublic void show(T t) {// TODO 自动生成的方法存根System.out.println(t);}}实例化：public class InterMain {public static void main(String[] args) {Inter<String> in = new InterImpl<String>();in.show("hahah");}}

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