泛型接口的实现方式一：在子类的定义上声明泛型类型

/*泛型接口的实现方式一：在子类的定义上声明泛型类型*/

interface Info6<T>{

public T getVar();

}

class Infoimpl<T> implements Info6<T>{ //在子类的定义上声明泛型类型

private T var;

public Infoimpl(T var){

this.setVar(var);

}

public void setVar(T var){

this.var = var;

}

public T getVar(){

return this.var;

}

}

public class GenericsInterfaceDemo {

public static void main(String[] args) {

// TODO Auto-generated method stub

Info6<String> i = null;

i = new Infoimpl<String>("张三");

System.out.println("内容："+i.getVar());

}

}