集合框架——定义泛型接口

//泛型定义在接口上。interface Inter<T>{void show(T t);}/*class InterImpl implements Inter<String>{public void show(String t){System.out.println("show :"+t);}}*/class InterImpl<T> implements Inter<T>{public void show(T t){System.out.println("show :"+t);}}class GenericDemo5 {public static void main(String[] args) {InterImpl<Integer> i = new InterImpl<Integer>();i.show(4);//InterImpl i = new InterImpl();//i.show("haha");}}