lambda

package demo02;
public class TestLambda1 {
//实现类换为静态内部类
//2.实现类
static class Like2 implements IlIKE{
@Override
public void lambda() {
System.out.println(" I like lambda2");
}
}
public static void main(String[] args) {
IlIKE ilIKE=new Like();
ilIKE.lambda();
new Like2().lambda();
//局部内部类
class Like3 implements IlIKE{

        @Override
        public void lambda() {
            System.out.println(" I like lambda3");
        }
    }
    new Like3().lambda();
    //匿名内部类
    ilIKE = new IlIKE() {
        @Override
        public void lambda() {
            System.out.println("I like lambda4");
        }
    };
    ilIKE.lambda();
    //lambda简化
    ilIKE = ()->{
            System.out.println("I like lambda5");
    };
    ilIKE.lambda();
}

}
//1.定义函数式接口
interface IlIKE{
void lambda();
}
//2.实现类
class Like implements IlIKE{
@Override
public void lambda() {
System.out.println(" I like lambda");
}
}