java 匿名内部类


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public class Demo {
public static void main(String[] args) {


use(new Add(){public void addnum(int x,int y){System.out.println(x+y);}},
300,500);


}

public static void use(Add add,int x,int y) {
add.addnum(x, y);
}
}

interface Add{
public void addnum(int x,int y);
}