java回调,js回调

public interface CallBack
{
    
    //public String doThis2(String name,String password);
    
    public void doThis(String...strings);
}

 

public class HellBack
{
   /* public String hechuan(String name,String password,CallBack callBack) {
        return callBack.doThis2(name, password);
    }
    
    public static void main(String[] args)
    {
        new HellBack().hechuan("he","chuan",new CallBack() {
            public String doThis2(String name, String password)
            {
                System.out.println(name+password);
                return name+password;
            }

        });
    }*/
    
    public void qqai(String userName,String password,String age,String clName,CallBack callBack) {
        callBack.doThis(userName,password,age,clName);
    }
    
    public void doT() {
        String userName = "nihao";
        String password = "howareyou";
        String age = "20";
        String clName = "classOne";
        
        qqai(userName, password, age, clName, new CallBack() {
            public void doThis(String... strings)
            {
                if(strings[0].equals("nihao") && strings[1].equals("howareyous")) {
                    System.out.println("age="+strings[2]+",clName="+strings[3]);
                }else {
                    System.out.println("age=30clName=ClassTow");
                }
                
            }
        });
    }
    
    public static void main(String[] args)
    {
        HellBack hellBack = new HellBack();
        hellBack.doT();
    }

 最有名的一句话就是：DO NOT CALL ME，I WILL CALL YOU！

 

回调的好处就是把方法定义好，让具体的情况下具体处理，这样灵活多变，使程序更加灵活。