缁ф壙涓殑this

Posted 2020-12-21

鏍囩锛?a href='http://www.mamicode.com/so/1/%e6%96%b9%e6%b3%95' title='鏂规硶'>鏂规硶   rgs   str   err   nbsp   ide   out   inf   protect   

鐖剁被锛?/p>

public class Parent  {
    //鐪嬭繖閲岀殑this鎸囩殑鏄粈涔?/span>
    public Parent() {
        this.say();
    }
    
    protected void say() {
        System.out.println("father");
    }
}

瀛愮被锛?/p>

public class Sun extends Parent{
    public Sun() {
    }

    @Override
    protected void say() {
        System.out.println("sun");
    }
}

娴嬭瘯瀹炰緥鍖栧瓙绫绘椂鍊欙紝鐖剁被涓殑this鎸囩殑鏄粈涔堬細

public class TestExtends {
    public static void main(String[] args) {
        Sun sun = new Sun();
    }
}

debug:

 

 

 杩欓噷鐨則his鏄綋鍓嶅璞★紝涔熷氨鏄痵un锛屾墍浠ユ墽琛宻un涓殑say鏂规硶銆?/p>

缁撴灉锛?/p>