将 JPanel 添加到 JFrame

本文介绍了将 JPanel 添加到 JFrame的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个将 JPanel 添加到 JFrame 的程序:

I have a program in which a JPanel is added to a JFrame:

public class Test{ Test2 test = new Test2(); JFrame frame = new JFrame(); Test(){ ... frame.setLayout(new BorderLayout()); frame.add(test, BorderLayout.CENTER); ... } //main ... } public class Test2{ JPanel test2 = new JPanel(); Test2(){ ... } }

我收到一条错误消息，要求我将面板"类型更改为组件".我要修复这个错误吗?它要我做:Component panel = new Component();

I get an error asking me to change type of 'panel' to 'component'. I do I fix this error? It wants me to do: Component panel = new Component();

推荐答案

public class Test{ Test2 test = new Test2(); JFrame frame = new JFrame(); Test(){ ... frame.setLayout(new BorderLayout()); frame.add(test, BorderLayout.CENTER); ... } //main ... } //public class Test2{ public class Test2 extends JPanel { //JPanel test2 = new JPanel(); Test2(){ ... }