GUI编程-三种布局和练习

流式布局：

package com.zwxxGUI.lemsson01;

import java.awt.*;

public class TextFlowLayout {
    
    
    public static void main(String[] args) {
    
    
        Frame frame = new Frame();

        //组件-按钮
        Button button1 = new Button("button1");
        Button button2 = new Button("button2");
        Button button3 = new Button("button3");

        //设置为流式布局
        //frame.setLayout(new FlowLayout());        默认靠左
        //frame.setLayout(new FlowLayout(FlowLayout.LEFT)); //靠左
        //frame.setLayout(new FlowLayout(FlowLayout.RIGHT));//靠右
        frame.setLayout(new FlowLayout(FlowLayout.CENTER)); //居中

        frame.setSize(200,200);

        //把按钮添加上去
        frame.add(button1);
        frame.add(button2);
        frame.add(button3);

        frame.setVisible(true);
    }
}

东南西北中布局:

package com.zwxxGUI.lemsson01;

import java.awt.*;

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

        //东西南北中布局
        Frame frame = new Frame("TestBorderLayout");

        Button east = new Button("East");
        Button west = new Button("West");
        Button south = new Button("South");
        Button north = new Button("North");
        Button center = new Button("Center");

        frame.add(east,BorderLayout.EAST);
        frame.add(west,BorderLayout.WEST);
        frame.add(south,BorderLayout.SOUTH);
        frame.add(north,BorderLayout.NORTH);
        frame.add(center,BorderLayout.CENTER);

        frame.setSize(200,200);
        frame.setVisible(true);

    }
}

列表布局：

package com.zwxxGUI.lemsson01;

import java.awt.*;

public class TestGridLayout {
    
    
    public static void main(String[] args) {
    
    
        //列表布局
        Frame frame = new Frame("TestGridLayout");

        Button btn1 = new Button("btn1");
        Button btn2 = new Button("btn2");
        Button btn3 = new Button("btn3");
        Button btn4 = new Button("btn4");
        Button btn5 = new Button("btn5");
        Button btn6 = new Button("btn6");

        frame.setLayout(new GridLayout(3,2));

        frame.add(btn1);
        frame.add(btn2);
        frame.add(btn3);
        frame.add(btn4);
        frame.add(btn5);
        frame.add(btn6);

        frame.pack();   //Java函数
        frame.setVisible(true);
    }
}

实现一些布局：

package com.zwxxGUI.lemsson01;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class homework {
    
    
    public static void main(String[] args) {
    
    
    	//平分的一般都是列表布局
        Frame frame = new Frame();
        frame.setVisible(true);
        frame.setSize(400,500);
        frame.setLocation(500,500);
        frame.setLayout(new GridLayout(2,1));


        Panel panel1 = new Panel(new BorderLayout());
        Panel panel2 = new Panel(new BorderLayout());
        Panel panel3 = new Panel(new GridLayout(2,1));
        Panel panel4 = new Panel(new GridLayout(2,2));



//        panel1.setBackground(Color.cyan);
//        panel2.setBackground(Color.RED);


        panel1.add(new Button("button1"),BorderLayout.WEST);
        panel1.add(new Button("button4"),BorderLayout.EAST);
        panel3.add(new Button("button2"));
        panel3.add(new Button("button3"));

        panel1.add(panel3,BorderLayout.CENTER);


        panel2.add(new Button("button5"),BorderLayout.WEST);
        panel2.add(new Button("button10"),BorderLayout.EAST);
//        panel4.add(new Button("button6"));
//        panel4.add(new Button("button7"));
//        panel4.add(new Button("button8"));
//        panel4.add(new Button("button9"));
        for (int i = 0; i < 4; i++) {
    
    
            panel4.add(new Button("button"+(i+6)));
        }

        panel2.add(panel4,BorderLayout.CENTER);

        frame.add(panel1);
        frame.add(panel2);

        //监听时间，监听窗口关闭事件 System.exit（0）
        //适配器模式：  Listnenr:监听器  Adapter:适配
        frame.addWindowListener(new WindowAdapter() {
    
    
            //窗口点击关闭的时候需要做的事情
            @Override
            public void windowClosing(WindowEvent e) {
    
    
                //结束程序
                System.exit(0);
            }
        });
    }
}

1、先用列表分成上下两部分
2、用东南西北中布局 分别放置西 中 东 的面板
3、面板内使用列表布局
样例：