学习窗口的三种布局

//设置为流式布局
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class TestFlowLayout {
    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");

        //frame.setLayout(new FlowLayout(FlowLayout.RIGHT));
        frame.setLayout(new FlowLayout(FlowLayout.LEFT));

        frame.setSize(200,300);

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



        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

 

 =======================================================================================

//东西南北中布局
public class TestBorderLayout {
    public static void main(String[] args) {
        Frame frame = new Frame("东西南北中布局");

        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(400,500);
        frame.setVisible(true);


        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

 

 ============================================================================================

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

        Button bt1 = new Button("bt1");
        Button bt2 = new Button("bt2");
        Button bt3 = new Button("bt3");
        Button bt4 = new Button("bt4");
        Button bt5 = new Button("bt5");
        Button bt6 = new Button("bt6");

        frame.setLayout(new GridLayout(2,3));
        frame.add(bt1);
        frame.add(bt2);
        frame.add(bt3);
        frame.add(bt4);
        frame.add(bt5);
        frame.add(bt6);

        frame.pack();
        frame.setVisible(true);

        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

    }
}