技術標籤：Java筆記javaswing

1. 新增元件時，須要指定區域，否則會預設新增到CENTER區。
2. 同一區域的元件會互相覆蓋

import java.awt.*;

import javax.swing.*;

public class Demo extends JFrame{
	public Demo() {
		setBounds(100, 100, 350, 200);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		Container c = getContentPane();
		c.setLayout(new BorderLayout())
 
;//設定為邊界佈局 
		JButton b1 = new JButton("中"),
				b2 = new JButton("東"),
				b3 = new JButton("西"),
				b4 = new JButton("南"),
				b5 = new JButton("北");
		
		c.add(b1, BorderLayout.CENTER);//中部新增按鈕
		c.add(b2, BorderLayout.EAST);//東部新增按鈕
		c.add(b3, BorderLayout.
 
WEST);//西部新增按鈕
		c.add(b4, BorderLayout.SOUTH);//南中部新增按鈕
		c.add(b5, BorderLayout.NORTH);//北部新增按鈕

		setVisible(true);
	}
	
	public static void main(String[] args) {
		new Demo();
	}

}

import java.awt.*;

import javax.swing.*;

public class Demo extends JFrame{
	public Demo() {
		setBounds(100, 100, 350, 200)
 
;
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		Container c = getContentPane();
		c.setLayout(new BorderLayout());//設定為邊界佈局 
		JButton b1 = new JButton("中"),
				b2 = new JButton("東"),
				b3 = new JButton("西"),
				b4 = new JButton("南"),
				b5 = new JButton("北");
		
		c.add(b1, BorderLayout.CENTER);//中部新增按鈕
		c.add(b2, BorderLayout.EAST);//東部新增按鈕
		c.add(b3, BorderLayout.WEST);//西部新增按鈕
		c.add(b4, BorderLayout.SOUTH);//南中部新增按鈕
		c.add(b5, BorderLayout.NORTH);//北部新增按鈕

		c.add(new JButton("覆蓋"), BorderLayout.NORTH);
		setVisible(true);
	}
	
	public static void main(String[] args) {
		new Demo();
	}

}