java组件及事件处理（5）--滚动面板

    java组件及事件处理（5）---加入滚动面板

package First;

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

//在JPanel 中 加入 滚动面板
public class Five extends JFrame
{
    
    
	JButton jb1;
	JButton jb2;
	JButton jb3;
	JButton jb4;
	
	JPanel jp1;
	JPanel jp2;
	
	JTextArea jta;
	JScrollPane jsp;
	
	public Five(String s)
	{
    
    
		super(s);
		
		setLayout(new FlowLayout());
		
		setBounds(400, 400, 400, 400);
		
		Container conn = getContentPane();
		conn.setBackground(Color.cyan);
		
		jb1 = new JButton("PINK");
		jb2 = new JButton("YELLOW");
		jb3 = new JButton("BLUE");
		jb4 = new JButton("RED");
		
		jp1 = new JPanel();
		jp2 = new JPanel();
		
		jp1.setBackground(Color.blue);
		jp2.setBackground(Color.black);
		
		jp1.add(jb1);
		jp1.add(jb2);
		jp2.add(jb3);
		jp2.add(jb4);
		
		add(jp1);
		add(jp2);
		
		jta = new JTextArea(5,10);
		jsp = new JScrollPane(jta,jsp.VERTICAL_SCROLLBAR_ALWAYS,
				jsp.HORIZONTAL_SCROLLBAR_ALWAYS);
		
		add(jsp);
		
		setVisible(true);
		
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	public static void main(String[] args)
	{
    
    
		Five a = new Five("滚动面板");
	}
}