localcolor.java

这是我们写的考试系统！！java编写的！！不是很大！！希望有用

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class LocalColor{
	
	public static void main(String[] args){
		
		final JFrame frame=new JFrame("LocalColor");
		final Container content=frame.getContentPane();
		
		content.setLayout(new GridBagLayout());
		JButton button=new JButton("Change color...");
		content.add(button);
		
		button.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				Color c=JColorChooser.showDialog(frame,"Choose a color",content.getBackground());
				if(c!=null)  content.setBackground(c);
				
			}
			
		});
		
		frame.setSize(300,300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
		
	}
	
}