testjpanel.java

Java讲义与实例

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class testJPanel{
    public static void main(String[] s){
        JPanel mainPane;
        mainPane=new JPanel();
        if (COLORS){
            mainPane.setBackground(Color.red);
            }
        mainPane.setLayout(new GridLayout(2,1,5,5));
        mainPane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        mainPane.add(metricPanel);
        mainPane.add(usaPanel);
        JFrame f=new JFrame("Converter");
        f.setContentPane(converter.mainPane);
        metricPanel=new ConversionPanel;
        }
    }
}