java swing 界面设计-复选框

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/** 
 * @author  Amy  E-mail:[email protected]
 * @date    创建时间：2017年10月9日 下午6:34:49
 * @version 1.0   
 */
public class JCheckBoxDemo {
    public static void main(String[] args) {
        CheckFrame cf=new CheckFrame();
        cf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        cf.setVisible(true);
        cf.setTitle("CheckBox");
        }
        }

        class CheckFrame extends JFrame{
        private static final long serialVersionUID = 1L;
        private static final int WIDTH=400;
        private static final int HEIGHT=300;
        private static int mode=0;

        public CheckFrame(){
        setSize(WIDTH,HEIGHT);
        JPanel boldPanel=new JPanel();
        JCheckBox bold=new JCheckBox("Bold");
        JCheckBox italic=new JCheckBox("Italic");
        boldPanel.add(bold,BorderLayout.CENTER);
        boldPanel.add(italic,BorderLayout.CENTER);
        bold.setSelected(false);

        JPanel labelPanel=new JPanel();
        JLabel label=new JLabel("Wasting time is equal to wasting your life");
        add(label,BorderLayout.CENTER);
        add(boldPanel,BorderLayout.SOUTH);


        bold.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if(bold.isSelected()) mode+=Font.BOLD;
                label.setFont(new Font("Serif",mode,14)); 
            }
        });
        italic.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                if(italic.isSelected()) mode+=Font.BOLD;
                label.setFont(new Font("Serif",mode,14)); 
            }
        });


        }
        }

运行结果图