【java学习】GUI组件--CheckBox
学了几天的CheckBox，终于学会了一些，哈哈，进度是慢了一点，不过总算是学会了checkBox的一点用法。package checkboxTest;/**程序：让你了解复选框 ** 通过复选框的选择，字体可以变为常规、粗体、斜体 **/import javax.swing.*;import java.awt.*;import java.awt.event.*;public class CheckboxTest {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubCheckboxFrame checkbox=new CheckboxFrame();checkbox.setTitle("CheckboxTest");checkbox.setDefaultCloseOperation(checkbox.EXIT_ON_CLOSE);checkbox.setVisible(true);}}//窗口类class CheckboxFrame extends JFrame{//构造方法 public CheckboxFrame(){this.setLocation(300, 200);this.setSize(300, 200);CheckboxPanel panel=new CheckboxPanel();this.add(panel);}}//面板类class CheckboxPanel extends JPanel{public final JLabel words; public final JCheckBox heiti; //黑体按钮public final JCheckBox xieti; //斜体按钮private static final int FONTSIZE=12;public ActionListener check;//创建监听对象//构造方法publicCheckboxPanel(){this.setSize(250, 140);//this.setLayout(new BorderLayout());words =new JLabel("看我变魔术给你看看！"); words.setFont(new Font("Serif",Font.PLAIN,FONTSIZE));heiti=new JCheckBox("黑体");xieti=new JCheckBox("斜体");//注册监听 check=new ActionListener()//ActionListener 为监听接口 {public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubint mode=0;if(heiti.isSelected()==true){mode+=Font.BOLD;}if(xieti.isSelected()==true){mode+=Font.ITALIC;}words.setFont(new Font("serif",mode,FONTSIZE));}};heiti.addActionListener(check);xieti.addActionListener(check);//将组件添加到面板中去this.add(words);this.add(heiti);this.add(xieti);}}
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