第六次作业窗口JFrame的设计

最新推荐文章于 2023-07-14 12:42:54 发布

原创最新推荐文章于 2023-07-14 12:42:54 发布 · 357 阅读

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本文介绍了一个使用Java Swing库构建的简单GUI应用程序实例。该程序包括单选按钮和复选框等交互元素，用户的选择会实时显示在一个文本区域中。通过这个例子，读者可以了解如何在Java中创建基本的图形用户界面。

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import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class test {
     public static void main(String[] args){
         MyJFrame myJFrame = new MyJFrame();
         myJFrame.setTitle("组件事件");
         myJFrame.setBounds(100, 100, 750, 450);
         myJFrame.setVisible(true);
     }
}

class MyJFrame extends JFrame implements ActionListener{
     JPanel mJPanel;
     JLabel mJLabel_xingQu,mJLabel_Sex;
     JCheckBox mJCheckBox_yuMaoQiu,mJCheckBox_pingPangQiu,mJCheckBox_changGe;
     JRadioButton mJRadioButton_man,mJRadioButton_woman;
     ButtonGroup group;//用来放男、女单选按钮的
     Box mBox1,mBox2;
     JScrollPane mJScrollPane;
     JTextArea mJTextArea;

     public MyJFrame(){
         // TODO Auto-generated constructor stub
         mJPanel = new JPanel();
         mJPanel.setLayout(new GridLayout(2,1));//为JPanel指定两行一列的布局
         mJTextArea = new JTextArea(15,60);
         mJScrollPane = new JScrollPane(mJTextArea);
         add(mJPanel,BorderLayout.NORTH);
         add(mJScrollPane, BorderLayout.CENTER);

mJRadioButton_man = new JRadioButton("男");
mJRadioButton_woman = new JRadioButton("女");

         group = new ButtonGroup();
         group.add(mJRadioButton_man);
         group.add(mJRadioButton_woman);

mJLabel_xingQu = new JLabel("兴趣");
mJLabel_Sex = new JLabel("性别");

mBox1 = Box.createHorizontalBox();//创建横向的Box盒布局容器
mBox2 = Box.createHorizontalBox();

mJPanel.add(mBox1);
mJPanel.add(mBox2);

         mJCheckBox_yuMaoQiu = new JCheckBox("羽毛球");
         mJCheckBox_pingPangQiu = new JCheckBox("乒乓球");
         mJCheckBox_changGe = new JCheckBox("唱歌");

         mBox1.add(mJLabel_xingQu);
         mBox1.add(Box.createHorizontalStrut(10));//设置间隔
         mBox1.add(mJCheckBox_yuMaoQiu);
         mBox1.add(mJCheckBox_pingPangQiu);
         mBox1.add(mJCheckBox_changGe);

         mBox2.add(mJLabel_Sex);
         mBox2.add(Box.createHorizontalStrut(10));//设置间隔
         mBox2.add(mJRadioButton_man);//这里不能直接add group!!
         mBox2.add(mJRadioButton_woman);

         //////////设置点击事件////////////////
         mJRadioButton_man.addActionListener(this);
         mJRadioButton_woman.addActionListener(this);
         mJCheckBox_yuMaoQiu.addActionListener(this);
         mJCheckBox_pingPangQiu.addActionListener(this);
         mJCheckBox_changGe.addActionListener(this);

}

     @Override
     public void actionPerformed(ActionEvent e) {
         // TODO Auto-generated method stub
         if (e.getSource()==mJRadioButton_man) {
             if (mJRadioButton_man.isSelected()) {
                 //这里两条语句效果一样
                 mJTextArea.append(mJRadioButton_man.getText()+"\n");
//               mJTextArea.append(mJRadioButton_man.getActionCommand()+"\n");
             }
         }else if (e.getSource()==mJRadioButton_woman) {
             if (mJRadioButton_woman.isSelected()) {
                 mJTextArea.append(mJRadioButton_woman.getText()+"\n");
             }
         }else if (e.getSource()==mJCheckBox_yuMaoQiu) {
             if (mJCheckBox_yuMaoQiu.isSelected()) {
                 mJTextArea.append(mJCheckBox_yuMaoQiu.getText()+"\n");
             }
         }else if (e.getSource()==mJCheckBox_pingPangQiu) {
             if (mJCheckBox_pingPangQiu.isSelected()) {
                 mJTextArea.append(mJCheckBox_pingPangQiu.getText()+"\n");
             }
         }else if (e.getSource()==mJCheckBox_changGe) {
             if (mJCheckBox_changGe.isSelected()) {
                 mJTextArea.append(mJCheckBox_changGe.getText()+"\n");
             }
         }
     }
}