Question

我想在我的程序中选择8个复选框，如果单击它们中的每一个都会有语句它与前两个复选框很好用，但从第三个开始我面临问题当我点击第三个例如它没有显示显示状态。

有谁能告诉我问题在哪里。这是代码：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Satis extends JFrame implements ActionListener
{
JCheckBox b1,b2,b3,b4,b5,b6,b7,b8;

  JLabel la2,la22,la222,la3,la33,la333,la4,la44,la444,la5,la55,la555,la6,la66,la666,la7,la77,la777,la8,la88,la888,la9,la99,la999;
public Satis()
{
     this.setLayout(null);

      JLabel la1=new JLabel("Select your problem area to get an advice:");
      la1.setBounds(160,20,340,20);
       la2=new JLabel("");
       la22=new JLabel("");
       la222=new JLabel("");
       la3=new JLabel("");
       la33=new JLabel("");
       la333=new JLabel("");
       la4=new JLabel("");
       la44=new JLabel("");
       la444=new JLabel("");
       la5=new JLabel("");
       la55=new JLabel("");
       la555=new JLabel("");
       la6=new JLabel("");
       la66=new JLabel("");
       la666=new JLabel("");
       la7=new JLabel("");
       la77=new JLabel("");
       la777=new JLabel("");
       la8=new JLabel("");
       la88=new JLabel("");
       la888=new JLabel("");
       la9=new JLabel("");
       la99=new JLabel("");
       la999=new JLabel("");


      b1=new JCheckBox("Housing");
      b1.setBounds(20,45,120,20);
      b2=new JCheckBox("Medical");
      b2.setBounds(440,45,120,20);
      b3=new JCheckBox("Transportation");
      b3.setBounds(20,120,140,20);
      b4=new JCheckBox("Food");
      b4.setBounds(440,120,140,20);
      b5=new JCheckBox("Utility");
      b6=new JCheckBox("Clothes");
      b7=new JCheckBox("Debt payments");
      b8=new JCheckBox("Personal");

      add(la1);
      add(la2);
      add(la22);
      add(la222);
      la2.setBounds(10,60,330,20);
      la22.setBounds(10,75,330,20);
      la222.setBounds(10,90,330,20);
      add(b1);

      add(la3);
      add(la33);
      add(la333);
      la3.setBounds(300,60,330,20);
      la33.setBounds(300,75,330,20);
      la333.setBounds(300,90,330,20);
      add(b2);

      add(la4);
      add(la44);
      add(la444);
      la4.setBounds(10,135,330,20);
      la44.setBounds(10,150,330,20);
      la444.setBounds(10,165,330,20);
      add(b3);

      add(la5);
      add(la55);
      add(la555);
      la5.setBounds(330,135,330,20);
      la5.setBounds(330,150,330,20);
      la5.setBounds(330,165,330,20);

      add(b4);

      add(la6);
      add(b5);

      add(la7);
      add(b6);

      add(la8);
      add(b7);

      add(la9);
      add(b8);


      b1.addActionListener(this);
      b2.addActionListener(this);
}
public void actionPerformed (ActionEvent ae)
{
    String s=ae.getActionCommand();
    if (b1.isSelected())
    {
        la2.setText("1. Move to a smaller place "); 
        la22.setText("2. Move further from the city");
        la222.setText("3. Raise your insurance deductible");
    }else {
        la2.setText("");
        la22.setText("");
        la222.setText("");

    }


    if (b2.isSelected())
        {
            la3.setText("1. Dont procrastinate");
            la33.setText("2. Reevaluate your vitamins");
            la333.setText("3. Ask: Do I really need that test?");
        }
            else {
                la3.setText("");
    la33.setText("");
    la333.setText("");
            }

if (b3.isSelected())
    {

        la4.setText("1. Calm your driving habits");
        la44.setText("2. Take advantage of car insurance discounts");
        la444.setText("3. Look for local transportation incentives");
    }
        else {
            la4.setText("");
la44.setText("");
la444.setText("");
        }
    if (b4.isSelected())
    {
        la5.setText("1. Make Healthy Choices, they’re Cheaper ");
        la55.setText("2. Use Sales and Coupons");
        la555.setText("3. Plant a Garden");
    }
        else {
            la5.setText("");
            la55.setText("");
            la555.setText("");
        }

    if (b5.isSelected())
    {
        la6.setText("1. Buy Energy-Efficient Appliances ");
        la66.setText("2. Scale Back on Cable Channels");
        la666.setText("3. Fix Leaks");
    }
        else {
            la6.setText("");
            la66.setText("");
            la666.setText("");
        }
    if (b6.isSelected())
    {
        la7.setText("1. Buy Better Quality Clothing ");
        la77.setText("2. Buy Clothes at the Right Time");
        la777.setText("3. Take Care of Your Clothes Better");
    }
        else {
            la7.setText("");
            la77.setText("");
            la777.setText("");
        }
    if (b7.isSelected())
    {
        la8.setText("1. Track Spending ");
        la88.setText("2. Build Savings");
        la888.setText("3. Reduce Debt");
    }
        else {
            la8.setText("");
            la88.setText("");
            la888.setText("");
        }
    if (b8.isSelected())
    {
        la9.setText("1. Avoid Full-Price Textbooks ");
        la99.setText("2. Get deals");
        la999.setText("3. Shop online");
    }
        else {
            la9.setText("");
            la99.setText("");
            la999.setText("");
        }






    }
public static void main(String[] args)
{
    Satis St=new Satis();
    St.setVisible(true);
    St.setSize(600,400);
}

}

Answer 1

您忘了添加

   b3.addActionListener(this);

因此，在使用JCheckBox时，永远不会调用该方法。

两个以上的JCheckBox？

1 个答案: