Java 在jTextArea中打印jRadioButtons

我不知道如何将jRadioButton选择添加到我的程序中。我不确定我是否应该创建一个监听器方法或什么，因为我从未创建过监听器，并且对如何创建有点困惑

我的代码如下：

    package my.userFormUI;
/**
 *
 * @author Randy
 */

import java.awt.event.*;
public class userFormUI extends javax.swing.JFrame {

    //Register a listener for the radio buttons.



    /**
     * Creates new form userFormUI
     */
    public userFormUI() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    int age;
    int year;
    String studying;

    public int getAge(int year_of_birth){//get year method
        age = 2014 - year_of_birth;
    return age;
}//end method

    public void printTextField(String text) {
    jTextArea1.setText(text);
    }

    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jDialog1 = new javax.swing.JDialog();
        jDialog2 = new javax.swing.JDialog();
        jDialog3 = new javax.swing.JDialog();
        buttonGroup1 = new javax.swing.ButtonGroup();
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        name = new javax.swing.JTextField();
        year_of_birth = new javax.swing.JTextField();
        jComboBox1 = new javax.swing.JComboBox();
        jLabel4 = new javax.swing.JLabel();
        jRadioButton1 = new javax.swing.JRadioButton();
        jRadioButton2 = new javax.swing.JRadioButton();
        jButton1 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton2 = new javax.swing.JButton();

        javax.swing.GroupLayout jDialog1Layout = new javax.swing.GroupLayout(jDialog1.getContentPane());
        jDialog1.getContentPane().setLayout(jDialog1Layout);
        jDialog1Layout.setHorizontalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        jDialog1Layout.setVerticalGroup(
            jDialog1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );

        javax.swing.GroupLayout jDialog2Layout = new javax.swing.GroupLayout(jDialog2.getContentPane());
        jDialog2.getContentPane().setLayout(jDialog2Layout);
        jDialog2Layout.setHorizontalGroup(
            jDialog2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        jDialog2Layout.setVerticalGroup(
            jDialog2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );

        javax.swing.GroupLayout jDialog3Layout = new javax.swing.GroupLayout(jDialog3.getContentPane());
        jDialog3.getContentPane().setLayout(jDialog3Layout);
        jDialog3Layout.setHorizontalGroup(
            jDialog3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        jDialog3Layout.setVerticalGroup(
            jDialog3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "User Information", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Times New Roman", 1, 12), new java.awt.Color(0, 0, 0))); // NOI18N

        jLabel1.setText("NAME:");

        jLabel2.setText("YEAR BORN:");

        jLabel3.setText("EMPLOYMENT STATUS:");

        name.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                nameActionPerformed(evt);
            }
        });

        year_of_birth.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                year_of_birthActionPerformed(evt);
            }
        });

        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Employed", "Not Employed" }));
        jComboBox1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jComboBox1ActionPerformed(evt);
            }
        });

        jLabel4.setText("STUDYING");

        jRadioButton1.setText("Yes");
        jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton1ActionPerformed(evt);
            }
        });

        jRadioButton2.setText("No");
        jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton2ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(jLabel2)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(year_of_birth))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                                .addComponent(jLabel1)
                                .addGap(33, 33, 33)
                                .addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, 277, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addComponent(jLabel4)
                                .addGap(18, 18, 18)
                                .addComponent(jRadioButton1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jRadioButton2))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addComponent(jLabel3)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 227, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGap(0, 0, Short.MAX_VALUE)))
                .addGap(0, 26, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(year_of_birth, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(14, 14, 14)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(jRadioButton1)
                    .addComponent(jRadioButton2))
                .addContainerGap(14, Short.MAX_VALUE))
        );

        jButton1.setText("SUBMIT");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jButton2.setText("EXIT");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(18, 18, 18)
                        .addComponent(jScrollPane1)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                        

    private void year_of_birthActionPerformed(java.awt.event.ActionEvent evt) {                                              
        // TODO add your handling code here:              

    }                                             


    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here 
        String employment = jComboBox1.getSelectedItem().toString();
        printTextField("Welcome " + name.getText() + "! You are " + getAge(Integer.parseInt(year_of_birth.getText())) + 
                " old." + "\n" + "Your Employment Status: " + employment + 
                "\n" + "Your Studying Status: " + studying);


    }                                        

    private void nameActionPerformed(java.awt.event.ActionEvent evt) {                                     
        // TODO add your handling code here:

    }                                    

    private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
    }                                          

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        System.exit(0);
    }                                        

    private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                              

        jRadioButton1.addActionListener(new ActionListener(){
    @Override
    public void actionPerformed(ActionEvent e){ 
    studying = "Not Studying";
    }
 });

    }                                             

    private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                              
        jRadioButton2.addActionListener(new ActionListener(){
    @Override
    public void actionPerformed(ActionEvent e){ 
    studying = "Studying";
    }
});
    }                                             

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(userFormUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new userFormUI().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JDialog jDialog1;
    private javax.swing.JDialog jDialog2;
    private javax.swing.JDialog jDialog3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField name;
    private javax.swing.JTextField year_of_birth;
    // End of variables declaration                   
}

包my.userFormUI；
/**
*
*@作者兰迪
*/
导入java.awt.event.*；
公共类userFormUI扩展了javax.swing.JFrame{
//注册单选按钮的侦听器。
/**
*创建新表单userFormUI
*/
公共用户formui（）{
初始化组件（）；
}
/**
*从构造函数中调用此方法来初始化表单。
*警告：不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告（“未选中”）
智力年龄；
国际年；
弦乐研究；
公共整数获取（整数年出生）{//get year方法
年龄=2014年-出生年份；
回归年龄；
}//结束方法
公共无效打印文本字段（字符串文本）{
jTextArea1.setText（文本）；
}
//                           
私有组件（）{
jDialog1=newjavax.swing.JDialog（）；
jDialog2=newjavax.swing.JDialog（）；
jDialog3=newjavax.swing.JDialog（）；
buttonGroup1=newjavax.swing.ButtonGroup（）；
jPanel1=newjavax.swing.JPanel（）；
jLabel1=newjavax.swing.JLabel（）；
jLabel2=newjavax.swing.JLabel（）；
jLabel3=newjavax.swing.JLabel（）；
name=newjavax.swing.JTextField（）；
出生年份=newjavax.swing.JTextField（）；
jcombox1=newjavax.swing.JComboBox（）；
jLabel4=newjavax.swing.JLabel（）；
JRadioButton 1=newjavax.swing.JRadioButton（）；
JRadioButton 2=newjavax.swing.JRadioButton（）；
jButton1=newjavax.swing.JButton（）；
jScrollPane1=newjavax.swing.JScrollPane（）；
jTextArea1=newjavax.swing.JTextArea（）；
jButton2=newjavax.swing.JButton（）；
javax.swing.GroupLayout jDialog1Layout=新建javax.swing.GroupLayout（jDialog1.getContentPane（））；
jDialog1.getContentPane（）.setLayout（jDialog1Layout）；
jDialog1Layout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，400，短。最大值）
);
jDialog1Layout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，300，短。最大值）
);
javax.swing.GroupLayout jDialog2Layout=新建javax.swing.GroupLayout（jDialog2.getContentPane（））；
jDialog2.getContentPane（）.setLayout（jDialog2Layout）；
jDialog2Layout.setHorizontalGroup(
jDialog2Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，400，短。最大值）
);
jDialog2Layout.setVerticalGroup(
jDialog2Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，300，短。最大值）
);
javax.swing.GroupLayout jDialog3Layout=新建javax.swing.GroupLayout（jDialog3.getContentPane（））；
jDialog3.getContentPane（）.setLayout（jDialog3Layout）；
jDialog3Layout.setHorizontalGroup(
jDialog3Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，400，短。最大值）
);
jDialog3Layout.setVerticalGroup(
jDialog3Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGap（0，300，短。最大值）
);
setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）；
jPanel1.setBorder（javax.swing.BorderFactory.createTitleBorder（null，“用户信息”，javax.swing.border.titleBorder.DEFAULT_对齐，javax.swing.border.titleBorder.DEFAULT_位置，新java.awt.Font（“Times new Roman”，1,12），新java.awt.Color（0,0））；//NOI18N
jLabel1.setText（“名称：”）；
jLabel2.setText（“出生年份：”）；
jLabel3.setText（“就业状况：”）；
name.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行的名称（evt）；
}
});
出生年份。addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行的年度（evt）；
}
});
setModel（新的javax.swing.DefaultComboxModel（新字符串[]{“已使用”、“未使用”}））；
jcombox1.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
JCombox1ActionPerformed（evt）；
}
});
jLabel4.setText（“学习”）；
jRadioButton1.setText（“是”）；
jRadioButton1.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
jRadioButton1ActionPerformed（evt）；
}
});
jRadioButton2.setText（“否”）；
jRadioButton2.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
jRadioButton2ActionPerformed（evt）；
}
});
javax.swing.GroupLayout jPanel1Layout=新的javax.swing.GroupLayout（jPanel1）；
setLayout（jPanel1Layout）；
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（jpanellayout.createSequentialGroup（）
.addContainerGap（）
.addGroup（jPanel1Layout.createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（jPanel1Layou）
    jRadioButton1.setText("Yes");
    jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jRadioButton1ActionPerformed(evt);
        }
    });

    jRadioButton2.setText("No");
    jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jRadioButton2ActionPerformed(evt);
        }
    });

private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                              
    studying = "Not Studying";
}                                             

private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                              
    studying = "Studying";
}

buttonGroup1.add(jRadioButton1);
buttonGroup1.add(jRadioButton2);