初学教材IDE7.0信息添加程序Frame窗体的源码不知怎么写?求帮忙解答

提示jTextAreal有错误 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.hand;
import java.awt.Container;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;/**
 *
 * @author Administrator
 */
public class StuFr extends javax.swing.JFrame{
    /**
     * Creates new form StuFr
     *
     * 
     JFileChooser chooser=null; 
    public StuFr() {
        initComponents();
        setLocation(this);
    }
      jPanel1 = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
      /**
     * 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")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuItem1 = new javax.swing.JMenuItem();
        jMenuItem2 = new javax.swing.JMenuItem();
        jMenuItem3 = new javax.swing.JMenuItem();
        jMenuItem4 = new javax.swing.JMenuItem();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        jMenu1.setText("文件");
        jMenu1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenu1ActionPerformed(evt);
            }
        });        jMenuItem1.setText("添加学生");
        jMenu1.add(jMenuItem1);        jMenuItem2.setText("退出 ");
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });
        jMenu1.add(jMenuItem2);        jMenuItem3.setText("打开");
        jMenu1.add(jMenuItem3);        jMenuItem4.setText("保存");
        jMenu1.add(jMenuItem4);        jMenuBar1.add(jMenu1);        setJMenuBar(jMenuBar1);        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 279, Short.MAX_VALUE)
        );        pack();
    }// </editor-fold>                            private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {                                       
        // TODO add your handling code here:
                                                   
        StuD d1=new StuD(null,true);
        d1.setSize(400,300); 
        setLocation(d1);
        d1.setResizable(false);
        d1.setVisible(true);
        if(d1.getok()==true){
        Stu u=d1.getStu();
       jTextArea1.append("身份证是:"+u.getIdenid()+"\n");
       jTextArea1.append("姓名为:"+u.getName()+"\n");
       jTextArea1.append("系部为:"+u.getDepartment()+"\n");
       jTextArea1.append("班级为:"+u.getClasses()+"\n\n");
        }
   
    }                                          private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {                                           
        // TODO add your handling code here:
        System.exit(0);
    }                                              /**
     * @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(StuFr.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(StuFr.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(StuFr.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(StuFr.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 StuFr().setVisible(true);
            }
        });
    }
          public static void setLocation(Container container){            java.awt.Dimension screen=java.awt.Toolkit.getDefaultToolkit().getScreenSize();
            java.awt.Dimension Dcontainer=container.getSize();            if(Dcontainer.height>screen.height){ Dcontainer.height=screen.height;
            }
            if(Dcontainer.width>screen.width){ Dcontainer.width=screen.width;
            }
            container.setLocation((screen.width-Dcontainer.width)/2,
            (screen.height-Dcontainer.height)/2);
       }
    // Variables declaration - do not modify                     
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JMenuItem jMenuItem3;
    private javax.swing.JMenuItem jMenuItem4;
    // End of variables declaration                   
}