求助简单文本复制问题

Question

现在已经取得了 两个文本的路径
然后需要什么知识点复制过来呢 
其实算是截取 
例如文本1-----2，3，4，5，6 
在自己做的界面输入3个逗号 
截取在文本2----得到的是4

Answer 1

 import java.awt.FileDialog;
public class NewJFrame extends javax.swing.JFrame {
    public FileDialog fsave;  //windows对话框
    public FileDialog fload;    /** Creates new form NewJFrame */
    public NewJFrame() {
        initComponents();
        aaa();
    }    private void aaa() {        fload = new FileDialog(this, "Open", FileDialog.LOAD);
        fsave = new FileDialog(this, "Save", FileDialog.SAVE);
    }    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {        textField1 = new java.awt.TextField();//打开路径
        textField2 = new java.awt.TextField();//保存到路径
        jButton1 = new javax.swing.JButton();//打开
        jButton2 = new javax.swing.JButton();//保存到
        jRadioButton1 = new javax.swing.JRadioButton();//逗号
        jRadioButton2 = new javax.swing.JRadioButton();//TAB
        textField3 = new java.awt.TextField();//这在里添加数字，选择逗号后写入数字，后处理，选择TAB同理
        label1 = new java.awt.Label();
        jButton3 = new javax.swing.JButton();//保存        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);       //还有些关于按钮之类设置 太长下边添加
        pack();
    }// </editor-fold>  
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//监听打开按钮
        fload.setVisible(true);
        String name = fload.getFile();
        String name1 = fload.getDirectory();
        if (name != null) {
            textField1.setText(name1 + name);//得到打开文件的路径
        } else {
            textField2.setText(" null");
        }
    }    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//监听保存到按钮
        fsave.setVisible(true);
        String name = fsave.getFile();
        String name1 = fsave.getDirectory();
        if (name != null) {
            textField1.setText(name1 + name);//得到保存到文件的路径
        } else {
            textField2.setText(" null");
        }
    }
  private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {
    //在这里就是得到选择逗号隔开，没用过，不知道怎么办呢
}    private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:  //同上    }    private void textField3ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here://这里就是添加数字，对以上两个符号的个数
    }    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here://保存  就是把打开的文件内容保存到文件2内容，内容有所改变，
被符号给截取了，
    }    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private java.awt.Label label1;
    private java.awt.TextField textField1;
    private java.awt.TextField textField2;
    private java.awt.TextField textField3;
    // End of variables declaration
}
谢谢  这个应该怎么实现呢

Answer 2

 jButton1.setText("open");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });        jButton2.setText("save");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });        jRadioButton1.setText("カンマ");
        jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton1ActionPerformed(evt);
            }
        });        jRadioButton2.setText("タブー");
        jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jRadioButton2ActionPerformed(evt);
            }
        });        textField3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                textField3ActionPerformed(evt);
            }
        });        label1.setText("個目を出力する。");        jButton3.setText("出力");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(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()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(24, 24, 24)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                    .addComponent(textField2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(textField1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 106, Short.MAX_VALUE)))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jRadioButton1)
                                .addGap(18, 18, 18)
                                .addComponent(jRadioButton2)))
                        .addGap(33, 33, 33)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(textField3, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, 91, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jButton2)
                            .addComponent(jButton1)))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(95, 95, 95)
                        .addComponent(jButton3)))
                .addContainerGap(37, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addGap(29, 29, 29)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(textField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1))
                .addGap(31, 31, 31)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton2)
                    .addComponent(textField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(24, 24, 24)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jRadioButton1)
                            .addComponent(jRadioButton2)))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(22, 22, 22)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(textField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addGap(18, 18, 18)
                .addComponent(jButton3)
                .addContainerGap(12, Short.MAX_VALUE))
        );