mainjframe.java

一个包含简单查询的JAVA记事本 内容简单 初学者适用

        jMenu1.setText("\u6587\u4ef6");
        jMenuItem1.setText("\u6253\u5f00");
        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItem1);

        jMenuItem2.setText("\u4fdd\u5b58");
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItem2);

        jMenuItem3.setText("\u9000\u51fa");
        jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem3ActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItem3);

        jMenuBar1.add(jMenu1);

        jMenu2.setText("\u641c\u7d22");
        jMenuItem4.setText("\u67e5\u627e");
        jMenuItem4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem4ActionPerformed(evt);
            }
        });

        jMenu2.add(jMenuItem4);

        jMenuBar1.add(jMenu2);

        setJMenuBar(jMenuBar1);

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField1ActionPerformed
// TODO 将在此处添加您的处理代码：
    }//GEN-LAST:event_jTextField1ActionPerformed
    //关闭查找框
    private void jButton2ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
// TODO 将在此处添加您的处理代码：
        jDialog1.dispose ();
    }//GEN-LAST:event_jButton2ActionPerformed
    //开始查找工作
    private void jButton1ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO 将在此处添加您的处理代码：
        String string = jTextField1.getText ();
        boolean upOrLow = jCheckBox1.isSelected ();
        boolean danCi = jCheckBox2.isSelected ();
        Tools.find (this.jEditorPane1,string, upOrLow, danCi, upOrDown, start, end);
    }//GEN-LAST:event_jButton1ActionPerformed
    //处理复选按钮
    private void jRadioButton2ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButton2ActionPerformed
// TODO 将在此处添加您的处理代码：
        upOrDown = false;
    }//GEN-LAST:event_jRadioButton2ActionPerformed
    //处理复选按钮
    private void jRadioButton1ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButton1ActionPerformed
// TODO 将在此处添加您的处理代码：
        upOrDown = true;
    }//GEN-LAST:event_jRadioButton1ActionPerformed
    //处理插入符的位置
    private void jEditorPane1CaretUpdate (javax.swing.event.CaretEvent evt) {//GEN-FIRST:event_jEditorPane1CaretUpdate
// TODO 将在此处添加您的处理代码：
        if (evt.getDot () > evt.getMark ()) {
            end = evt.getDot ();
            start = evt.getMark ();
        } else {
            start = evt.getDot ();
            end = evt.getMark ();
        }
    }//GEN-LAST:event_jEditorPane1CaretUpdate
    //处理查找框
    private void jMenuItem4ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem4ActionPerformed
// TODO 将在此处添加您的处理代码：
        jDialog1.setSize (400, 220);
        jDialog1.setVisible (true);
    }//GEN-LAST:event_jMenuItem4ActionPerformed
    //处理退出
    private void jMenuItem3ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem3ActionPerformed
// TODO 将在此处添加您的处理代码：
        this.dispose ();
    }//GEN-LAST:event_jMenuItem3ActionPerformed
    //处理保存按钮
    private void jMenuItem2ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
// TODO 将在此处添加您的处理代码：
        JFileChooser jFileChooser = new JFileChooser();
        jFileChooser.showSaveDialog(this);
        File file = jFileChooser.getSelectedFile();
        String text = jEditorPane1.getText ();
        Scanner scan = new Scanner(text);
        try {
            PrintWriter pw = new PrintWriter(file);
            while (scan.hasNextLine ())
                pw.write (scan.nextLine () + "\n");
            pw.flush ();
            pw.close ();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } finally {
            scan.close ();
        }
    }//GEN-LAST:event_jMenuItem2ActionPerformed
    //处理打开按钮
    private void jMenuItem1ActionPerformed (java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
// TODO 将在此处添加您的处理代码：
        JFileChooser jFileChooser = new JFileChooser();
        //用createFilter1添加一个c++文件的过滤器
        jFileChooser.setFileFilter (FileFilterFactory.createFilter ("c++ 文件",
                ".cc", ".cpp", ".cxx"));
        
        //用createFilter2添加一个Java文件的过滤器
        jFileChooser.setFileFilter (FileFilterFactory.createFilter ("Java 文件",
                "java"));
        
        jFileChooser.showOpenDialog(this);
        if (jFileChooser.getApproveButtonMnemonic() == JFileChooser.CANCEL_OPTION)
            return;
        File file = jFileChooser.getSelectedFile();
        StringBuilder buf = new StringBuilder();
        Scanner scan;
        try {
            scan = new Scanner (file);
            while (scan.hasNextLine ())
                buf.append (scan.nextLine () + "\n");
            jEditorPane1.setText (buf.toString ());
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        }
    }//GEN-LAST:event_jMenuItem1ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main (String args[]) {
        java.awt.EventQueue.invokeLater (new Runnable () {
            public void run () {
                new MainJFrame ().setVisible (true);
            }
        });
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JCheckBox jCheckBox1;
    private javax.swing.JCheckBox jCheckBox2;
    private javax.swing.JDialog jDialog1;
    private javax.swing.JEditorPane jEditorPane1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenu2;
    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;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField jTextField1;
    // 变量声明结束//GEN-END:variables
    
}