newjframe.java

将前缀表达式转为中缀表达式

/*
 * NewJFrame.java
 *
 * Created on 2008年6月1日, 下午11:29
 */

package pro;
/**
 *
 * @author  Administrator
 */
public class NewJFrame extends javax.swing.JFrame {
    
    /** Creates new form NewJFrame */
    public NewJFrame() {
        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.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel2 = new javax.swing.JPanel();
        jPanel1 = new javax.swing.JPanel();
        jTextField1 = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jTextField2 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jLabel10 = new javax.swing.JLabel();
        jPanel3 = new javax.swing.JPanel();
        jLabel6 = new javax.swing.JLabel();
        jButton6 = new javax.swing.JButton();
        jTextField5 = new javax.swing.JTextField();
        jComboBox2 = new javax.swing.JComboBox();
        jLabel7 = new javax.swing.JLabel();
        jLabel8 = new javax.swing.JLabel();
        jTextField6 = new javax.swing.JTextField();
        jLabel15 = new javax.swing.JLabel();
        jLabel16 = new javax.swing.JLabel();
        jPanel5 = new javax.swing.JPanel();
        jLabel9 = new javax.swing.JLabel();
        jButton7 = new javax.swing.JButton();
        jPanel6 = new Tpanel();
        jPanel4 = new javax.swing.JPanel();
        jLabel2 = new javax.swing.JLabel();
        jComboBox1 = new javax.swing.JComboBox();
        jTextField3 = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton2 = new javax.swing.JButton();
        jTextField4 = new javax.swing.JTextField();
        jButton3 = new javax.swing.JButton();
        jLabel14 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jPanel7 = new javax.swing.JPanel();
        jPanel8 = new javax.swing.JPanel();
        jMenuBar3 = new javax.swing.JMenuBar();
        jMenu5 = new javax.swing.JMenu();
        jMenuItem7 = new javax.swing.JMenuItem();
        jMenuItem8 = new javax.swing.JMenuItem();
        jMenu6 = new javax.swing.JMenu();
        jMenuItem9 = new javax.swing.JMenuItem();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setResizable(false);

        jPanel2.setBackground(new java.awt.Color(102, 102, 102));

        jPanel1.setBackground(new java.awt.Color(204, 204, 204));
        jPanel1.setBorder(javax.swing.BorderFactory.createCompoundBorder(javax.swing.BorderFactory.createCompoundBorder(), javax.swing.BorderFactory.createCompoundBorder()));
        jPanel1.setEnabled(false);

        jTextField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField1ActionPerformed(evt);
            }
        });

        jLabel4.setFont(new java.awt.Font("幼圆", 1, 18));
        jLabel4.setForeground(new java.awt.Color(0, 0, 255));
        jLabel4.setText("中缀表达式");

        jTextField2.setEditable(false);
        jTextField2.setDisabledTextColor(new java.awt.Color(255, 255, 255));
        jTextField2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField2ActionPerformed(evt);
            }
        });

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

        jButton4.setText("全部清空");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });

        jButton5.setText("常数合并");
        jButton5.setEnabled(false);
        jButton5.setVerifyInputWhenFocusTarget(false);
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton5ActionPerformed(evt);
            }
        });

        jLabel1.setFont(new java.awt.Font("幼圆", 1, 18));
        jLabel1.setForeground(new java.awt.Color(0, 0, 255));
        jLabel1.setText("前缀表达式(H1)");

        jLabel10.setForeground(new java.awt.Color(255, 0, 0));
        jLabel10.setText("(前缀表达式中，变量为a-z,A-Z,常数为0-9)");

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(24, 24, 24)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jLabel1)
                        .addGap(18, 18, 18)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 169, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton4))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                    .addGroup(jPanel1Layout.createSequentialGroup()
                                        .addComponent(jLabel4)
                                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                        .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 194, javax.swing.GroupLayout.PREFERRED_SIZE))
                                    .addComponent(jButton5)))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(60, 60, 60)
                                .addComponent(jLabel10)))))
                .addContainerGap(20, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(21, 21, 21)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton4)
                    .addComponent(jLabel1))
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
                        .addGap(18, 18, 18)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 68, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(10, 10, 10)
                        .addComponent(jLabel10)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 16, Short.MAX_VALUE)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jLabel4)
                            .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton5)))
                .addContainerGap())
        );

        jPanel3.setBackground(new java.awt.Color(204, 204, 204));

        jLabel6.setFont(new java.awt.Font("宋体", 1, 18));
        jLabel6.setForeground(new java.awt.Color(0, 0, 255));
        jLabel6.setText("前缀表达式(H2)");

        jButton6.setText("合并");
        jButton6.setEnabled(false);
        jButton6.setMargin(new java.awt.Insets(0, 0, 0, 0));
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton6ActionPerformed(evt);
            }
        });

        jTextField5.setEditable(false);
        jTextField5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField5ActionPerformed(evt);
            }
        });

        jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "+", "-", "*", "/", "^" }));

        jLabel7.setFont(new java.awt.Font("宋体", 1, 18));
        jLabel7.setForeground(new java.awt.Color(0, 0, 255));
        jLabel7.setText("连接符号");

        jLabel8.setFont(new java.awt.Font("宋体", 1, 18));
        jLabel8.setForeground(new java.awt.Color(0, 0, 255));
        jLabel8.setText("中缀表达式");

        jTextField6.setEditable(false);

        jLabel15.setForeground(new java.awt.Color(255, 0, 0));
        jLabel15.setText("(此模块可将表达式H1和H2按连接");

        jLabel16.setForeground(new java.awt.Color(255, 0, 0));
        jLabel16.setText(" 符号合并，并输出中缀式)");

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()