cacul.java

一个采用了词法分析和语法分析的计算器

        jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem1ActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItem1);

        jMenuItem2.setText("\u9000\u51fa");
        jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem2ActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItem2);

        jMenuBar1.add(jMenu1);

        jMenu2.setText("\u5e2e\u52a9");
        jMenuItem3.setText("\u5e2e\u52a9\u4e3b\u9898");
        jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem3ActionPerformed(evt);
            }
        });

        jMenu2.add(jMenuItem3);

        jMenuItem4.setText("\u7cfb\u7edf\u8bf4\u660e");
        jMenuItem4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem4ActionPerformed(evt);
            }
        });

        jMenu2.add(jMenuItem4);

        jMenuBar1.add(jMenu2);

        jMenu3.setText("\u94fe\u63a5");
        jMenuItem6.setText("\u5927\u5de5\u9996\u9875");
        jMenuItem6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem6ActionPerformed(evt);
            }
        });

        jMenu3.add(jMenuItem6);

        jMenuItem7.setText("\u8f6f\u9662\u9996\u9875");
        jMenuItem7.setActionCommand("\u5927\u5de5\u8f6f\u9662\u9996\u9875");
        jMenuItem7.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItem7ActionPerformed(evt);
            }
        });

        jMenu3.add(jMenuItem7);

        jMenuBar1.add(jMenu3);

        setJMenuBar(jMenuBar1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 371, Short.MAX_VALUE)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(21, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton8, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton5, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton6, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton7, javax.swing.GroupLayout.DEFAULT_SIZE, 67, Short.MAX_VALUE)
                    .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton18, 0, 0, Short.MAX_VALUE)
                    .addComponent(jButton12, javax.swing.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                    .addComponent(jButton13, 0, 0, Short.MAX_VALUE)
                    .addComponent(jButton14, 0, 0, Short.MAX_VALUE)
                    .addComponent(jButton15, javax.swing.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                    .addComponent(jButton11, javax.swing.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                    .addComponent(jButton10, javax.swing.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                    .addComponent(jButton9, javax.swing.GroupLayout.DEFAULT_SIZE, 64, Short.MAX_VALUE)
                    .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton19, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton27, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton26, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton21, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton22, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton23, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton24, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton25, javax.swing.GroupLayout.DEFAULT_SIZE, 72, Short.MAX_VALUE)
                    .addComponent(jButton20, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(10, 10, 10)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton28, javax.swing.GroupLayout.DEFAULT_SIZE, 115, Short.MAX_VALUE)
                    .addComponent(jButton30, javax.swing.GroupLayout.DEFAULT_SIZE, 115, Short.MAX_VALUE)
                    .addComponent(jButton29, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 115, Short.MAX_VALUE))
                .addContainerGap())
            .addGroup(layout.createSequentialGroup()
                .addGap(26, 26, 26)
                .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, 335, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton20, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton9, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton29, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton10, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton30, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton19, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton11, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton21, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton28, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton12, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton22, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton13, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton23, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton6, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton24, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton14, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton15, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton25, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton8, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton26, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton17)
                    .addComponent(jButton18)
                    .addComponent(jButton27))
                .addGap(36, 36, 36)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(20, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    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：
      pCur=0;
      ip=0;
      s0="";
      jTextField1.setText("Please restart!");
    }//GEN-LAST:event_jMenuItem1ActionPerformed

    private void jMenuItem7ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem7ActionPerformed
// TODO 将在此处添加您的处理代码：
        try{
           Runtime.getRuntime().exec(" \"C:\\Program  Files\\Internet  Explorer\\iexplore.exe\" http://ssdut.dlut.edu.cn/ssdut/new/index.php");
      }catch(IOException e){}
    }//GEN-LAST:event_jMenuItem7ActionPerformed

    private void jMenuItem6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem6ActionPerformed
// TODO 将在此处添加您的处理代码：
        try{
           Runtime.getRuntime().exec(" \"C:\\Program  Files\\Internet  Explorer\\iexplore.exe\" http://www.dlut.edu.cn/");
      }catch(IOException e){}
    }//GEN-LAST:event_jMenuItem6ActionPerformed

    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：
        String str;
        str="本系统在windows XP professional操作系统中采用NetBean5.5开发完成！\n如发现bug请与QQxxxxxxxx联系";
       JOptionPane.showMessageDialog(this, str, "系统说明",
                                      JOptionPane.PLAIN_MESSAGE);  
    }//GEN-LAST:event_jMenuItem4ActionPerformed

    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：
       String str;
       str="                 欢迎使用本科学计算器！\n                           当前版本 1.0！";
       JOptionPane.showMessageDialog(this, str, "帮助主题",
                                      JOptionPane.PLAIN_MESSAGE);  
    }//GEN-LAST:event_jMenuItem3ActionPerformed

    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：
        System.exit(0);
    }//GEN-LAST:event_jMenuItem2ActionPerformed

    private void jButton30ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton30ActionPerformed
// TODO 将在此处添加您的处理代码：
      pCur=0;
      ip=0;
      s0="";
      jTextField1.setText("Please restart!");
    }//GEN-LAST:event_jButton30ActionPerformed

    private void jButton29ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton29ActionPerformed
// TODO 将在此处添加您的处理代码：
      s0=s0.substring(0,ip);
      jTextField1.setText(s0);
      ip--;
    }//GEN-LAST:event_jButton29ActionPerformed

    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：
    }//GEN-LAST:event_jButton1ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Cacul().setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton10;
    private javax.swing.JButton jButton11;
    private javax.swing.JButton jButton12;
    private javax.swing.JButton jButton13;
    private javax.swing.JButton jButton14;
    private javax.swing.JButton jButton15;
    private javax.swing.JButton jButton16;
    private javax.swing.JButton jButton17;
    private javax.swing.JButton jButton18;
    private javax.swing.JButton jButton19;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton20;
    private javax.swing.JButton jButton21;
    private javax.swing.JButton jButton22;
    private javax.swing.JButton jButton23;
    private javax.swing.JButton jButton24;
    private javax.swing.JButton jButton25;
    private javax.swing.JButton jButton26;
    private javax.swing.JButton jButton27;
    private javax.swing.JButton jButton28;
    private javax.swing.JButton jButton29;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton30;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JButton jButton8;
    private javax.swing.JButton jButton9;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenu2;
    private javax.swing.JMenu jMenu3;
    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.JMenuItem jMenuItem6;
    private javax.swing.JMenuItem jMenuItem7;
    private javax.swing.JTextField jTextField1;
    // 变量声明结束//GEN-END:variables
    
}