newjframe.java

将前缀表达式转为中缀表达式

        jTextField3.setText("");
        jTextField2.setText("");
        jTextField1.setText("");
        jButton6.setEnabled(false);
        jTextField5.setText("");
        jTextField6.setText("");
        jTextField5.setEditable(false);
        jPanel6.in=jTextField1.getText();
        jPanel6.repaint();
    }//GEN-LAST:event_jButton4ActionPerformed

    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
        // TODO add your handling code here:
        jComboBox1.removeAllItems();
        jButton3.setEnabled(false);
        jButton2.setEnabled(false);
        jButton5.setEnabled(false);
        jTextField3.setEditable(false);
        jTextField4.setText("");
        jTextArea1.setText("");
        jTextField3.setText("");
        jTextField2.setText("");
        jTextField1.setText("");
        jButton6.setEnabled(false);
        jTextField5.setText("");
        jTextField6.setText("");
        jTextField5.setEditable(false);
        jPanel6.in=jTextField1.getText();
        jPanel6.repaint();
    }//GEN-LAST:event_jMenuItem1ActionPerformed

    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
        // TODO add your handling code here:
        System.exit(0);
    }//GEN-LAST:event_jMenuItem2ActionPerformed

    private void jTextField5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField5ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField5ActionPerformed

    private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton6ActionPerformed
        // TODO add your handling code here:
        
        J_Tree a,b;
        int k=0,mark=0,shu=0;
        for(int i=0;i<jTextField5.getText().length();i++){
            if((jTextField5.getText().charAt(i)-'0'>=0&&jTextField5.getText().charAt(i)-'0'<=9)
                    ||(jTextField5.getText().charAt(i)-'a'>=0&&jTextField5.getText().charAt(i)-'z'<=0)
                    ||(jTextField5.getText().charAt(i)-'A'>=0&&jTextField5.getText().charAt(i)-'Z'<=0)){
                shu++;
            }
            else if(jTextField5.getText().charAt(i)=='+'
                    ||jTextField5.getText().charAt(i)=='/'||jTextField5.getText().charAt(i)=='-'
                    ||jTextField5.getText().charAt(i)=='^'||jTextField5.getText().charAt(i)=='*'){
                mark++;
            }
            else {
                javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
                k=1;
                jTextField5.setText("");
                break;
            }
            if(i<jTextField5.getText().length()-1&&shu>mark){
                javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
                k=1;
                jTextField5.setText("");
                break; 
            }
        }
        if(k==0&&shu!=mark+1){
            javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
            k=1;
            jTextField5.setText("");
        } 
        if(k==0){

            a=NewClass.JReadExpre(jTextField1.getText());
            b=NewClass.JReadExpre(jTextField5.getText());
            jTextField6.setText(NewClass.WriteExpr(NewClass.hebing(a,b,jComboBox2.getSelectedIndex())));
            jButton2.setEnabled(false);
            jTextField3.setText("");
            jTextField4.setText("");
            jComboBox1.removeAllItems();
            jTextArea1.setText("");
            NewClass.WriteExpr(a);
            for(int i=0;i<NewClass.j;i++){
       
                jComboBox1.addItem(NewClass.b[i]);
                jTextArea1.append(NewClass.b[i]+"="+NewClass.zh[i]+"\n");
            }
            
            
        }
    }//GEN-LAST:event_jButton6ActionPerformed

    @SuppressWarnings("static-access")
    private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton7ActionPerformed
        // TODO add your handling code here:
        int k=0,shu=0,mark=0;
        for(int i=0;i<jTextField1.getText().length();i++){
            if((jTextField1.getText().charAt(i)-'0'>=0&&jTextField1.getText().charAt(i)-'0'<=9)
                    ||(jTextField1.getText().charAt(i)-'a'>=0&&jTextField1.getText().charAt(i)-'z'<=0)
                    ||(jTextField1.getText().charAt(i)-'A'>=0&&jTextField1.getText().charAt(i)-'Z'<=0)){
                shu++;
            }
            else if(jTextField1.getText().charAt(i)=='+'
                    ||jTextField1.getText().charAt(i)=='/'||jTextField1.getText().charAt(i)=='-'
                    ||jTextField1.getText().charAt(i)=='^'||jTextField1.getText().charAt(i)=='*'){
                mark++;
            }
            else {
                javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
                k=1;
                jTextField1.setText("");
                break;
            }
            if(i<jTextField1.getText().length()-1&&shu>mark){
                javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
                k=1;
                jTextField1.setText("");
                break; 
            }
        }
        if(k==0&&shu!=mark+1){
            javax.swing.JOptionPane.showMessageDialog(null,"数据不合法，请输入前缀表达式","警告",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/2.gif"));
            k=1;
            jTextField1.setText("");
        }
        if(k==0){
           jPanel6.in=jTextField1.getText();
           jPanel6.repaint(); 
        }
        
    }//GEN-LAST:event_jButton7ActionPerformed

    private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton5ActionPerformed
        // TODO add your handling code here:
        if(jTextField2.getText().length()!=0){
            jTextField2.setText(""+NewClass.WriteExpr(NewClass.JReadExpre(jTextField1.getText()))+"="+NewClass.chang(NewClass.JReadExpre(jTextField1.getText())));
        }
        
        NewClass.WriteExpr(NewClass.JReadExpre(jTextField1.getText()));
        
        jButton2.setEnabled(false);
        jButton5.setEnabled(false);
        jTextField3.setText("");
        jTextField4.setText("");
        jComboBox1.removeAllItems();
        jTextArea1.setText("");
        
        for(int i=0;i<NewClass.j;i++){
       
                jComboBox1.addItem(NewClass.b[i]);
                jTextArea1.append(NewClass.b[i]+"="+NewClass.zh[i]+"\n");
            }
        
    }//GEN-LAST:event_jButton5ActionPerformed

    private void jMenuItem9ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem9ActionPerformed
        // TODO add your handling code here:
        javax.swing.JOptionPane.showMessageDialog(null,"这是一个对表达式进行处理的软件\n具体说明见用户手册\n版本信息:T&E1.0\n2008年6月","关于",javax.swing.JOptionPane.INFORMATION_MESSAGE,new javax.swing.ImageIcon("images/1.gif"));
        
    }//GEN-LAST:event_jMenuItem9ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JComboBox jComboBox2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel10;
    private javax.swing.JLabel jLabel14;
    private javax.swing.JLabel jLabel15;
    private javax.swing.JLabel jLabel16;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JMenu jMenu5;
    private javax.swing.JMenu jMenu6;
    private javax.swing.JMenuBar jMenuBar3;
    private javax.swing.JMenuItem jMenuItem7;
    private javax.swing.JMenuItem jMenuItem8;
    private javax.swing.JMenuItem jMenuItem9;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JPanel jPanel5;
    private Tpanel jPanel6;
    private javax.swing.JPanel jPanel7;
    private javax.swing.JPanel jPanel8;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private javax.swing.JTextField jTextField5;
    private javax.swing.JTextField jTextField6;
    // End of variables declaration//GEN-END:variables
    
}