简易计算器

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package folder;


import static java.awt.SystemColor.text;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;


/**
 *
 * @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.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {


        jLayeredPane1 = new javax.swing.JLayeredPane();
        jPanel1 = new javax.swing.JPanel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();
        jButton6 = new javax.swing.JButton();
        jButton7 = new javax.swing.JButton();
        jButton8 = new javax.swing.JButton();
        jButton9 = new javax.swing.JButton();
        jButton10 = new javax.swing.JButton();
        jButton11 = new javax.swing.JButton();
        jButton12 = new javax.swing.JButton();
        jButton13 = new javax.swing.JButton();
        jButton14 = new javax.swing.JButton();
        jButton15 = new javax.swing.JButton();
        jButton16 = new javax.swing.JButton();
        jButton17 = new javax.swing.JButton();
        jButton18 = new javax.swing.JButton();
        jPanel2 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();


        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAutoRequestFocus(false);
        setBackground(new java.awt.Color(255, 255, 255));


        jPanel1.setOpaque(false);


        jTextField1.setFont(new java.awt.Font("宋体", 0, 36)); // NOI18N
        jTextField1.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
        jTextField1.setText("0");
        jTextField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField1ActionPerformed(evt);
            }
        });


        jButton1.setText("7");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton1MouseReleased(evt);
            }
        });


        jButton2.setText("2");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton2MouseReleased(evt);
            }
        });


        jButton3.setText("9");
        jButton3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton3MouseReleased(evt);
            }
        });
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });


        jButton4.setText("8");
        jButton4.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton4MouseReleased(evt);
            }
        });


        jButton5.setText("6");
        jButton5.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton5MouseReleased(evt);
            }
        });


        jButton6.setText("3");
        jButton6.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton6MouseReleased(evt);
            }
        });
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton6ActionPerformed(evt);
            }
        });


        jButton7.setText("4");
        jButton7.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton7MouseReleased(evt);
            }
        });


        jButton8.setText("1");
        jButton8.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton8MouseReleased(evt);
            }
        });
        jButton8.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton8ActionPerformed(evt);
            }
        });


        jButton9.setText("/");
        jButton9.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton9MouseReleased(evt);
            }
        });


        jButton10.setText(".");
        jButton10.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton10MouseReleased(evt);
            }
        });
        jButton10.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton10ActionPerformed(evt);
            }
        });


        jButton11.setText("0");
        jButton11.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton11MouseReleased(evt);
            }
        });
        jButton11.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton11ActionPerformed(evt);
            }
        });


        jButton12.setText("+");
        jButton12.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton12MouseReleased(evt);
            }
        });
        jButton12.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton12ActionPerformed(evt);
            }
        });


        jButton13.setText("5");
        jButton13.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton13MouseReleased(evt);
            }
        });


        jButton14.setText("*");
        jButton14.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton14MouseReleased(evt);
            }
        });


        jButton15.setText("-");
        jButton15.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton15MouseReleased(evt);
            }
        });


        jButton16.setText("CE");
        jButton16.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton16MouseReleased(evt);
            }
        });


        jButton17.setText("←");
        jButton17.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton17MouseReleased(evt);
            }
        });


        jButton18.setText("=");
        jButton18.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseReleased(java.awt.event.MouseEvent evt) {
                jButton18MouseReleased(evt);
            }
        });
        jButton18.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton18ActionPerformed(evt);
            }
        });


        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(jPanel1Layout.createSequentialGroup()
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jButton8, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                                    .addComponent(jButton13, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton14, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED))
                                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                                    .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton6, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton15, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addGap(10, 10, 10)))
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                .addComponent(jButton18, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGroup(jPanel1Layout.createSequentialGroup()
                            .addGap(41, 41, 41)
                            .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 303, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(jPanel1Layout.createSequentialGroup()
                            .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton9, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton17, javax.swing.GroupLayout.PREFERRED_SIZE, 70, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(jPanel1Layout.createSequentialGroup()
                            .addComponent(jButton11, javax.swing.GroupLayout.PREFERRED_SIZE, 140, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton10, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton12, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 100, Short.MAX_VALUE)
            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(21, 21, 21)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton9, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton17, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton14, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton13, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(jPanel1Layout.createSequentialGroup()
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                                .addComponent(jButton6, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jButton8, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jButton15, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                                    .addComponent(jButton10, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addComponent(jButton12, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE))
                                .addComponent(jButton11, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addComponent(jButton18, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
        );


        jLabel1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Administrator\\Desktop\\8039699682815826838.jpg")); // NOI18N
        jLabel1.setText("jLabel1");


        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 399, Short.MAX_VALUE)
            .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 379, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 341, Short.MAX_VALUE)
            .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel2Layout.createSequentialGroup()
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 331, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
        );


        javax.swing.GroupLayout jLayeredPane1Layout = new javax.swing.GroupLayout(jLayeredPane1);
        jLayeredPane1.setLayout(jLayeredPane1Layout);
        jLayeredPane1Layout.setHorizontalGroup(
            jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 399, Short.MAX_VALUE)
            .addGroup(jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jLayeredPane1Layout.createSequentialGroup()
                    .addGap(0, 0, Short.MAX_VALUE)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(0, 0, Short.MAX_VALUE)))
            .addGroup(jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jLayeredPane1Layout.createSequentialGroup()
                    .addGap(0, 0, Short.MAX_VALUE)
                    .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(0, 0, Short.MAX_VALUE)))
        );
        jLayeredPane1Layout.setVerticalGroup(
            jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 341, Short.MAX_VALUE)
            .addGroup(jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jLayeredPane1Layout.createSequentialGroup()
                    .addGap(0, 0, Short.MAX_VALUE)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(0, 0, Short.MAX_VALUE)))
            .addGroup(jLayeredPane1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jLayeredPane1Layout.createSequentialGroup()
                    .addGap(0, 0, Short.MAX_VALUE)
                    .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(0, 0, Short.MAX_VALUE)))
        );
        jLayeredPane1.setLayer(jPanel1, javax.swing.JLayeredPane.DEFAULT_LAYER);
        jLayeredPane1.setLayer(jPanel2, javax.swing.JLayeredPane.DEFAULT_LAYER);


        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(0, 0, Short.MAX_VALUE)
                .addComponent(jLayeredPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(0, 0, Short.MAX_VALUE)
                .addComponent(jLayeredPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );


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


    private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField1ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField1ActionPerformed


    private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton8ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton8ActionPerformed


    private void jButton11ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton11ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton11ActionPerformed


    private void jButton11MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton11MouseReleased
        // TODO add your handling code here:
     
        setNum("0");
    }//GEN-LAST:event_jButton11MouseReleased


    private void jButton8MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton8MouseReleased
        // TODO add your handling code here:
         setNum("1");
    }//GEN-LAST:event_jButton8MouseReleased


    private void jButton2MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseReleased
        // TODO add your handling code here:
        setNum("2");
    }//GEN-LAST:event_jButton2MouseReleased


    private void jButton6MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton6MouseReleased
        // TODO add your handling code here:
        setNum("3");
    }//GEN-LAST:event_jButton6MouseReleased


    private void jButton7MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton7MouseReleased
        // TODO add your handling code here:
        setNum("4");
    }//GEN-LAST:event_jButton7MouseReleased


    private void jButton13MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton13MouseReleased
        // TODO add your handling code here:
        setNum("5");
    }//GEN-LAST:event_jButton13MouseReleased


    private void jButton5MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton5MouseReleased
        // TODO add your handling code here:
        setNum("6");
    }//GEN-LAST:event_jButton5MouseReleased


    private void jButton1MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseReleased
        // TODO add your handling code here:
        setNum("7");
    }//GEN-LAST:event_jButton1MouseReleased


    private void jButton4MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton4MouseReleased
        // TODO add your handling code here:
        setNum("8");
    }//GEN-LAST:event_jButton4MouseReleased


    private void jButton3MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton3MouseReleased
        // TODO add your handling code here:
        setNum("9");
    }//GEN-LAST:event_jButton3MouseReleased


    private void jButton12MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton12MouseReleased
        // TODO add your handling code here:
        setYEF("+");
    }//GEN-LAST:event_jButton12MouseReleased


    private void jButton15MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton15MouseReleased
        // TODO add your handling code here:
        setYEF("-");
    }//GEN-LAST:event_jButton15MouseReleased


    private void jButton14MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton14MouseReleased
        // TODO add your handling code here:
        setYEF("*");
    }//GEN-LAST:event_jButton14MouseReleased


    private void jButton9MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton9MouseReleased
        // TODO add your handling code here:
        setYEF("/");
    }//GEN-LAST:event_jButton9MouseReleased


    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton3ActionPerformed


    private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton6ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton6ActionPerformed


    private void jButton17MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton17MouseReleased
        // TODO add your handling code here:
        String strText = jTextField1.getText();
        if(strText.length()>1){
            StringBuffer strBuf =new StringBuffer(strText);
            strBuf.deleteCharAt(strBuf.length()-1);
             jTextField1.setText(strBuf.toString());    
        }else{
             jTextField1.setText("0");
        }
    }//GEN-LAST:event_jButton17MouseReleased


    private void jButton16MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton16MouseReleased
        // TODO add your handling code here:
          jTextField1.setText("0");
    }//GEN-LAST:event_jButton16MouseReleased


    private void jButton18MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton18MouseReleased
        // TODO add your handling code here:
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine se = manager.getEngineByName("js");
        Double result = null;
      
        try {
            result = (Double)se.eval("("+jTextField1.getText()+")*1.0");
        } catch (ScriptException ex) {
            Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
            jTextField1.setText("错误,按CE重输");
        }
        
        jTextField1.setText(result.toString());
    }//GEN-LAST:event_jButton18MouseReleased


    private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton12ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton12ActionPerformed


    private void jButton18ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton18ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton18ActionPerformed


    private void jButton10MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton10MouseReleased
        // TODO add your handling code here:
        String strText = jTextField1.getText();
        if (strText.equals("0")) {
            jTextField1.setText(strText + ".");
        } else {
            StringBuffer strBuf = new StringBuffer(jTextField1.getText());
//            if(strBuf.length()<2){
//                jTextField.setText(strBuf+".");
//            }else{


            int temp = 0;
            int i = strBuf.length() - 1;
            while (i > strBuf.lastIndexOf("+") && i > strBuf.lastIndexOf("-") && i > strBuf.lastIndexOf("*") && i > strBuf.lastIndexOf("/")) {


                if (strBuf.charAt(i) == '.') {
                    temp = i;
                    break;
                } else {


                    i--;
                    temp = i;
                }
                System.out.print(i);


            }


            //String str = new String(strBuf);
            if (temp == strBuf.lastIndexOf("+") || temp == strBuf.lastIndexOf("-") || temp == strBuf.lastIndexOf("*") || temp == strBuf.lastIndexOf("/") || temp == 0) {
                jTextField1.setText(strBuf.toString() + ".");
                System.out.print(strBuf.lastIndexOf("+"));
            } else {


                jTextField1.setText(strBuf.toString());
                System.out.print(strBuf.lastIndexOf("+"));
                System.out.print(temp);
            }


        }


  
    }//GEN-LAST:event_jButton10MouseReleased


    private void jButton10ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton10ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jButton10ActionPerformed
                              
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>


        /* Create and display the form */
        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 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 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.JButton jButton8;
    private javax.swing.JButton jButton9;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLayeredPane jLayeredPane1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration//GEN-END:variables


     private void setNum(String str) {


        String strText = jTextField1.getText();


        if (strText.equals("0")) {
            jTextField1.setText(str);
        } else {
            StringBuffer strBuf = new StringBuffer(jTextField1.getText());


            if (strBuf.length() < 3) {
                //String strText2 = new String(strBuf);
                jTextField1.setText(strBuf + str);
            } else {
                char ch1 = strBuf.charAt(strBuf.length() - 1);
                char ch2 = strBuf.charAt(strBuf.length() - 2);
                if (ch1 == '0' && (ch2 == '+' || ch2 == '-' || ch2 == '*' || ch2 == '/')) {
                    strBuf.deleteCharAt(strBuf.length() - 1);
                    String strText1 = new String(strBuf);
                    jTextField1.setText(strText1 + str);
                } else {
                    String strText2 = new String(strBuf);
                    jTextField1.setText(strText2 + str);
                }
            }
        }
    }


    public void setYEF(String str){
        //取出当前显示的内容放到字符串变量strText中
        String strText = jTextField1.getText();
        //判断strText中字符串的最后一位是否为运算符
        int lastRight = strText.length()-1;
        char ch = strText.charAt(lastRight);
        if(ch == '+' || ch == '-' || ch == '*' || ch == '/'){
        //替换最右边的运算符为当前按键str
        String strResult = strText.substring(0, lastRight)+str;
        //steText放回文本框
        jTextField1.setText(strResult);
        }else{
                //strText追加当前str
        jTextField1.setText(strText+str);    
                //strText放回
            }
    }
}