Netbean中的Java计算器“；未报告的异常ScriptException“；

您好，这是我用java编写的计算器错误的替换帖子，用户“气垫船充满鳗鱼”我不想给您带来不便，请放弃这篇帖子。我将发布带有错误的代码。问题代码是在这里写的这一部分。再次感谢所有愿意提供帮助的人，并希望一旦成功，它将帮助其他人起步。欢迎对代码的编写方式提出建设性的批评

ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
String tarea = textarea.getText();
double display = (double) engine.eval(tarea);
String display2 = String.valueOf(display);
textarea.setText(display2);     

通过加倍，错误读数为

"unreported exception ScriptException; must be caught or declared to be thrown
......"

当我运行计算器时，我得到这些错误

    Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Uncompilable source code - unreported exception javax.script.ScriptException; must be caught or declared to be thrown
        at my.harrycalc.HarryCalc.equalsActionPerformed(HarryCalc.java:337)
        at my.harrycalc.HarryCalc.access$1300(HarryCalc.java:17)
        at my.harrycalc.HarryCalc$14.actionPerformed(HarryCalc.java:150)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
        at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
        at java.awt.Component.processMouseEvent(Component.java:6505)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
        at java.awt.Component.processEvent(Component.java:6270)
        at java.awt.Container.processEvent(Container.java:2229)
        at java.awt.Component.dispatchEventImpl(Component.java:4861)
        at java.awt.Container.dispatchEventImpl(Container.java:2287)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
        at java.awt.Container.dispatchEventImpl(Container.java:2273)
        at java.awt.Window.dispatchEventImpl(Window.java:2719)
        at java.awt.Component.dispatchEvent(Component.java:4687)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
        at java.awt.EventQueue.access$200(EventQueue.java:103)
        at java.awt.EventQueue$3.run(EventQueue.java:694)
        at java.awt.EventQueue$3.run(EventQueue.java:692)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
        at java.awt.EventQueue$4.run(EventQueue.java:708)
        at java.awt.EventQueue$4.run(EventQueue.java:706)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

这是整个应用程序代码

   /*
 * 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 my.harrycalc;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
import javax.script.ScriptException;
/**
 *
 * @author William Lane
 */
public class HarryCalc extends javax.swing.JFrame {

    /**
     * Creates new form HarryCalc
     */
    public HarryCalc() {
        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">                          
    private void initComponents() {

        jToggleButton1 = new javax.swing.JToggleButton();
        textarea = new javax.swing.JTextField();
        one = new javax.swing.JToggleButton();
        two = new javax.swing.JToggleButton();
        three = new javax.swing.JToggleButton();
        four = new javax.swing.JToggleButton();
        five = new javax.swing.JToggleButton();
        nine = new javax.swing.JToggleButton();
        eight = new javax.swing.JToggleButton();
        seven = new javax.swing.JToggleButton();
        six = new javax.swing.JToggleButton();
        zero = new javax.swing.JToggleButton();
        times = new javax.swing.JToggleButton();
        divide = new javax.swing.JToggleButton();
        equals = new javax.swing.JToggleButton();
        minus = new javax.swing.JToggleButton();
        plus = new javax.swing.JToggleButton();
        about = new javax.swing.JToggleButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jToggleButton1.setText("Close");
        jToggleButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jToggleButton1ActionPerformed(evt);
            }
        });

        one.setText("1");
        one.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                oneActionPerformed(evt);
            }
        });

        two.setText("2");
        two.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                twoActionPerformed(evt);
            }
        });

        three.setText("3");
        three.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                threeActionPerformed(evt);
            }
        });

        four.setText("4");
        four.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                fourActionPerformed(evt);
            }
        });

        five.setText("5");
        five.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                fiveActionPerformed(evt);
            }
        });

        nine.setText("9");
        nine.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                nineActionPerformed(evt);
            }
        });

        eight.setText("8");
        eight.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                eightActionPerformed(evt);
            }
        });

        seven.setText("7");
        seven.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                sevenActionPerformed(evt);
            }
        });

        six.setText("6");
        six.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                sixActionPerformed(evt);
            }
        });

        zero.setText("0");
        zero.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                zeroActionPerformed(evt);
            }
        });

        times.setText("*");
        times.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                timesActionPerformed(evt);
            }
        });

        divide.setText("/");
        divide.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                divideActionPerformed(evt);
            }
        });

        equals.setText("=");
        equals.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                equalsActionPerformed(evt);
            }
        });
        equals.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyReleased(java.awt.event.KeyEvent evt) {
                equalsKeyReleased(evt);
            }
        });

        minus.setText("-");
        minus.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                minusActionPerformed(evt);
            }
        });

        plus.setText("+");
        plus.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                plusActionPerformed(evt);
            }
        });

        about.setText("About");
        about.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                aboutActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                            .addGroup(layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                    .addComponent(one, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(two, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(three, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(four, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(five, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(six)
                                    .addComponent(seven)
                                    .addComponent(eight)
                                    .addComponent(nine)
                                    .addComponent(zero))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(plus, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(equals, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(divide, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(times, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(minus, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
                            .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                                .addComponent(about)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jToggleButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addComponent(textarea))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(textarea, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(one)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(two)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(three)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(four)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(five))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(six)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(seven)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(eight)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(nine)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(zero))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(plus)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(minus)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(times)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(divide)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(equals)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jToggleButton1)
                    .addComponent(about))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                        

    private void jToggleButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                               
        System.exit(0);
    }                                              

    private void aboutActionPerformed(java.awt.event.ActionEvent evt) {                                      
        // TODO add your handling code here:
    }                                     

    private void oneActionPerformed(java.awt.event.ActionEvent evt) {                                    
     textarea.setText(textarea.getText() + "1");       
    }                                   

    private void twoActionPerformed(java.awt.event.ActionEvent evt) {                                    
       textarea.setText(textarea.getText() + "2");
    }                                   

    private void threeActionPerformed(java.awt.event.ActionEvent evt) {                                      
       textarea.setText(textarea.getText() + "3");
    }                                     

    private void fourActionPerformed(java.awt.event.ActionEvent evt) {                                     
       textarea.setText(textarea.getText() + "4");
    }                                    

    private void fiveActionPerformed(java.awt.event.ActionEvent evt) {                                     
               textarea.setText(textarea.getText() + "5");
    }                                    

    private void sixActionPerformed(java.awt.event.ActionEvent evt) {                                    
       textarea.setText(textarea.getText() + "6");
    }                                   

    private void sevenActionPerformed(java.awt.event.ActionEvent evt) {                                      
               textarea.setText(textarea.getText() + "7");
    }                                     

    private void eightActionPerformed(java.awt.event.ActionEvent evt) {                                      
       textarea.setText(textarea.getText() + "8");
    }                                     

    private void nineActionPerformed(java.awt.event.ActionEvent evt) {                                     
       textarea.setText(textarea.getText() + "9");
    }                                    

    private void zeroActionPerformed(java.awt.event.ActionEvent evt) {                                     
       textarea.setText(textarea.getText() + "0");
    }                                    

    private void plusActionPerformed(java.awt.event.ActionEvent evt) {                                     
       textarea.setText(textarea.getText() + "+");
    }                                    

    private void minusActionPerformed(java.awt.event.ActionEvent evt) {                                      
       textarea.setText(textarea.getText() + "-");
    }                                     

    private void timesActionPerformed(java.awt.event.ActionEvent evt) {                                      
       textarea.setText(textarea.getText() + "*");
    }                                     

    private void divideActionPerformed(java.awt.event.ActionEvent evt) {                                       
       textarea.setText(textarea.getText() + "/");
    }                                      

    private void equalsActionPerformed(java.awt.event.ActionEvent evt) {                                       
               ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
String tarea = textarea.getText();




double display = (double) engine.eval(tarea);
String display2 = String.valueOf(display);
textarea.setText(display2);     
    }                                      

    private void equalsKeyReleased(java.awt.event.KeyEvent evt) {                                   
        // TODO add your handling code here:
    }                                  

    /**
     * @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(HarryCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(HarryCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(HarryCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(HarryCalc.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 HarryCalc().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JToggleButton about;
    private javax.swing.JToggleButton divide;
    private javax.swing.JToggleButton eight;
    private javax.swing.JToggleButton equals;
    private javax.swing.JToggleButton five;
    private javax.swing.JToggleButton four;
    private javax.swing.JToggleButton jToggleButton1;
    private javax.swing.JToggleButton minus;
    private javax.swing.JToggleButton nine;
    private javax.swing.JToggleButton one;
    private javax.swing.JToggleButton plus;
    private javax.swing.JToggleButton seven;
    private javax.swing.JToggleButton six;
    private javax.swing.JTextField textarea;
    private javax.swing.JToggleButton three;
    private javax.swing.JToggleButton times;
    private javax.swing.JToggleButton two;
    private javax.swing.JToggleButton zero;
    // End of variables declaration                   
}

/*
*要更改此许可证标题，请在“项目属性”中选择“许可证标题”。
*要更改此模板文件，请选择工具|模板
*然后在编辑器中打开模板。
*/
包my.harrycalc；
导入java.util.logging.Level；
导入java.util.logging.Logger；
导入javax.script.ScriptEngineManager；
导入javax.script.ScriptEngine；
导入javax.script.ScriptException；
/**
*
*@作者威廉·莱恩
*/
公共类HarryCalc扩展了javax.swing.JFrame{
/**
*创建新表单HarryCalc
*/
公共HarryCalc（）{
初始化组件（）；
}
/**
*从构造函数中调用此方法来初始化表单。
*警告：不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告（“未选中”）
//                           
私有组件（）{
jToggleButton1=newjavax.swing.JToggleButton（）；
textarea=newjavax.swing.JTextField（）；
one=newjavax.swing.JToggleButton（）；
two=newjavax.swing.JToggleButton（）；
three=newjavax.swing.JToggleButton（）；
four=newjavax.swing.JToggleButton（）；
five=newjavax.swing.JToggleButton（）；
nine=newjavax.swing.JToggleButton（）；
八=新的javax.swing.JToggleButton（）；
seven=newjavax.swing.JToggleButton（）；
six=newjavax.swing.JToggleButton（）；
zero=newjavax.swing.JToggleButton（）；
times=newjavax.swing.JToggleButton（）；
divide=newjavax.swing.JToggleButton（）；
equals=newjavax.swing.JToggleButton（）；
减号=newjavax.swing.JToggleButton（）；
plus=newjavax.swing.JToggleButton（）；
about=newjavax.swing.JToggleButton（）；
setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）；
jToggleButton1.setText（“关闭”）；
jToggleButton1.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
jToggleButton1ActionExecuted（evt）；
}
});
一、setText（“1”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行一项行动（evt）；
}
});
2.setText（“2”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行两项操作（evt）；
}
});
三、setText（“3”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行三项行动（evt）；
}
});
四、setText（“4”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行四项操作（evt）；
}
});
五、setText（“5”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行的五项行动（evt）；
}
});
9.setText（“9”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行了9次（evt）；
}
});
八、setText（“8”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
已执行的八项测试（evt）；
}
});
七、setText（“7”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行了七次（evt）；
}
});
6.setText（“6”）；
addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
已执行的六项操作（evt）；
}
});
0.setText（“0”）；
zero.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行零动作（evt）；
}
});
times.setText（“*”）；
times.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行时间（evt）；
}
});
除以.setText（“/”）；
divide.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行的分割操作（evt）；
}
});
等于.setText（“=”）；
equals.addActionListener（新java.awt.event.ActionListener（）{
public void actionPerformed（java.awt.event.ActionEvent evt）{
执行的同等行动（evt）；
}
});
equals.addKeyListener（新java.awt.event.KeyAdapter（）{
公共空间