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import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

import java.util.Scanner;

//import java.util.Scanner;

public class Jisuanji {

JLabel JLabel1;

JLabel JLabel2;

JLabel JLabel3;//標(biāo)簽

JFrame mainJFrame;//布局

Container con;//用來(lái)獲取內(nèi)容面板的引用

JButton loginBtn,cancelBtn,Btn1,Btn2;//按鈕

JTextField userText,userText1;//文本框

HandleAction handleAction;//按鈕事件監(jiān)聽器和文本框回車事件監(jiān)聽器

public class HandleAction implements ActionListener{

public void actionPerformed(ActionEvent e){

//userText.setText("");

String msg,msg1;//顯示信息

Double num1,num2,jieguo;

msg=userText.getText();

msg1=userText1.getText();

Jisuanqi People;

People=new Jisuanqi();

People.setNum1(Double.valueOf(msg).doubleValue());

People.setNum2(Double.valueOf(msg1).doubleValue());//獲取輸入文本

num1=People.getNum1();

num2=People.getNum2();

jieguo=People.getJieguo();

if(e.getSource()==loginBtn){

msg="你輸入的數(shù)a："+num1+"\n你輸入的數(shù)b："+num2+"\n計(jì)算結(jié)果："+(num1+num2);

JOptionPane.showMessageDialog(mainJFrame,msg);

}

else if(e.getSource()==cancelBtn){

msg="你輸入的數(shù)a："+num1+"\n你輸入的數(shù)b："+num2+"\n計(jì)算結(jié)果："+(num1-num2);

JOptionPane.showMessageDialog(mainJFrame,msg);

}

else if(e.getSource()==Btn1){

msg="你輸入的數(shù)a："+num1+"\n你輸入的數(shù)b："+num2+"\n計(jì)算結(jié)果："+(num1*num2);

JOptionPane.showMessageDialog(mainJFrame,msg);

}

else if(e.getSource()==Btn2){

msg="你輸入的數(shù)a："+num1+"\n你輸入的數(shù)b："+num2+"\n計(jì)算結(jié)果："+(num1/num2);

JOptionPane.showMessageDialog(mainJFrame,msg);

}

}

} public Jisuanji(){

handleAction=new HandleAction();

mainJFrame=new JFrame("計(jì)算器");

JLabel1=new JLabel("輸入a");

JLabel2=new JLabel("輸入b");

userText=new JTextField();

userText.setColumns(5);

userText1=new JTextField();

userText1.setColumns(5);

userText.addActionListener(handleAction);

loginBtn=new JButton("加");

loginBtn.addActionListener(handleAction);

cancelBtn=new JButton("減");

cancelBtn.addActionListener(handleAction);

Btn1=new JButton("乘");

Btn1.addActionListener(handleAction);

Btn2=new JButton("除");

Btn2.addActionListener(handleAction);

con=mainJFrame.getContentPane();

con.setLayout(new FlowLayout());

con.add(JLabel1);

con.add(userText);

con.add(JLabel2);

con.add(userText1);

con.add(loginBtn);

con.add(cancelBtn);

con.add(Btn1);

con.add(Btn2);

mainJFrame.setSize(300,300);

mainJFrame.setVisible(true);

mainJFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

} public static void main(String args[]){

new Jisuanji();

}

}

class Jisuanqi{

double num1,num2,jieguo;

char z;

Jisuanqi(){

}

Jisuanqi(Double num1,Double num2){

this.num1=num1;

this.num2=num2;

}

void setNum1(Double num1){

this.num1=num1;

}

void setNum2(Double num2){

this.num2=num2;

}

Double getNum1(){

return num1;

}

Double getNum2(){

return num2;

}

Double getJieguo(){

return jieguo;

} }

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