Java开发网 - 求助 (编一个只能加减乘除的计算器)

Topic: 求助 (编一个只能加减乘除的计算器)

1.求助 (编一个只能加减乘除的计算器)	Copy to clipboard
Posted by: 晨辰 Posted on: 2004-11-25 09:41 我是新学JAVA的，老师叫我们编一个只能加减乘除的计算器，可是我一直没好好学，做不出来。那位好心人帮帮忙。感激不尽

2.Re:求助 [Re: 晨辰]	Copy to clipboard
Posted by: 牛老板 Posted on: 2004-11-25 09:53 google " java 计算器"

3.Re:求助 [Re: 晨辰]	Copy to clipboard
Posted by: april518 Posted on: 2004-11-26 16:02 论坛上好像有个大哥作过这个东西，你可以搜一下．

4.Re:求助 [Re: 牛老板]	Copy to clipboard
Posted by: 晨辰 Posted on: 2004-12-02 08:24 谢谢

5.Re:求助 (编一个只能加减乘除的计算器) [Re: 晨辰]

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Posted by: battlekiller
Posted on: 2005-01-09 10:17

import java.awt.*;
import java.awt.event.*;
public class compter extends Frame{
Frame fra;
Button b[4];
String s[]={"+","-","*","/"};
String accept,a2;
TextField t;
int number1,number2;

public compter()
{fra=new Frame("计算器");
fra.setSize(200,200);
fra.setLayout(new FlowLayout());
//初始化按扭
for(int i=0;i<4;i++)
{
b[i]=new Button(s[i]);
}//end
t=new TextField(20);
//添加组件
fra.add Phone

;
fra.add(b1);
fra.add(b2);
fra.add(b3);
fra.add(b4);
//accept first number
accept=t.getText();
number1=Integer.praseInt(accept);
//添加触发事件1
b1.addActionListener(new ActionListener(){
public void Performed(ActionEvent e){
a2=t.getText();
number2=Integer.praseInt(a2);
number2=number2+number1;
t.setText(number2);
}
});
//添加触发事件2
b2.addActionListener(new ActionListener(){
public void Performed(ActionEvent e){
a2=t.getText();
number2=Integer.praseInt(a2);
number2=number2-number1;
t.setText(number2);
}
});
}
//添加触发事件3
b3.addActionListener(new ActionListener(){
public void Performed(ActionEvent e){
a2=t.getText();
number2=Integer.praseInt(a2);
number2=number2*number1;
t.setText(number2);
}
});
//添加触发事件4
b4.addActionListener(new ActionListener(){
public void Performed(ActionEvent e){
a2=t.getText();
number2=Integer.praseInt(a2);
number2=number2/number1;
t.setText(number2);
}
});
public static void main(String[] args){
compter c=new compter();
}

}