java程序实现从命令行接收多个数字实现加减乘除运算

       首先新建一个包，在包中新建一个addition，通过import javax.swing.JOptionPane语句实现窗口界面。之后在定义字符串类型两个变量，定义int类型的两个变量存放字符串转化为整形的变量，sum,cha,ji,shang分别用来 存放加减乘除后的结果

number1 = Integer.parseInt( firstNumber );
number2 = Integer.parseInt( secondNumber );这两个语句把从键盘输入的值赋给number1，number2,

sum = number1 + number2;实现两数相加
cha=number1 - number2;实现两数相减
ji=number1 *number2;实现两数相乘
shang=number1 /number2;实现两数相除最后输出运算结果退出2017-10-0710:12:46

package addtion;
//信 1605-3 张运涛 20163432
//An addition program

import javax.swing.JOptionPane; // import class JOptionPane

public class Addition {
public static void main( String args[] )
{
String firstNumber, // first string entered by user
secondNumber; // second string entered by user
int number1, // first number to add
number2, // second number to add
sum, // sum of number1 and number2
cha, //cha of number1 and number2
ji, // ji of number1 and number2
shang; //shang of number1 and number2
// read in first number from user as a string
firstNumber =
JOptionPane.showInputDialog( "Enter first integer" );

// read in second number from user as a string
secondNumber =
JOptionPane.showInputDialog( "Enter second integer" );

// convert numbers from type String to type int
number1 = Integer.parseInt( firstNumber );
number2 = Integer.parseInt( secondNumber );

// add the numbers
sum = number1 + number2;
cha=number1 - number2;
ji=number1 *number2;
shang=number1 /number2;
// display the results
JOptionPane.showMessageDialog(                                

 

null, "The sum is " + sum, "Results",
JOptionPane.PLAIN_MESSAGE );
JOptionPane.showMessageDialog(
null, "The cha is " + cha, "Results",
JOptionPane.PLAIN_MESSAGE );
JOptionPane.showMessageDialog(
null, "The ji is " + ji, "Results",
JOptionPane.PLAIN_MESSAGE );
JOptionPane.showMessageDialog(
null, "The shang is " + shang, "Results",
JOptionPane.PLAIN_MESSAGE );
System.exit( 0 ); // terminate the program
}
}