work4.java

这段源代码介绍了在JAVA中有关类的使用的基础算法

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

class Calculator
{
	int a;
	int b;
	int add()
	{
		return a+b;
	}
	int sub()
	{
		return a-b;
	}
	int mul()
	{
		return a*b;
	}
	double div()
	{
		return a/b;
	}
}
public class work4 {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IOException 
	{
		Calculator rect1;
		rect1=new Calculator();
		BufferedReader buf;
		  String str1,str2;
		  buf=new BufferedReader(new InputStreamReader(System.in));
		  System.out.println("Input  a:");
		  str1=buf.readLine();
		  System.out.println("Input b:");
		  str2=buf.readLine();
		  int c=Integer.parseInt(str1);
		  int d=Integer.parseInt(str2);
		  rect1.a=c;
		  rect1.b=d;
		  System.out.println("the add is"+rect1.add());
		  System.out.println("the sub is"+rect1.sub());
		  System.out.println("the mul is"+rect1.mul());
		  System.out.println("the div is"+rect1.div());
		// TODO 自动生成方法存根

	}

}