testdiv.java

疯狂Java讲义_源码(含Java设计模式CHM

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */

public class TestDiv
{
	public static void main(String[] args) 
	{
		double a = 5.2;
		double b = 3.1;
		double div = a / b;
		//div的值将是1.6774193548387097
		System.out.println(div);
		//输出正无穷大：Infinity
		System.out.println("5除以0.0的结果是:" + 5 / 0.0);
		//输出负无穷大：-Infinity
		System.out.println("-5除以0.0的结果是:" + - 5 / 0.0);
		//下面代码将出现异常 java.lang.ArithmeticException: / by zero
		System.out.println("-5除以0的结果是:" + -5 / 0);
	}
}