面向对象(throws和throw的区别)
/**
* Created by Administrator on 2014/9/29.
*
* throws和throw的区别
*
* throws使用在函数上,throw使用在函数内
*
* throws后面跟的是异常类,可以跟多个,用逗号连接
* throw后面跟的是异常对象
*/
//copyright©liupengcheng
//http://www.cnblogs.com/liupengcheng
class fushuException extends Exception
{
private int value;
fushuException(String msg,int value)
{
super(msg);
this.value = value;
}
public int getValue()
{
return value;
}
}
//copyright©liupengcheng
//http://www.cnblogs.com/liupengcheng
class Demo5
{
int div(int a,int b) throws fushuException //fushuException 自定义负数异常
{
if(b<0)
throw new fushuException("出现了除数是负数的情况",b);
return a/b;
}
}
//copyright©liupengcheng
//http://www.cnblogs.com/liupengcheng
public class ExceptionDemo3 {
public static void main(String [] args)
{
Demo5 d = new Demo5();
try
{
int x = d.div(4,-1);
System.out.println("x"+ x);
}
catch(fushuException e)
{
System.out.println(e.toString());
System.out.println("出现问题的数值是"+ e.getValue());
}
System.out.println("over");
}
}
//copyright©liupengcheng
//http://www.cnblogs.com/liupengcheng