e1401.java

java小程序

import java.io.*;
class MyException extends Exception
{
public String toString()
{
return ("123Exception!");
}
}

public class E1401
{
public static void main(String args[])
{
String str;
try
{
BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
str=in.readLine();//也可以直接str=args[0];
if(str.equals("123")==true) throw new MyException();
else
System.out.println("没有Exception!");
}
catch(MyException e)
{
System.out.println(e.toString());
}
catch (IOException e)
{
e.printStackTrace();
}
}
}