Java开发网 - (DatagramSocket)抛出异常问题！

Topic: (DatagramSocket)抛出异常问题！

1.(DatagramSocket)抛出异常问题！

Posted by: wqq0712
Posted on: 2006-08-16 17:20


......
List  lst=new List(6);
DatagramSocket ds;
public Chat()
{
   try{ds=new DatagramSocket(3000);}
   catch(Exception ex){ex.printStackTrace();}
}
....

2个构造方法:
public List(int rows)
     throws HeadlessException

public DatagramSocket(int port)
               throws SocketException

2个都是有可能出现异常的~~那为什么只对DatagramSocket构造方法进行异常处理~~而List不处理呢~~而且编译运行结果还不会出错~~当然如果没对DatagramSocket做异常处理的话~是会出现编译错误的！
请问是怎么回事呢？

2.Re:(DatagramSocket)抛出异常问题！ [Re: wqq0712]	Copy to clipboard
Posted by: why Posted on: 2006-08-16 19:26 HeadlessException is a RuntimeException, an unchecked exception, i.e. exceptions that are not subject to the "Catch or Specify Requirement"; SocketException is not.

3.Re:(DatagramSocket)抛出异常问题！ [Re: wqq0712]	Copy to clipboard
Posted by: wqq0712 Posted on: 2006-08-17 11:47 Thank you