Topic: java的困惑 (try & catch) |
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1.java的困惑 (try & catch) | Copy to clipboard |
Posted by: haoyue Posted on: 2004-07-30 10:53 我在学java的文件打操作时遇到下面一段程序不知是何意思,请各位帮我解释一下好吗? Try{ int.byte=system.in.read(); catch(IOException e){ system.out.println(e.toString()); } Try和catch这两个动词是什么意思呀? |
2.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: GWoo Posted on: 2004-07-30 16:05 try和catch用于处理java里面的Exception |
3.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: haoyue Posted on: 2004-07-31 09:55 Try{ int.byte=system.in.read(); catch(IOException e){ system.out.println(e.toString()); } 请问try和catch是怎样处理java里面的Exception的呢?我实是不知道是怎么回事,请大家指教。 |
4.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: ww1ww1 Posted on: 2004-08-06 14:46 try (尝试去做)里面的东西出现异常后,就跑到catch(抓住)那里把这个异常进行处理,try里面的东西就在出现异常的地方停下来不干了。 |
5.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: haoyue Posted on: 2004-08-06 15:21 那这句中system.out.println(e.toString());的e.toString()是把e的错误转成字符串输出吗 |
6.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: joelwx Posted on: 2004-08-07 23:27 是的。 可以考虑使用e.printStackTrace();(不知道拼对没有) 这个可以找到错误源! |
7.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: bsspirit Posted on: 2004-08-08 12:49 也是自己定义一个异常,人工throw一个属于自己的! |
8.Re:java的困惑 [Re: haoyue] | Copy to clipboard |
Posted by: bsspirit Posted on: 2004-08-08 12:50 toString()是一个强制转成字符串的方法。 也可以通过 +"" (加一个空串,实现转换)。 |
9.Re:java的困惑 (try & catch) [Re: haoyue] | Copy to clipboard |
Posted by: why Posted on: 2004-08-08 22:05 haoyue: Please try to get the answers by reading an introduction book to Java. |
10.Re:java的困惑 (try & catch) [Re: haoyue] | Copy to clipboard |
Posted by: haoyue Posted on: 2004-08-08 22:31 谢谢 |
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