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作者 jdk1.5 hashmap put unchecked compile warnning?
andersonmao





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于 2005-05-27 15:23 user profilesend a private message to usersend email to andersonmaosearch all posts byselect and copy to clipboard. 
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I am using jdk1.5 to compile a java source file.[jdk-1_5_0_03-windows-i586-p.exe]
when do this:

Map map=new HashMap();
map.put("abc","def");

the compiler output warning like:

[javac] xxx.java 使用了未经检查或不安全的操作。
[javac] 注意: 要了解详细信息,请使用 -Xlint:unchecked 重新编译。

I think this something about the generic.
When change to this:

Map<Object,Object> map=new HashMap<Object,Object>();
map.put("abc","def");

compiler OK.
Can anybody tell me it is a compiler error or other reason?
Thanks.



个人主页: http://andersonmao.wiseed.com

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3200 jdk1.5 hashmap put unchecked compile warnning? andersonmao 548 2005-05-27 15:23

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