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1.[http://www.javaalmanac.com] – Java¿ª·¢ÕßÄê¼øÒ»ÊéµÄÔÚÏß°æ±¾. ÒªÏë¿ìËٲ鵽ijÖÖJava¼¼ÇɵÄÓ÷¨¼°Ê¾Àý´úÂë, ÕâÊÇÒ»¸ö²»´íµÄÈ¥´¦.
2.[http://www.onjava.com] – O’ReillyµÄJavaÍøÕ¾. ÿÖܶ¼ÓÐÐÂÎÄÕÂ.
3.[http://java.sun.com] – ¹Ù·½µÄJava¿ª·¢ÕßÍøÕ¾ – ÿÖܶ¼ÓÐÐÂÎÄÕ·¢±í.

4.[http://www.developer.com/java] – ÓÉGamelan.com ά»¤µÄJava¼¼ÊõÎÄÕÂÍøÕ¾.
5.[http://www.java.net] – Sun¹«Ë¾Î¬»¤µÄÒ»¸öJavaÉçÇøÍøÕ¾.
6.[http://www.builder.com] – CnetµÄBuilder.comÍøÕ¾ – ËùÓеļ¼ÊõÎÄÕÂ, ÒÔJavaΪÖ÷.
7.[http://www.ibm.com/developerworks/java] – IBMµÄDeveloperworks¼¼ÊõÍøÕ¾; ÕâÊÇÆäÖеÄJava¼¼ÊõÖ÷Ò³.
8.[http://www.javaworld.com] – ×îÔçµÄÒ»¸öJavaÕ¾µã. ÿÖܸüÐÂJava¼¼ÊõÎÄÕÂ.
9.[http://www.devx.com/java] – DevXά»¤µÄÒ»¸öJava¼¼ÊõÎÄÕÂÍøÕ¾.
10.[http://www.fawcette.com/javapro] – JavaProÔÚÏßÔÓÖ¾ÍøÕ¾.
11.[http://www.sys-con.com/java] – Java Developers JournalµÄÔÚÏßÔÓÖ¾ÍøÕ¾.
12.[http://www.javadesktop.org] – λÓÚJava.netµÄÒ»¸öJava×ÀÃæ¼¼ÊõÉçÇøÍøÕ¾.
13.[http://www.theserverside.com] – ÕâÊÇÒ»¸öÌÖÂÛËùÓÐJava·þÎñÆ÷¶Ë¼¼ÊõµÄÍøÕ¾.
14.[http://www.jars.com] – ÌṩJavaÆÀÂÛ·þÎñ. °üÀ¨¸÷ÖÖframeworkºÍÓ¦ÓóÌÐò.
15.[http://www.jguru.com] – Ò»¸ö·Ç³£°ôµÄ²ÉÓÃQ&AÐÎʽµÄJava¼¼Êõ×ÊÔ´ÉçÇø.
16.[http://www.javaranch.com] – Ò»¸öÂÛ̳£¬µÃµ½JavaÎÊÌâ´ð°¸µÄµØ·½£¬³õѧÕߵĺÃÈ¥´¦¡£
17.[http://www.ibiblio.org/javafaq/javafaq.html] – comp.lang.javaµÄFAQÕ¾µã – ÊÕ¼¯ÁËÀ´×Ôcomp.lang.javaÐÂÎÅ×éµÄÎÊÌâºÍ´ð°¸µÄ·ÖÀàĿ¼.
18.[http://java.sun.com/docs/books/tutorial/] – À´×ÔSUN¹«Ë¾µÄ¹Ù·½JavaÖ¸ÄÏ – ¶ÔÓÚÁ˽⼸ºõËùÓеÄjava¼¼ÊõÌØÐԷdz£ÓаïÖú.
19.[http://www.javablogs.com] – »¥ÁªÍøÉÏ×î»îÔ¾µÄÒ»¸öJava BlogÍøÕ¾.
20.[http://java.about.com/] – À´×ÔAbout.comµÄJavaÐÂÎźͼ¼ÊõÎÄÕÂÍøÕ¾.


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public static void main(String[] args)
{
StringBuffer str1 = new StringBuffer("hello");
test(str1);
System.out.println("main : " + str1);
}
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