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http://www.javaalmanac.com - Java¿ª·¢ÕßÄê¼øÒ»ÊéµÄÔÚÏß°æ±¾£¬ÏëÒª¿ìËٲ鵽ijÖÖJava¼¼ÇɵÄÓ÷¨¼°Ê¾ÀýµÄ´úÂëÕâÊÇÒ»¸ö²»´íµÄÈ¥´¦.
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http://java.sun.com - ¹Ù·½µÄJava¿ª·¢ÕßÍøÕ¾ - ÿÖܶ¼ÓÐÐÂÎÄÕ·¢±í.
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http://www.builder.com - CnetµÄBuilder.comÍøÕ¾ - ËùÓеļ¼ÊõÎÄÕÂ, ÒÔJavaΪÖ÷.
http://www.ibm.com/developerworks/java - IBMµÄDeveloperworks¼¼ÊõÍøÕ¾; ÕâÊÇÆäÖеÄJava¼¼ÊõÖ÷Ò³.
http://www.javaworld.com - ×îÔçµÄÒ»¸öJavaÕ¾µã. ÿÖܸüÐÂJava¼¼ÊõÎÄÕÂ.
http://www.devx.com/java - DevXά»¤µÄÒ»¸öJava¼¼ÊõÎÄÕÂÍøÕ¾.
http://www.fawcette.com/javapro - JavaProÔÚÏßÔÓÖ¾ÍøÕ¾
http://www.sys-con.com/java - Java Developers JournalµÄÔÚÏßÔÓÖ¾ÍøÕ¾.
http://www.javadesktop.org - λÓÚJava.netµÄÒ»¸öJava×ÀÃæ¼¼ÊõÉçÇøÍøÕ¾.
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http://www.jars.com - ÌṩJavaÆÀÂÛ·þÎñ. °üÀ¨¸÷ÖÖframeworkºÍÓ¦ÓóÌÐò.
http://www.jguru.com - Ò»¸ö·Ç³£°ôµÄ²ÉÓÃQ&AÐÎʽµÄJava¼¼Êõ×ÊÔ´ÉçÇø.
http://www.javaranch.com - Ò»¸öÂÛ̳£¬µÃµ½JavaÎÊÌâ´ð°¸µÄµØ·½£¬³õѧÕߵĺÃÈ¥´¦¡£
http://www.ibiblio.org/javafaq/javafaq.html - comp.lang.javaµÄFAQÕ¾µã - ÊÕ¼¯ÁËÀ´×Ôcomp.lang.javaÐÂÎÅ×éµÄÎÊÌâºÍ´ð°¸µÄ·ÖÀàĿ¼.
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1.±à³Ì½ç×îÖøÃûµÄÒ»¾ä»°“Hello world!”,ÈκÎÒ»¸ö³ÌÐòÔ±Æð²½Ê±±ØÓöµÄÓï¾ä
public class HelloWorld {

public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("Hello World!");
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