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Myeclipse±¨Could not create Java VM

Myeclipse±¨Could not create Java VM
 
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Myeclipse6.0£¬tomcat6.0, 2GÄÚ´æ
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ʹÓà java ½øÐÐÎļþ¿½±´ ÏàÐźܶàÈ˶¼»áÓÃ,,²»¹ýЧÂÊÉÏÊÇ·ñ×îºÃÄØ?
×î½ü¿´ÁË¿´NIO¾ö¶¨ÊÔÒ»ÊÔ java  NIO µ½µ×ÓÐʲôÐÔÄܵÄÌáÉý.
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 public static long forJava(File f1,File f2) throws Exception{
  long time=new Date().getTime();
  int length=2097152;
  FileInp ......

javaÁ¬½ÓOracle

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    ÎÒÓõÄÊÇOracle 10 express edition°æ±¾£¬Õâ¸ö°æ±¾½¨Êý¾Ý¿âͦÂé·³µÄ£¬ËùÒÔÎÒ¾ÍÖ±½ÓÔÚËü×Ô´øµÄÊý¾Ý¿âXEϽ¨±íÁË¡£
    ×¢Ò⣺½¨±í¿ÉÒ»¶¨Òª ......

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Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/class
Caused by: java.lang.ClassNotFoundException: HelloWorld.class
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    ......

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public class VariableParameter {
public static void main(String[] args) {
System.out.println(add(1,2));
System.out.println(add(1,2,3,4));
}
public static int add(int x,int...args){
     //ÊÇ3¸öµã£¬args±ØÐëÊÇ ......
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