Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JAVA ÍøÉÏʰÒÅ

public String makeStars(int size, char ch) {
    if(size < 1) {
        throw new IllegalArgumentException("size must be greater than 0");
    }
    char[] chs = new char[size];
    for(int i = 0; i < size; i++) {
        chs[i] = ch;
    }
    return new String(ch);
}


Ïà¹ØÎĵµ£º

JPetStore 5.0(iBATIS for java)ÖÐItem.xmlµÄbug

Caused by: java.sql.SQLException: ORA-00918: column ambiguously defined
Caused by: com.ibatis.common.jdbc.exception.NestedSQLException:  
--- The error occurred in com/ibatis/jpetstore/persistence/sqlmapdao/sql/Item.xml. 
--- The error occurred while applying a parameter map.&nbs ......

C++ÓëJavaµÄÇø±ðÏê½â:

1.JavaÔÚÐéÄâ»úÉÏÔËÐР
JavaÔ´´úÂë²¢²»ÊDZ»±àÒë³ÉΪÆÕͨµÄ»úÆ÷´úÂë¡£¶øÊDZ»·­Òë³ÉΪÐéÄâ»ú¿ÉÒÔÖ´ÐеĴúÂë¡£Ò»¸öJava½âÊÍÆ÷×îÖÕÖ´ÐÐÕâЩ´úÂë¡£ÕâÆäÖÐûÓÐÁ¬½ÓµÄ¹ý³Ì£»½âÊÍÔÚÐèÒªµÄʱºò¶¯Ì¬µÄ¼ÓÔØÒ»Ð©Àࣻ 
2.JavaÊÇÍêÈ«ÃæÏò¶ÔÏóµÄ 
JavaÊÇÒ»ÖÖÍêÈ«ÃæÏò¶ÔÏóµÄÓïÑÔ¡£ÕâÒâζ×ÅÄã¶ÔÈκÎÒ»¸öJava¶ÔÏóËù×öµÄ¶ ......

javaµÄ»Øµ÷¼¼Êõdz̸

ÎÒÃǾ­³£»áÓÃSystem.currentTimeMillis()ÔÚʼþ¿ªÊ¼Ç°ºÍ½áÊøºóÉèÖÃÒ»¸ö¿ªÊ¼Ê±¼äºÍ½áÊøÊ±¼ä£¬ÓÃËûÃǵIJî×÷Ϊ³ÌÐòÖ´ÐеÄʱ¼ä¡£
ÎÒÃDz»·Á¶¨ÒåÒ»¸ö½Ó¿ÚÓÃjava»Øµ÷À´ÊµÏÖ¶¯Ì¬¼ÆËã¡£
½Ó¿Ú¶¨Ò壺
package com.hd123.h5.ejb.verctrl;
public interface CallBack {
  public void callBack();
}
È»ºóÊÇʵÏÖÕâ¸ö½Ó¿Ú
pac ......

JVMÐéÄâ»ú»ù´¡£ºJava¶ÔÏó´óСÓëÀàÐÍÏê½â

»ù±¾Êý¾ÝµÄÀàÐ͵ĴóСÊǹ̶¨µÄ£¬ÕâÀï¾Í²»¶à˵ÁË¡£¶ÔÓÚ·Ç»ù±¾ÀàÐ͵ÄJava¶ÔÏ󣬯ä´óС¾ÍÖµµÃÉÌȶ¡£
ÔÚJavaÖУ¬Ò»¸ö¿ÕObject¶ÔÏóµÄ´óСÊÇ8byte£¬Õâ¸ö´óСֻÊDZ£´æ¶ÑÖÐÒ»¸öûÓÐÈκÎÊôÐԵĶÔÏóµÄ´óС¡£¿´ÏÂÃæÓï¾ä£º
Object ob = new Object(); 
ÕâÑùÔÚ³ÌÐòÖÐÍê³ÉÁËÒ»¸öJava¶ÔÏóµÄÉúÃü£¬µ«ÊÇËüËùÕ¼µÄ ......

JavaÐéÄâ»ú»ù´¡£º¶ÑÓëÕ»¸ÅÄîÏê½â

JavaÐéÄâ»úÖУ¬Êý¾ÝÀàÐÍ¿ÉÒÔ·ÖΪÁ½Àࣺ»ù±¾ÀàÐͺÍÒýÓÃÀàÐÍ¡£»ù±¾ÀàÐ͵ıäÁ¿±£´æÔ­Ê¼Öµ£¬¼´£ºËû´ú±íµÄÖµ¾ÍÊÇÊýÖµ±¾Éí£»¶øÒýÓÃÀàÐ͵ıäÁ¿±£´æÒýÓÃÖµ¡£“ÒýÓÃÖµ”´ú±íÁËij¸ö¶ÔÏóµÄÒýÓ㬶ø²»ÊǶÔÏó±¾Éí£¬¶ÔÏó±¾Éí´æ·ÅÔÚÕâ¸öÒýÓÃÖµËù±íʾµÄµØÖ·µÄλÖá£
»ù±¾ÀàÐͰüÀ¨£ºbyte, short, int, long, char, float, double ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ