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

JAVA¹æ·¶Ñ§Ï°——String×ÖÃæ³£Á¿

package testPackage;
class Test {
public static void main(String[] args) {
String hello = "Hello", lo = "lo";
System.out.print((hello == "Hello") + " ");
System.out.print((Other.hello == hello) + " ");
System.out.print((other.Other.hello == hello) + " ");
System.out.print((hello == ("Hel"+"lo")) + " "); //(1)
System.out.print((hello == ("Hel"+lo)) + " "); //(2)
System.out.println(hello == ("Hel"+lo).intern());
}
}
class Other { static String hello = "Hello"; }
package other;
public class Other { static String hello = "Hello"; }
ÔËÐнá¹ûÈçÏ£º
true true true true false true 
½á¹û½âÊÍ£º
1. ËùÓÐString×ÖÃæÁ¿£¬²»¹ÜÆäËùÔÚµÄclassºÍpackage£¬¶¼ÊÇͬһ¸öString¶ÔÏóµÄÒýÓÃ
2. ¶ÔÓÚ³£Á¿±í´ïʽ¼ÆËãµÄString£¬¶¼ÊÇÔÚ±àÒëÆÚ¼ä¼ÆËãµÄ£¬±»µ±×÷String×ÖÃæÁ¿¿´´ý¡£ÀýÈç(1)ÐÐËùÔڵĴúÂë
3. ¶ÔÓÚÔÚÔËÐÐÆÚÁ¬½ÓµÄString£¬¶¼ÊÇд´½¨µÄ£¬Òò´Ë²»Ïàͬ¡£ÀýÈç(2)ÐÐËùÔڵĴúÂë


Ïà¹ØÎĵµ£º

¡¾×ª¡¿¸øJava°üȡһ¸ö¶ÀÒ»ÎÞ¶þµÄÃû×Ö

À´Ô´£ºhttp://bbs.hackline.net/thread-3620-1-1.html
Òþ²Ø¾ßÌåʵÏÖÊÇJavaÓïÑÔµÄÖ÷ÒªÌØµãÖ®Ò»¡£ÕýÊÇÒòΪÕâ¸öÔ­Òò£¬ËùÒÔJavaÓïÑÔµÄÒÆÖ²ÐÔ¾ÍÌØ±ðºÃ¡£ÈçÓиö³ÌÐòÔ±±àдÁËÒ»¸öʵÏÖËæ»úÊýµÄ³ÌÐò¿â£¬ÄÇôÆäËû
³ÌÐò¿ª·¢ÈËÔ±Ö»ÐèÒªÖªµÀÕâ¸ö³ÌÐò¿âÐèÒª´«ÈëÄÇЩ²ÎÊý£¬¾Í¿ÉÒÔʹÓÃÕâ¸öÀà¡£ÏÖÔÚÎÞÂÛÊÇÍøÉÏ»¹ÊÇÆ½Ê±µÄ¹¤×÷ÖУ¬ÓкܶàÏÖ³É ......

¼ò µ¥ µÄ Java³Ì Ðò

http://www.sdau.edu.cn/support/html/java03.htm 
1.3 ¼ò µ¥ µÄ Java³Ì Ðò
ÏÂ Ãæ ÎÒ ÃÇ ÏÈ ½é ÉÜ Á½ ¸ö ¼ò µ¥ µÄ Java³Ì Ðò ,²¢ ¶Ô Æä ½ø ÐÐ ·Ö Îö¡£
Àý 1.1.
public class HelloWorldApp { //an application
public static void main (String args[ ]){
System.out.println("Hello World!");
}
}
± ......

Java Type VS Hibernate Type

Java Class Attribute Type         Hibernate Type               Possible SQL Type-Vendor Specific
Integer, int, long short &n ......

JAVA¼ÓÃÜËã·¨

MD5Ëã·¨ÊÇÒ»Öַdz£ÓÅÐãµÄ¼ÓÃÜËã·¨¡£
MD5¼ÓÃÜËã·¨ÌØµã£ºÁé»îÐÔ¡¢²»¿É»Ö¸´ÐÔ¡£
       ½éÉÜMD5¼ÓÃÜËã·¨»ù±¾Çé¿öMD5µÄÈ«³ÆÊÇMessage-Digest Algorithm 5£¬ÔÚ90Äê´ú³õÓÉMITµÄ¼ÆËã»ú¿ÆÑ§ÊµÑéÊÒºÍRSA Data Security Inc·¢Ã÷£¬¾­MD2¡¢MD3ºÍMD4·¢Õ¹¶øÀ´¡£
Message-Digest·ºÖ¸×Ö½Ú´®(Message)µÄHas ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ