jdk1.7 ×Ö·û´®³£Á¿³Ø
openJDK1.7ÒÔÉϵİ汾String×Ö·û´®³£Á¿³ØÊÇÔÚ¶ÑÉÏÂð...
»á¡£Ê×ÏÈ£¬ÎÒÃÇÒªÑϸñÇø·ÖJVMS¹æ¶¨µÄÄÚ´æÇøÓòºÍHotSpotʵÏÖµÄÄÚ´æ¡£¾ÍJVMS¹æ¶¨²¿·ÖÀ´Ëµ£¬ÔËÐÐʱ³£Á¿³Ø£¨Run-Time Constant Pool£©ÊÇJVMS 2.5¹æ¶¨...
javaÖеÄString a = new String("a")´´½¨µÄÊǼ¸¸ö¶ÔÏó...
ÔÚjdk1.7°æ±¾Ö®Ç°£¬³£Á¿³Ø´æÔÚÓÚ·½·¨Çø£¬·½·¨ÇøÊǶѵÄÒ»¸öÂß¼²¿·Ö£¬ËûÓÐÒ»¸öÃû×Ö½Ð×ö·Ç¶Ñ¡£1.7°æ±¾°Ñ×Ö·û´®³£Á¿³Ø·Åµ½Á˶ÑÖС£¶øÔÚ1.8ÒÔºó...
×Ö·û´®³£Á¿³ØÔÚ¶ÑÖл¹ÊÇ·½·¨Çø
JDK1.6¼°ÒÔÇ°£¬³£Á¿³ØÔÚ·½·¨Çø£¬ÕâʱµÄ·½·¨ÇøÒ²½Ð×öÓÀ¾Ã´ú£»JDK1.7µÄʱºò£¬·½·¨ÇøºÏ²¢µ½Á˶ÑÄÚ´æÖУ¬ÕâʱµÄ³£Á¿³ØÒ²¿ÉÒÔ˵ÊÇÔÚ¶ÑÄÚ´æÖУ»JDK1.8¼°ÒԺ󣬷½·¨ÇøÓÖ´Ó...
JDK1.6¡¢JDK1.7¡¢JDK1.8 ÄÚ´æÄ£ÐͶԱÈ
JDK 1.7£º³ÌÐò¼ÆÊýÆ÷¡¢JavaÐéÄâ»úÕ»¡¢±¾µØ·½·¨Õ»¡¢¶Ñ£¨×Ö·û´®³£Á¿¡¢¾²Ì¬±äÁ¿£©¡¢·½·¨Çø[ÓÀ¾Ã´ú]£¨ÔËÐÐʱ³£Á¿³Ø¡¢Àà³£Á¿³Ø£©JDK 1.8£º³ÌÐò¼ÆÊýÆ÷¡¢JavaÐéÄâ»úÕ»¡¢±¾...
javaÔËÐÐʱ³£Á¿³Ø°üÀ¨×Ö·û´®³£Á¿³ØÂð? - Java - CSDNÎÊ´ð
»Ø´ð1 ÒѲÉÄÉ ¼òµ¥ËµÏ°ÉString.intern() ¾ÍÊÇÊÖ¶¯°Ñ¶ÔÏó·Å½ø³£Á¿³ØÖÐ˵Ã÷ÏÂÕâ¸ö½âÊÍÊÇÕë¶ÔÓÚJDK8,7ºÍ8»¹ÊÇÓÐÇø±ðµÄ·½·¨Ò» String a = x...
JVMÊÇΪÿ¸öÀ඼´´½¨ÁËÒ»¸öÔËÐÐʱ³£Á¿³ØÂð?ÔËÐÐʱ³£Á¿...
JDK1.8 hotspot ÒƳýÁËÓÀ¾Ã´úÓÃÔª¿Õ¼ä(Metaspace)È¡¶ø´úÖ®, Õâʱºò×Ö·û´®³£Á¿³Ø»¹ÔÚ¶Ñ, ÔËÐÐʱ³£Á¿³Ø»¹ÔÚ·½·¨Çø, Ö»²»¹ý·½·¨ÇøµÄʵÏÖ´ÓÓÀ¾Ã...
»Í¼Àí½â Java String#intern µÄÄÚ´æ·Ö²¼
intern ·½·¨Ê±£¬ÓÉÓÚ³£Á¿³ØÖв»´æÔÚ¸Ã×Ö·û´®£¬javadoc ˵Ã÷ÔÚ JDK1.6 ÖлὫ¶ÑÖÐµÄ "abcd" Ìí¼ÓÖÁ³£Á¿³Ø£¬¶øÔÚ JDK1.7 ÖÐÔòÊDZ£´æ¶ÑÖÐ "abcd" µÄµØÖ·ÖÁ³£Á¿³Ø...
¹ØÓÚjavaµÄ·½·¨Çø,Ϊʲô½Ð·½·¨Çø,ÊÇ·ñÓëʵ¼ÊÓÃ;Ïàã£...
String aa = "ab"; // ·ÅÔÚ³£Á¿³ØÖÐ String bb = "ab"; // ´Ó³£Á¿³ØÖвéÕÒ System.out.println(aa==bb);// true JDK1.7 ֮ǰ...
dz̸JavaÖÐ×Ö·û´®µÄ³õʼ»¯(Ïêϸͼ½â)
°ËÖÖ»ù´¡Êý¾ÝÀàÐͳýÁËfloatºÍdouble¶¼ÊµÏÖÁ˳£Á¿³Ø¼¼Êõ¡£ÔÚ½ü´úµÄJDK°æ±¾ÖÐ(1.7ºó)£¬×Ö·û´®³£Á¿³Ø±»ÊµÏÖÔÚJava¶ÑÄÚ´æÖС£ÏÂÃæͨ¹ýÈýÐдúÂëÈôó¼Ò¶Ô×Ö·û´®³£Á¿³Ø½¨Á¢³õ²½...
×Ö·û´®³£Á¿³ØÔÚÀÏÄê´ú»¹ÊÇÄêÇá´ú - ±à³ÌÓïÑÔ - CSDNÎÊ´ð
×Ö·û´®³Ø¾ÍÊÇÄÚ´æ³ØÀàÐ͵ÄÒ»¸öºÜºÃµÄÀý×Ó¡£ÄÚ´æ³Ø¿ÉÒÔÊôÓڶѻòÕß***´ú£¬ÕâÈ¡¾öÓÚJVMÄÚ´æ¹ÜÀíµÄʵÏÖ¡£ ÔËÐÐʱ³£Á¿³ØÔËÐÐʱ³£Á¿³ØÊÇÿ¸öÀà³£Á¿...