how hashmap works internally in java

things, and then threadlocal this map to hang under the current thread, so that map is only the thread.Using threadlocal to improve the partitioning of your hierarchy (implementation of spring transactions): http://blog.csdn.net/zhouyong0/article/details/7761835threadlocal:http://wangxinchun.iteye.com/blog/1884228 of source Code analysisThreadlocal source code parsing in Java (top): http://maosidiaoxian.iteye.com/blog/1939142Threadlocal and synchroni

()) {returntrue; else{returnfalse;}} else{returnfalse;}} else{returnfalse;}} @Overrideprotected studentclone () {studentstudent=null;try{student = (Student) super.clone ();} catch (clonenotsupportedexceptione) {thrownewruntimeexception (e);} Returnstudent;}} Reference and learn these several: http://www.oschina.net/code/snippet_271849_15779 http://blog.csdn.net/zhangerqing/article/details/8193118 Http://www.cnblogs.com/czpblog/archive/2012/08/06/2625794.html Expand your knowledge: http://blog.