dataloader
http://www.blogjava.net/heavensay/archive/2012/11/07/389685.html
a = null;
12 clazzA = null;
13 loader = null;
14 // 执行一次gc垃圾回收
15 System.gc();
http://www.blogjava.net/heavensay/archive/2012/11/07/389685.html
a = null;
12 clazzA = null;
13 loader = null;
14 // 执行一次gc垃圾回收
15 System.gc();