ThreadLocal allows you to have copy of variable per thread, which are subject to garbage collection when the thread goes away. 1 threadlocal ����ϸ� �Ű� ������ �����带 �����ϴ� ���� ���Ÿ� ���������Ͽ� �����尡 ����� ��.

IBM has an excellent article on understanding and using �� ����Ͽ��� ����� ��縦 �����ϰ� ibm ThreadLocal threadlocal . �մϴ�.
Read it �о� here ���⿡ . �մϴ�.