Console 輸入密碼時顯示 * 號
http://java.sun.com/developer/technicalArticles/Security/pwordmask/

徵測效能（Profiler）
http://java.sun.com/j2se/1.4.2/docs/guide/jvmpi/jvmpi.html

鍵盤動作與 Swing 結合
http://java.sun.com/products/jfc/tsc/special_report/kestrel/keybindings.html

JVM Stack Trace
http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/


Thread 教學文件 [iFEELing 提供]
http://programming.im.ncnu.edu.tw/J_Chapter9.htm