For JDK1.5+
-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n
For JDK1.4
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8001
For JDK1.3 or easier
-Xnoagent -Djava.compiler=NONE -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8001
-Xrunjdwp
transport=dt_socket Socket传输
server=y/n 是否需要作为调试服务器执行
address=host:port Server监控的IP和端口
suspend=y/n 是否在客户端建立连接之后运行程序