JVM 系统参数路径，类加载器路径

path:/opt/jdk1.6.0_21/jre/lib/resources.jar:/opt/jdk1.6.0_21/jre/lib/rt.jar:/opt/jdk1.6.0_21/jre/lib/sunrsasign.jar:/opt/jdk1.6.0_21/jre/lib/jsse.jar:/opt/jdk1.6.0_21/jre/lib/jce.jar:/opt/jdk1.6.0_21/jre/lib/charsets.jar:/opt/jdk1.6.0_21/jre/classesappPath:.:/opt/jdk1.6.0_21/lib:/opt/jdk1.6.0_21/jre/lib:extdir:/opt/jdk1.6.0_21/jre/lib/ext:/usr/java/packages/lib/ext