1995.5 Oak ——>java1.0 提出 write once run anywhere 1996.1 jdk1.0 jvm Sun Classic VM 1997.2 JDK1.1 内部类,反射,jar文件格式,jdbc,javabeans,rmi 1998 JDK1.2 j2EE, j2SE,j2ME,swing,jit,Hotspot VM 2000 JDK1.3 Timer,java2d 2002 JDK1.4 struts,hibernate,spring 1.x,正则表达式…