到网站下载:

http://java.sun.com/j2se/1.4.2/index.jsp  --1.4版

Linux Platform - Java(TM) 2 SDK, Standard Edition 1.4.2_14
Download now! RPM in self-extracting file ( 这是红帽系统的专用，用rpm 命令安装 ,命令rpm -iv ) j2sdk-1_4_2_14-linux-i586-rpm.bin 48.89 MB
Download now! self-extracting file  (用 sh ./ 安装,将解压到当前目录下，copy到你需要的目录，设置环境变量) j2sdk-1_4_2_14-linux-i586.bin 34.68 MB


详细:
http://www.java.com/zh_CN/download/help/5000010500.xml