http://download.oracle.com/otn-pub/java/jdk-nb/7u65-8.0/jdk-7u65-nb-8-windows-i586.exe
xp一般都是32位的,你只要选择windows X86的java就可以使用.jdk1.7
http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
jre 1.7
http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1880261.html
进入页面后点击 Accept License Agreement(接受授权许可),然后选择相应的 windows x86版本下载即可.
更多java官方资源
http://www.oracle.com/technetwork/java/javase/downloads/