到http://jdeveloper.myrice.com/去看看 
www.bestdown.com
http://61.128.234.76/book/xhdownload/index.asp http://home.kzinfo.net/getc/showbook.asp?type=JAVA,JSP 
http://www.bestdown.com/的“编程语言”中的“JAVA”,有jbuilder4开发教程,入门级,还不错! ftp://bestbook:[email protected]/ftproot/ebook/jbuilder/jbuilder.rar
ftp://bestbook:[email protected]/ftproot/ebook/jbuilder/jbuilder.r19
: jbuilder4开发教程
用网记快车 jetcarhttp://www.dbgnu.com/BCB/ebook/default.asp
有visibroker for java
nihao.nlut.edu.cn
有jbuilder 开发人员指南ftp://bestbook:[email protected]/ftproot/ebook/jbuilder/jbuilder.rar
...
ftp://bestbook:[email protected]/ftproot/ebook/jbuilder/jbuilder.r19
: jbuilder4开发教程