[root@localhost soft]# java -version
java version “1.4.2″
gij (GNU libgcj) version 4.1.2 20071124 (Red Hat 4.1.2-42)
[root@localhost soft]# rpm -qa | grep jdk
[root@localhost soft]# rpm -qa | grep gcj
libgcj-4.1.2-42.el5
java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
上面先确认jdk的具体版本号，然后
[root@localhost jdk1.6.0_11]# yum -y remove java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
Setting up Remove Process
Resolving Dependencies………..(开始卸载)
Removed: java-1.4.2-gcj-compat.i386 0:1.4.2.0-40jpp.115
Dependency Removed: antlr.i386 0:2.7.6-4jpp.2 bsf.i386 0:2.3.0-11jpp.1 bsh.i386 0:1.3.0-9jpp.1 gjdoc.i386 0:0.7.7-12.el5 hsqldb.i386 1:1.8.0.9-1jpp.2 openoffice.org-calc.i386
1:2.3.0-6.5.el5 openoffice.org-core.i386 1:2.3.0-6.5.el5 openoffice.org-draw.i386 1:2.3.0-6.5.el5 openoffice.org-graphicfilter.i386 1:2.3.0-6.5.el5 openoffice.org-impress.i386
1:2.3.0-6.5.el5 openoffice.org-langpack-zh_CN.i386 1:2.3.0-6.5.el5 openoffice.org-langpack-zh_TW.i386 1:2.3.0-6.5.el5 openoffice.org-math.i386 1:2.3.0-6.5.el5 openoffice.org-
writer.i386 1:2.3.0-6.5.el5 openoffice.org-xsltfilter.i386 1:2.3.0-6.5.el5 tomcat5-jsp-2.0-api.i386 0:5.5.23-0jpp.7.el5 tomcat5-servlet-2.4-api.i386 0:5.5.23-0jpp.7.el5 xalan-
j2.i386 0:2.7.0-6jpp.1 xerces-j2.i386 0:2.7.1-7jpp.2 xml-commons-apis.i386 0:1.3.02-0.b2.7jpp.10 xml-commons-resolver.i386 0:1.1-1jpp.12
Complete!(卸载完成)