一、准备工作 卸载OpenJDK
1.查找需要卸载的OpenJDK [xsdbc@localhost ~]$ rpm -qa | grep openjdk | grep -v grep java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64 java-1.6.0-openjdk-devel-1.6.0.34-1.13.6.1.el7_0.x86_64 java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64 java-1.6.0-openjdk-1.6.0.34-1.13.6.1.el7_0.x86_64 java-1.7.0-openjdk-devel-1.7.0.75-2.5.4.2.el7_0.x86_641.查找需要卸载的OpenJDK [xsdbc@loca
