Installing the JDK for a virtual machine on a Linux system under Windows system

When the Linux system is installed, the default JDK is usually provided. Now the default is version 1.8. Need to uninstall your own, and then install what you need.

1. Find the openjdk you want to uninstall:

# Rpm-qa | grep java

2: Unload in turn (these are all queries above)

RPM-E--nodeps Javapackages-tools-3.4.1-6.el7_0.noarch

RPM-E--nodeps Python-javapackages-3.4.1-6.el7_0.noarch

RPM-E--nodeps java-1.7.0-openjdk-1.7.0.75-2.5.4.2.el7_0.x86_64

RPM-E--nodeps Tzdata-java-2015a-1.el7.noarch

RPM-E--nodeps java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64

3: Check if clean is removed:

# Rpm-qa | grep java

4: Upload the JDK installation package jdk-7u79-linux-x64.tar.gz to/usr/java to extract:

(upload can be done via Xshell and FTP)

TAR-ZXVF jdk-7u75-linux-x64.tar.gz

5: Configure the JDK, edit the/etc/profile file, and add the following tail
Export java_home=/usr/java/jdk1.7.0_79

Export jre_home=/$JAVA _home/jre
Export classpath=.: $JAVA _home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar
Export path= $PATH: $JAVA _home/bin: $JRE _home/bin

6: Reload/etc/profile:

# Source/etc/profile

7: Check that the JDK is installed successfully:

# java-version

Installing the JDK for a virtual machine on a Linux system under Windows system