Centos7 Installing JDK (tar.gz version) [Original]

1. Find the openjdk you want to uninstall:

# Rpm-qa | grep java

2: Uninstall in turn

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:

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

6: Reload/etc/profile:

# Source/etc/profile

7: Check that the JDK is installed successfully:

# java-version

Centos7 Installing JDK (tar.gz version) [Original]