Centos6.6 install jdk1.7

Centos6.6 install jdk1.7

1. view the jdk version installed by the System

# Java-version

# Rpm-qa | grep jdk

# Yum remove-y java-1.7.0-openjdk-1.7.0.99-2.6.5.0.el6_7.x86_64

# Yum remove-y java-1.6.0-openjdk-1.6.0.0-11.1.13.4.el6.x86_64

2. Delete the original jdk1.8

# Cd/usr/local/

# Rm-rf jdk

# Rm-rf jdk1.8.0 _ 73

3. Go to the directory and upload

# Cd/server/tools/

# Rz-y

Jdk-7u79-linux-x64.gz

4. Install jdk1.7

# Tar jdk-7u79-linux-x64.gz-C/usr/local/

# Ln-s/usr/local/jdk1.7.0 _ 79 // usr/local/jdk

# Chown-R root. root/usr/local/jdk

5. Configure java environment variables

# Vim/etc/profile

Add at the end

Export JAVA_HOME =/usr/local/jdk

Export PATH = $ JAVA_HOME/bin: $ JAVA_HOME/jre/bin: $ PATH

Export CLASSPATH =. $ CLASSPATH: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib: $ JAVA_HOME/lib/tools. jar

Configuration takes effect

# Source/etc/profile

6. View jdk version information

# Java-version

Java version "1.7.0 _ 79"

Java (TM) SE Runtime Environment (build 1.7.0 _ 79-b15)

Java HotSpot (TM) 64-Bit Server VM (build 24.79-b02, mixed mode)