Shulou(Shulou.com)06/03 Report--

Install jdk. Net on centos.

1. Go to the official website to download the installation package. This is jdk-7u79-linux-x64.rpm.

2. Set up a usr/java directory in centos. You only need to mkdir java under usr.

3. Upload rpm package. Rz jdk-7u79-linux-x64.rpm . If you cannot execute the rz command, yum install lrzsz-y.

4. Install # rpm-ivh jdk-7u79-linux-x64.rpm.

5. Configure environment variables.

Enter / etc/profile and add at the end of the file

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 、 source / etc/profile

7. Java-version to view the version.

8. The result is

[root@test1 java] # java-version

Java version "1.7.045"

OpenJDK Runtime Environment (rhel-2.4.3.3.el6-x86_64 u45-b15)

OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)

9. Uninstall the original installation of jdk. (should uninstall the one in the installation first).

Find java

Rpm-qa | grep java

Java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86_64

Tzdata-java-2013g-1.el6.noarch

Java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86_64

10. I originally wanted to uninstall it, but later I found that I didn't have to uninstall it. Wait till I learn to write.

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