[Linux] Build JDK environment on Linux server

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In this paper, from【 A Journey to College 】

First, download the JDK for Linux.

See how many bits you have in Linux:

getconf LONG_BITCopy the code

Then download the corresponding digital VERSION of the JDK

Jk-7u79-linux-x64.tar.gz 下载 : jk-7u79-linux-x64.tar.gz

First I created 2 folders:

mkdir -p /java/jdkCopy the code

Jk-7u79-linux-x64.tar. gz I put in the Java directory

java -version     # check whether JDK is installed on the serverCopy the code

I haven’t installed it yet

-bash: java: command not found

Unzip the configuration to install JDk1.7:

tar zxvf /java/jdk-7u79-linux-x64.tar.gz -C /java/jdkCopy the code

All decompressed into the JDK directory.

The mv command is used to rename the file:

Mv/Java/JDK/jdk1.7.0 _79 / Java/JDK/Java 7Copy the code

Add JDK1.7 to the system environment variable:

cp /etc/profile /etc/profile.bak    # backupCopy the code

vi /etc/profile     # Edit, add the following at the endCopy the code

export JAVA_HOME=/java/jdk/java7
export JRE_HOME=${JAVA_HOME}/jre  
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib  
export PATH=${JAVA_HOME}/bin:$PATH Copy the code

After editing, how to save and exit editing.

Press Esc – > :wq – > Enter

source/etc/profileMake the configuration file take effect immediatelyCopy the code

Test whether the installation is successful:

java -version       Check whether the test is successfulCopy the code

Jdk1.7 has been installed successfully.

If you download the JDK with the RPM suffix:

Install with this command

RPM -ivh ***(the name of the file you downloaded).rpmCopy the code

Will be installed in the /usr/java directory

This article was prepared by Wang Yi. All rights reserved.

Please indicate the source of reprint:

blog.csdn.net/qq_26525215

In this paper, from【 A Journey to College 】