Install JDK1.8 in RHEL6.5

Install JDK1.8 in RHEL6.5

Note:

1. jdk1.8 is installed in this article, and the rpm package is used for installation. OS: RHEL6.5

2. By default, the rpm Installation Method installs jdk on the/usr/java/jdk1.8xxx path. If you want to install JDK in a specific path, you must install jdk in source code mode.

Steps:

1. Download the rpm file JDK1.8 from the official website and upload it to the linux Server (any directory)

2. Run the rpm command to install

[Root @ localhost ~] # Rpm-ivh jdk-8u151-linux-x64.rpm

3. Set the environment variable (the global environment variable is modified here)

[Root @ localhost java] # vi/etc/profile

Add the following content to the opened profile file:

# Set java environment

JAVA_HOME =/usr/java/jdk1.8.0 _ 151

JRE_HOME =/usr/java/jdk1.8.0 _ 151/jre

CLASS_PATH =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar: $ JRE_HOME/lib

PATH = $ PATH: $ JAVA_HOME/bin: $ JRE_HOME/bin

Export JAVA_HOME JRE_HOME CLASS_PATH PATH

The figure is as follows:

Run the source command to make the new environment variable take effect:

[Root @ localhost java] # source/etc/profile

4. Verify

Method 1:

[Root @ localhost java] # java-version

Java version "1.8.0 _ 151"

Java (TM) SE Runtime Environment (build 1.8.0 _ 151-b12)

Java HotSpot (TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

The figure is as follows:

Method 2:

Create a test file Hello. java in any directory and grant the executable permission. The file content is as follows:

Class Hello

{

Public static void main (String [] args)

{

System. out. println ("Hello world! ");

}

}

Then execute the following two commands in sequence for testing:

[Root @ localhost/data] # javac Hello. java # compile

[Root @ localhost/data] # java Hello # Run

Hello world

Figure:

Output Hello world !, The test is successful.

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