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This article shows you how to install JDK under the CentOS system, the content is concise and easy to understand, it will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

JDK (Java Development Kit) is Sun Microsystems's product for Java developers. JDK has become the most widely used Java SDK since the launch of Java. JDK is the core of the entire Java, including the Java runtime environment, Java tools and Java basic class libraries. Let's learn how to install JDK on a CentOS system.

The CentOS system creates the installation directory

# mkdir / usr/java

Second, download

First go to the java.sun.com website to find the download address of * * jdk (JDK 6 Update 16):

Http://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/VerifyItem-Start/jdk-6u16-linux-i586.bin?BundledLineItemUUID=OTVIBe.lL.YAAAEjJWElLW8e&OrderID=XAtIBe.lVDEAAAEjE2ElLW8e&ProductID=Dx1IBe.prBgAAAEirRcTvuC_&FileName=/jdk-6u16-linux-i586.bin

Execute under the current directory (/ usr/java):

Wget http://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/VerifyItem-Start/jdk-6u16-linux-i586.bin?BundledLineItemUUID=OTVIBe.lL.YAAAEjJWElLW8e&OrderID=XAtIBe.lVDEAAAEjE2ElLW8e&ProductID=Dx1IBe.prBgAAAEirRcTvuC_&FileName=/jdk-6u16-linux-i586.bin

You can drink a glass of water and wait slowly.

Third, install in the CentOS system

When you execute the command after the download is complete, you can have permission to execute the .bin file.

Chmod 777 * .bin

Then enter:

. / * .bin

When installing jdk, the JDK installation license agreement will be displayed. Press the space to turn the page, and the * * program will ask you if you agree to the above agreement. Of course, type "yes" and start decompressing JDK to the current directory. The progress of decompression is displayed on the screen.

After the decompression is completed, a new directory called "jdk**" will be created under the / usr/java directory, and we have installed JDK on the CentOS system.

IV. Configuration

You need to configure environment variables after installation.

Vi / etc/profile

Add the following lines in * *:

Export JAVA_HOME=/usr/java/jdk1.6.0_16

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

Export PATH=$PATH:$JAVA_HOME/bin

Note that you need to change the name of jdk to the current version of JDK that you downloaded.

After setting up the JDK, enter the reboot command to restart.

5. Delete / uninstall

You can delete JDK with the rm-rf jdk1.5.0_11 command, keeping in mind that you need to empty the relevant contents of the configuration file.

The above content is how to install JDK under CentOS system. Have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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