CentOS under JDK Installation

Source: Internet
Author: User

First step: Check if the Linux-brought JDK is installed (uninstall CentOS installed 1.4)

The installed CentOS will bring openjdk, with the command java-version, will have the following information:

Java Version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK 64-bit Server VM (build 1.6.0-b09, Mixed mode)

It is best to uninstall the OPENJDK before installing Sun's JDK.

See Rpm-qa First | grep java

The following information is displayed:

java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
Java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5

Unloading:

RPM-E--nodeps java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
RPM-E--nodeps Java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5

There are some other commands.

Rpm-qa | grep GCJ

Rpm-qa | grep JDK

If OpenJDK source cannot be found, you can also uninstall this

Yum-y Remove Java java-1.4.2-gcj-compat-1.4.2.0-40jpp.115
Yum-y Remove Java Java-1.6.0-openjdk-1.6.0.0-1.7.b09.el5

<1># rpm-qa|grep jdk← View JDK information or execute directly
Or
# rpm-q JDK
Or
# java-version
<2># Rpm-qa | grep gcj← Confirm version number of GCJ
<3># yum-y Remove java-1.4.2-gcj-compat← Uninstall GCJ

Step Two: Install the JDK
<1> download Jdk-1_5_0_14-linux-i586-rpm.bin or Jdk-1_5_0_14-linux-i586.bin from Sun
Create a new Java folder under/usr and place the installation package in the/usr/java directory
# Mkdir/usr/java
<2> Installing the JDK
# Cd/usr/java
①jdk-1_5_0_14-linux-i586-rpm.bin File Installation
# chmod 777 jdk-1_5_0_14-linux-i586-rpm.bin← modified to executable
#./jdk-1_5_0_14-linux-i586-rpm.bin← Select Yes to agree to the above agreement
# RPM-IVH jdk-1_5_0_14-linux-i586.rpm← Select Yes until installation is complete
②jdk-1_5_0_14-linux-i586.bin File Installation
# chmod a+x jdk-1_5_0_14-linux-i586.bin← enables the current user to have Execute permissions
#./jdk-1_5_0_14-linux-i586.bin← Select Yes until installation is complete

Step Three: Configure environment variables
<1># Vi/etc/profile
<2> Add the following lines at the end:
Export JAVA_HOME=/USR/JAVA/JDK1.6.0_10
Export classpath=.: $JAVA _home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar
Export path= $PATH: $JAVA _home/bin
<3># reboot← Restart machine configuration effective

CentOS under JDK Installation

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.