Installing JDK under CentOS

Prerequisites before using a clean CentOS must not have installed the JDK so ignore the uninstall step

<1> download Jdk-1_5_0_14-linux-i586-rpm.bin or Jdk-1_5_0_14-linux-i586.bin from Sun (the version I'm using is jdk1.6.0_45)

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

Input java-version Validation

[Email protected] ~]# java-version
Java Version "1.6.0_45"
Java (TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot (TM) Client VMs (build 20.45-b01, mixed mode, sharing)

Installing JDK under CentOS