Install JDK and Environment settings under UNIX and Linux

Unix
I have successfully installed JDK (JDK-1_5_0_02-LINUX-I586.RPM) on the HP Workstation Visualize C3600 UNIX system and My Computer Fedora Core 3, and the process is simple: 1. Download JDK (jdk-1_5_0_02-linux-i586.rpm) from the Internet, recommend Sun's official website www.sun.com, download it and put it in the/home directory, of course, elsewhere. Enter the installation directory #cd/home#cp jdk-1_5_0_02-linux-i586.rpm/usr/local#cd/usr/local to add executable permissions to all users #chmod +x jdk-1_5_0_02- Linux-i586.rpm.bin#./jdk-1_5_0_02-linux-i586.rpm.bin now generates the file jdk-1_5_0_02-linux-i586.rpm and also adds executable permissions to all users #chmod +x JDK-1_5_0_02-LINUX-I586.RPM Installer #rpm-ivh jdk-1_5_0_02-linux-i586.rpm installation protocol, etc., press <Enter> accept.

2. Set environment variables. #vi/etc/profile joins #set Java environmentjava_home=/usr/java/jdk-1_5_0_02classpath= on the last side.: $JAVA _home/ Lib.tools.jarpath= $JAVA _home/bin: $PATHexport java_home CLASSPATH path Save exit.

To make the JDK available to all users, you can do this: vi/etc/profile.d/java.sh in the new java.sh, enter the following: #set Java environmentjava_home=/usr/java/jdk-1_5_0 _02classpath=.: $JAVA _home/lib.tools.jarpath= $JAVA _home/bin: $PATHexport java_home CLASSPATH path Save exit, Then assign permissions to java.sh: chmod 755/etc/profile.d/java.sh

3. Use the echo command at the terminal to check environment variable settings. #echo $JAVA _home#echo $CLASSPATH #echo $PATH

4. Check that the JDK is installed successfully. #java-version If you see the JVM version and related information, the installation is successful!