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Install Sun/Oracle Java JDK/JRE 7 on Fedora 15/14, CentOS/RHEL 5.6/6

This is guide, howto Install Sun/Oracle Java JDK and JRE 7 on

Fedora 15, Fedora 14, Fedora 13, Fedora 12, CentOS 5.6, CentOS 6, Red Hat (RHEL)

5.6, Red Hat (RHEL) 6.

If you’re looking instruction for Sun/Oracle Java JDK/JRE version 6 installation, please check this guide.

What’s new in Sun/Oracle Java 7

  • VM
    • Compressed 64-bit object pointers
    • Garbage-First GC (G1)
    • JSR 292: VM support for non-Java languages (InvokeDynamic)
  • Lang
    • JSR 294: Language and VM support for modular programming
    • JSR 308: Annotations on Java types
    • JSR TBD: Small language enhancements (Project Coin)
    • JSR TBD: Project Lambda
  • Core
    • Modularization (Project Jigsaw)
    • Upgrade class-loader architecture
    • Method to close a URLClassLoader
    • Unicode 5.1
    • Concurrency and collections updates (jsr166y)
    • JSR 203: More new I/O APIs for the Java platform (NIO.2)
    • SCTP (Stream Control Transmission Protocol)
    • SDP (Sockets Direct Protocol)
    • Elliptic-curve cryptography (ECC)
  • Client
    • XRender pipeline for Java 2D
    • Forward-port 6u10 deployment features
    • Create new platform APIs for 6u10 graphics features
    • Nimbus look-and-feel for Swing
    • Swing JLayer component
  • Web
    • Update the XML stack

Read full info from here.

Install Sun/Oracle Java JDK/JRE 7 on Fedora 15/14/13/12, CentOS 5.6/6, Red Hat (RHEL) 5.6/6

1. Download Sun/Oracle Java JDK/JRE 7 32-bit/64-bit RPM packages

Download Sun/Oracle Java 7 from herehttp://www.oracle.com/technetwork/java/javase/downloads/index.html.

Select rpm.bin package (jdk-7-linux-i586.rpm, jdk-7-linux-x64.rpm, jre-7-linux-i586.rpm or jre-7-linux-x64.rpm).

2. Change to root user.

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sudo -i
## OR ##
su -

3. Install Java JDK or JRE package

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## JDK 32-bit ##
rpm -Uvh /path/to/binary/jdk-7-linux-i586.rpm
## JDK 64-bit ##
rpm -Uvh /path/to/binary/jdk-7-linux-x64.rpm
## JRE 32-bit ##
rpm -Uvh /path/to/binary/jre-7-linux-i586.rpm
## JRE 64-bit ##
rpm -Uvh /path/to/binary/jre-7-linux-x64.rpm

4a. Install Sun/Oracle JDK javajavawslibjavaplugin.so (for Firefox/Mozilla) and javac with alternatives –install command

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## java ##
alternatives --install /usr/bin/java java /usr/java/jdk1.7.0/jre/bin/java 20000
## javaws (32-bit only) ##
alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.7.0/jre/bin/javaws 20000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jdk1.7.0/jre/lib/i386/libnpjp2.so 20000
## Java Browser (Mozilla) Plugin 64-bit ##
alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jdk1.7.0/jre/lib/amd64/libnpjp2.so 20000
## Install javac only if you installed JDK (Java Development Kit) package ##
alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0/bin/javac 20000
alternatives --install /usr/bin/jar jar /usr/java/jdk1.7.0/bin/jar 20000

4b. Install Sun/Oracle JRE javajavaws and libjavaplugin.so (for Firefox/Mozilla) with alternatives –install command

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## java ##
alternatives --install /usr/bin/java java /usr/java/jre1.7.0/bin/java 20000
## javaws (32-bit only) ##
alternatives --install /usr/bin/javaws javaws /usr/java/jre1.7.0/bin/javaws 20000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jre1.7.0/lib/i386/libnpjp2.so 20000
## Java Browser (Mozilla) Plugin 64-bit ##
alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jre1.7.0/lib/amd64/libnpjp2.so 20000

5. Check current java, javac, javaws and libjavaplugin.so versions

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java -version
java version "1.7.0" Java(TM) SE Runtime Environment (build 1.7.0-b147) Java HotSpot(TM) Server VM (build 21.0-b17, mixed mode)
javaws Java(TM) Web Start 1.7.0 
 
[...] 
 
javac -version
javac 1.7.0

Note: Check libjavaplugin.so with restarting Mozilla Firefox and writing about:plugins on address bar.

 

6. Swap between OpenJDK and Sun/Oracle Java JDK/JRE 6 and 7 versions

java

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alternatives --config java
 
There are 5 programs which provide 'java'.
 
  Selection    Command
-----------------------------------------------
*  1           /usr/java/jdk1.6.0_24/jre/bin/java
   2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
 + 3           /usr/java/jdk1.6.0_26/jre/bin/java
   4           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
   5           /usr/java/jdk1.7.0/jre/bin/java
 
Enter to keep the current selection[+], or type selection number: 5

Note: java with [+] is currently on use

javaws

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alternatives --config javaws
 
There are 3 programs which provide 'javaws'.
 
  Selection    Command
-----------------------------------------------
*  1           /usr/java/jdk1.6.0_24/jre/bin/javaws
 + 2           /usr/java/jdk1.6.0_26/jre/bin/javaws
   3           /usr/java/jdk1.7.0/jre/bin/javaws
 
Enter to keep the current selection[+], or type selection number: 3

Note: java with [+] is currently on use

libjavaplugin.so

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alternatives --config libjavaplugin.so
 
There are 3 programs which provide 'libjavaplugin.so'.
 
  Selection    Command
-----------------------------------------------
*  1           /usr/java/jdk1.6.0_24/jre/lib/i386/libnpjp2.so
 + 2           /usr/java/jdk1.6.0_26/jre/lib/i386/libnpjp2.so
   3           /usr/java/jdk1.7.0/jre/lib/i386/libnpjp2.so
 
Enter to keep the current selection[+], or type selection number: 3

javac

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alternatives --config javac
 
There are 3 programs which provide 'javac'.
 
  Selection    Command
-----------------------------------------------
*  1           /usr/java/jdk1.6.0_24/bin/javac
 + 2           /usr/java/jdk1.6.0_26/bin/javac
   3           /usr/java/jdk1.7.0/bin/javac
 
Enter to keep the current selection[+], or type selection number: 3

Note: java with [+] is currently on use

Post-Installation Setup

Add JAVA_HOME environment variable to /etc/profile file or $HOME/.bash_profile file

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## export JAVA_HOME JDK ##
export JAVA_HOME="/usr/java/jdk1.7.0"
 
## export JAVA_HOME JRE ##
export JAVA_HOME="/usr/java/jre1.7.0"

 

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