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
    • Nimbus look-and-feel for Swing
    • Swing JLayer component
  • Web
    • Update the XML stack

Install Sun/Oracle Java JDK/JRE 7u55 on Fedora 20/19/18/17/16/15/14/13/12, CentOS 6.5/6.4/6.3/6.2/6.1/6/5.10, Red Hat (RHEL) 6.5/6.4/6.3/6.2/6.1/6/5.10

1. Download Sun/Oracle Java JDK/JRE 7u55 32-bit/64-bit RPM packages

Download Sun/Oracle Java 7u55 from here http://www.oracle.com/technetwork/java/javase/downloads/index.html. Select rpm package (jdk-7u55-linux-i586.rpm, jdk-7u55-linux-x64.rpm, jre-7u55-linux-i586.rpm or jre-7u55-linux-x64.rpm).

2. Change to root user.

sudo -i

## OR ##

su -

3. Install Java JDK or JRE package

## JDK 32-bit ##

rpm -Uvh /path/to/binary/jdk-7u55-linux-i586.rpm

 

## JDK 64-bit ##

rpm -Uvh /path/to/binary/jdk-7u55-linux-x64.rpm

 

## JRE 32-bit ##

rpm -Uvh /path/to/binary/jre-7u55-linux-i586.rpm

 

## JRE 64-bit ##

rpm -Uvh /path/to/binary/jre-7u55-linux-x64.rpm

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

Use Java JDK latest version (/usr/java/latest)

## java ##

alternatives --install /usr/bin/java java /usr/java/latest/jre/bin/java

## javaws ##

alternatives --install /usr/bin/javaws javaws /usr/java/latest/jre/bin/javaws

 

## Java Browser (Mozilla) Plugin 32-bit ##

alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/latest/jre/lib/i386/libnpjp2.so

 

## Java Browser (Mozilla) Plugin 64-bit ##

alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/latest/jre/lib/amd64/libnpjp2.so

 

## Install javac only if you installed JDK (Java Development Kit) package ##

alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac

alternatives --install /usr/bin/jar jar /usr/java/latest/bin/jar

Use Java JDK absolute version (/usr/java/jdk1.7.0_55)

## java ##

alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_55/jre/bin/java

## javaws ##

alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.7.0_55/jre/bin/javaws

 

## Java Browser (Mozilla) Plugin 32-bit ##

alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jdk1.7.0_55/jre/lib/i386/libnpjp2.so

 

## Java Browser (Mozilla) Plugin 64-bit ##

alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jdk1.7.0_55/jre/lib/amd64/libnpjp2.so

 

## Install javac only if you installed JDK (Java Development Kit) package ##

alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_55/bin/javac

alternatives --install /usr/bin/jar jar /usr/java/jdk1.7.0_55/bin/jar

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

Use Java JRE latest version (/usr/java/latest)

## java ##

alternatives --install /usr/bin/java java /usr/java/latest/bin/java

 

## javaws ##

alternatives --install /usr/bin/javaws javaws /usr/java/latest/bin/javaws

 

## Java Browser (Mozilla) Plugin 32-bit ##

alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/latest/lib/i386/libnpjp2.so

 

## Java Browser (Mozilla) Plugin 64-bit ##

alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/latest/lib/amd64/libnpjp2.so

Use Java JRE absolute version (/usr/java/jre1.7.0_55)

## java ##

alternatives --install /usr/bin/java java /usr/java/jre1.7.0_55/bin/java

 

## javaws ##

alternatives --install /usr/bin/javaws javaws /usr/java/jre1.7.0_55/bin/javaws

 

## Java Browser (Mozilla) Plugin 32-bit ##

alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jre1.7.0_55/lib/i386/libnpjp2.so

 

## Java Browser (Mozilla) Plugin 64-bit ##

alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jre1.7.0_55/lib/amd64/libnpjp2.so

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

java -version

java version "1.7.0_55"

Java(TM) SE Runtime Environment (build 1.7.0_55-b13)

Java HotSpot(TM) -Bit Server VM (build 24.51-b03, mixed mode)

 

javaws

Java(TM) Web Start 10.51.2.13-fcs

[...]

 

javac -version

javac 1.7.0_55

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

Java 7 console output on Fedora 18:

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

java

alternatives --config java

 

There are  programs which provide 'java'.

 

  Selection    Command

-----------------------------------------------

*             /usr/java/jdk1.6.0_24/jre/bin/java

              /usr/lib/jvm/jre-1.5.0-gcj/bin/java

 +            /usr/java/jdk1.6.0_26/jre/bin/java

              /usr/lib/jvm/jre-1.6.0-openjdk/bin/java

              /usr/java/jdk1.7.0_55/jre/bin/java

 

Enter to keep the current selection[+], or type selection number:

Note: java with [+] is currently on use

javaws

alternatives --config javaws

 

There are  programs which provide 'javaws'.

 

  Selection    Command

-----------------------------------------------

*             /usr/java/jdk1.6.0_24/jre/bin/javaws

 +            /usr/java/jdk1.6.0_26/jre/bin/javaws

              /usr/java/jdk1.7.0_55/jre/bin/javaws

 

Enter to keep the current selection[+], or type selection number:

Note: java with [+] is currently on use

libjavaplugin.so (32-bit)

alternatives --config libjavaplugin.so

 

There are  programs which provide 'libjavaplugin.so'.

 

  Selection    Command

-----------------------------------------------

*             /usr/java/jdk1.6.0_24/jre/lib/i386/libnpjp2.so

 +            /usr/java/jdk1.6.0_26/jre/lib/i386/libnpjp2.so

              /usr/java/jdk1.7.0_55/jre/lib/i386/libnpjp2.so

 

Enter to keep the current selection[+], or type selection number:

libjavaplugin.so.x86_64 (64-bit)

alternatives --config libjavaplugin.so.x86_64

 

There are  programs which provide 'libjavaplugin.so.x86_64'.

 

  Selection    Command

-----------------------------------------------

*             /usr/java/jdk1.6.0_24/jre/lib/amd64/libnpjp2.so

 +            /usr/java/jdk1.6.0_26/jre/lib/amd64/libnpjp2.so

              /usr/java/jdk1.7.0_55/jre/lib/amd64/libnpjp2.so

 

Enter to keep the current selection[+], or type selection number:

javac

alternatives --config javac

 

There are  programs which provide 'javac'.

 

  Selection    Command

-----------------------------------------------

*             /usr/java/jdk1.6.0_24/bin/javac

 +            /usr/java/jdk1.6.0_26/bin/javac

              /usr/java/jdk1.7.0_55/bin/javac

 

Enter to keep the current selection[+], or type selection number:

Note: java with [+] is currently on use

Post-Installation Setup

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

Java JDK and JRE latest version (/usr/java/latest)

## export JAVA_HOME JDK/JRE ##

export JAVA_HOME="/usr/java/latest"

Java JDK and JRE absolute version (/usr/java/jdk1.7.0_55)

## export JAVA_HOME JDK ##

export JAVA_HOME="/usr/java/jdk1.7.0_55"

 

## export JAVA_HOME JRE ##

export JAVA_HOME="/usr/java/jre1.7.0_55"
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