This is guide, howto Install Oracle (Sun) Java JDK and JRE 8 update 191 (8u191) on Fedora 29/28/27/26, CentOS 7.5/6.10, Red Hat (RHEL) 7.5/6.10.
If you’re looking installation instruction for older Oracle Java versions, then check Install Sun/Oracle Java JDK/JRE 7 on Fedora 24/23/22/21/20/19, CentOS/Red Hat (RHEL) 7.2/6.9/5.11 or Install Sun/Oracle Java JDK/JRE 6 on Fedora 20/19/18, CentOS/Red Hat (RHEL) 6.5/5.10.
What’s new in Oracle Java 8
- Java Programming Language
- Lambda Expressions, a new language feature
- Default methods enable new functionality to be added to the interfaces of libraries and ensure binary compatibility with code written for older versions of those interfaces
- Improved type inference.
- Collections
- Classes in the new java.util.stream package provide a Stream API to support functional-style operations on streams of elements
- Performance Improvement for HashMaps with Key Collisions
- Security
- Client-side TLS 1.2 enabled by default
- Stronger algorithms for password-based encryption
- SSL/TLS Server Name Indication (SNI) Extension support in JSSE Server
- SHA-224 Message Digests
- Enhanced Support for NSA Suite B Cryptography
- Tools
- The jjs command is provided to invoke the Nashorn engine
- The java command launches JavaFX applications
- The java man page has been reworked
- The jdeps command-line tool is provided for analyzing class files
- Java Management Extensions (JMX) provide remote access to diagnostic commands
- The jarsigner tool has an option for requesting a signed time stamp from a Time Stamping Authority (TSA)
Read full info from here.
Install Sun/Oracle Java JDK/JRE 8u191 on Fedora 29/28/27/26, CentOS 7.5/6.10, Red Hat (RHEL) 7.5/6.10
1. Download Sun/Oracle Java JDK/JRE 8u181 32-bit/64-bit RPM packages
Download Sun/Oracle Java 8u191 from here www.oracle.com/technetwork/java/javase/downloads/index.html. Select rpm package (jdk-8u191-linux-i586.rpm, jdk-8u191-linux-x64.rpm, jre-8u191-linux-i586.rpm or jre-8u191-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-8u191-linux-i586.rpm
## JDK 64-bit ##
rpm -Uvh /path/to/binary/jdk-8u191-linux-x64.rpm
## JRE 32-bit ##
rpm -Uvh /path/to/binary/jre-8u191-linux-i586.rpm
## JRE 64-bit ##
rpm -Uvh /path/to/binary/jre-8u191-linux-x64.rpm
4a. Install Sun/Oracle JDK java, javaws, libjavaplugin.so (for Firefox/Mozilla) and javac with alternatives –install command
Note Fedora 29 users, if you need javaws, then on Fedora 29 you will following before next step:
alternatives --set javaws /usr/bin/javaws
dnf install libnsl
Use Java JDK latest version (/usr/java/latest)
## java ##
alternatives --install /usr/bin/java java /usr/java/latest/jre/bin/java 200000
## javaws ##
alternatives --install /usr/bin/javaws javaws /usr/java/latest/jre/bin/javaws 200000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/latest/jre/lib/i386/libnpjp2.so 200000
## 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 200000
## Install javac only if you installed JDK (Java Development Kit) package ##
alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 200000
alternatives --install /usr/bin/jar jar /usr/java/latest/bin/jar 200000
Use Java JDK 8u191 absolute version (/usr/java/jdk1.8.0_191)
## java ##
alternatives --install /usr/bin/java java /usr/java/jdk1.8.0_191/jre/bin/java 200000
## javaws ##
alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.8.0_191/jre/bin/javaws 200000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jdk1.8.0_191/jre/lib/i386/libnpjp2.so 200000
## Java Browser (Mozilla) Plugin 64-bit ##
alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jdk1.8.0_191/jre/lib/amd64/libnpjp2.so 200000
## Install javac only if you installed JDK (Java Development Kit) package ##
alternatives --install /usr/bin/javac javac /usr/java/jdk1.8.0_191/bin/javac 200000
alternatives --install /usr/bin/jar jar /usr/java/jdk1.8.0_191/bin/jar 200000
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 200000
## javaws ##
alternatives --install /usr/bin/javaws javaws /usr/java/latest/bin/javaws 200000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/latest/lib/i386/libnpjp2.so 200000
## 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 200000
Use Java JRE 8u181 absolute version (/usr/java/jre1.8.0_191)
## java ##
alternatives --install /usr/bin/java java /usr/java/jre1.8.0_191/bin/java 200000
## javaws ##
alternatives --install /usr/bin/javaws javaws /usr/java/jre1.8.0_191/bin/javaws 200000
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so /usr/java/jre1.8.0_191/lib/i386/libnpjp2.so 200000
## Java Browser (Mozilla) Plugin 64-bit ##
alternatives --install /usr/lib64/mozilla/plugins/libjavaplugin.so libjavaplugin.so.x86_64 /usr/java/jre1.8.0_191/lib/amd64/libnpjp2.so 200000
5. Check current java, javac, javaws and libjavaplugin.so versions
java -version
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
javaws
Java(TM) Web Start 11.191.2.12-fcs
[...]
javac -version
javac 1.8.0_191
Note: Check libjavaplugin.so with restarting Mozilla Firefox and writing about:plugins on address bar.
Java 8 console output on Fedora 25:
6. Swap between OpenJDK and Sun/Oracle Java JDK/JRE 6, 7 and 8 versions
java
alternatives --config java
There are 4 programs which provide 'java'.
Selection Command
-----------------------------------------------
1 /usr/java/jdk1.6.0_26/jre/bin/java
2 /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
3 /usr/java/jdk1.7.0_55/jre/bin/java
*+ 4 /usr/java/jdk1.8.0_191/jre/bin/java
Enter to keep the current selection[+], or type selection number: 4
Note: java with [+] is currently on use
javaws
alternatives --config javaws
There are 4 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_55/jre/bin/javaws
4 /usr/java/jdk1.8.0_191/jre/bin/javaws
Enter to keep the current selection[+], or type selection number: 4
Note: java with [+] is currently on use
libjavaplugin.so (32-bit)
alternatives --config libjavaplugin.so
There are 4 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_55/jre/lib/i386/libnpjp2.so
4 /usr/java/jdk1.8.0_191/jre/lib/i386/libnpjp2.so
Enter to keep the current selection[+], or type selection number: 4
libjavaplugin.so.x86_64 (64-bit)
alternatives --config libjavaplugin.so.x86_64
There are 4 programs which provide 'libjavaplugin.so.x86_64'.
Selection Command
-----------------------------------------------
* 1 /usr/java/jdk1.6.0_24/jre/lib/amd64/libnpjp2.so
+ 2 /usr/java/jdk1.6.0_26/jre/lib/amd64/libnpjp2.so
3 /usr/java/jdk1.7.0_55/jre/lib/amd64/libnpjp2.so
4 /usr/java/jdk1.8.0_191/jre/lib/amd64/libnpjp2.so
Enter to keep the current selection[+], or type selection number: 4
javac
alternatives --config javac
There are 4 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_55/bin/javac
4 /usr/java/jdk1.8.0_191/bin/javac
Enter to keep the current selection[+], or type selection number: 4
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/jdk1.8.0_191)
## export JAVA_HOME JDK ##
export JAVA_HOME="/usr/java/jdk1.8.0_191"
## export JAVA_HOME JRE ##
export JAVA_HOME="/usr/java/jre1.8.0_191"
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