* 0 /usr/lib/jvm/java-7-openjdk-amd64/bin/jar 1071 auto modeĢ /usr/lib/jvm/java-7-openjdk-amd64/bin/jar 1071 manual mode There are 2 choices for the alternative jar (providing /usr/bin/jar). $ sudo update-alternatives -install /usr/bin/jar jar /opt/jdk1.8.0_20/bin/jar 2 If you are not setting up these, it will use older one which is auto mode. You can setup javac and jar also using alternative method. Update-alternatives: using /opt/jdk1.8.0_66/bin/java to provide /usr/bin/java (java) in manual mode Press enter to keep the current choice, or type selection number: 1 * 0 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1071 auto modeġ /opt/jdk1.8.0_66/bin/java 2 manual modeĢ /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1071 manual mode There are 2 choices for the alternative java (providing /usr/bin/java). just enter the number which is showing under Selection area to switch to alternative version of java. Here i’m going to choose oracle java 8 which is installed newely on my system. Use the below command to list installed java version on your system. $ sudo update-alternatives -install /usr/bin/java java /opt/jdk1.8.0_66/bin/java 2 5) Choose alternative java version Make sure you need to mention your java path (Newly downloaded) Use the below command to Install oracle java 8 on your system using JAVA alternatives method. $ sudo tar -zxvf jdk-8u66-linux-圆4.tar.gzĤ) Install oracle java 8 using Alternatives Method Use the below tar command to extract the tar.gz archive file. $ sudo wget -no-cookies -no-check-certificate -header "Cookie: gpw_e24=http%3A%2F%2Foraclelicense=accept-securebackup-cookie" "" Make sure oracle uses cookies, so use according to that. Use the below command to download the oracle java 8 archive file. The output clearly shows that, i have already installed OpenJDK 7 in my system. OpenJDK 64-Bit Server VM (build 24.91-b01, mixed mode) Use the below command to check installed java version on your system. List of method to install JAVA on Linux 1) Check current java version I already installed OpenJDK 7 in my system and I’m going to install oracle java 8 using java alternatives method which is very simple and handy. JAVA is necessary to run certain applications in Linux and windows environment.
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