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I am looking for a way to install Java in Ubuntu via the console. Can it be done, and if so how?
2013-01-26 10:45:05
It can be done by adding ppasteps:1. open up terminalEnter the following commands:2. sudo add-apt-repository ppa:webupd8team/java 3. sudo apt-get update 4. sudo apt-get install oracle-java7-installerWait for a bit,, and the installation is completeTo check the version of java in use type the command:sudo java -versionTo choose default java for use: sudo update-alternatives --config java
2013-01-26 01:53:11
Why not just download it from Java site.
2013-01-25 15:33:52
First check your system architecture by usnig this command "file /sbin/init " in a terminal now check for java if already installed "java -version"If you have OpenJDK installed on your system it may look like this: java version "1.6.0_21" OpenJDK Runtime Environment (IcedTea6 1.10pre) (6b21~pre1-0lucid1) OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode)If you have OpenJDK installed on your system, you have the wrong vendor version of Java installed.Completely remove the OpenJDK/JRE from your system and create a directory to hold your Oracle Java JDK/JRE binaries. This will prevent system conflicts and confusion between different vendor versions of Java. For example, if you have the OpenJDK/JRE installed on your system, you can remove it by typing the following at the command line: Type/Copy/Paste: sudo apt-get purge openjdk-\* This command will completely remove OpenJDK/JRE from your system Type/Copy/Paste: sudo mkdir -p /usr/local/java This command will create a directory to hold your Oracle Java JDK and JRE binaries.Download the Oracle Java JDK/JRE for Linux http://www.oracle.com/technetwork/java/javase/downloads/index.htmlMake sure you select the correct compressed binaries for your system architecture 32-bit or 64-bit (which end in tar.gz). For example, if you are on Ubuntu Linux 32-bit operating system download 32-bit Oracle Java binaries. For example, if you are on Ubuntu Linux 64-bit operating system download 64-bit Oracle Java binaries.Copy the Oracle Java binaries into the /usr/local/java directory. In most cases, the Oracle Java binaries are downloaded to: /home/"your_user_name"/Downloads. 32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions: Type/Copy/Paste: cd /home/"your_user_name"/Downloads Type/Copy/Paste: sudo -s cp -r jdk-7u11-linux-i586.tar.gz /usr/local/java Type/Copy/Paste: sudo -s cp -r jre-7u11-linux-i586.tar.gz /usr/local/java Type/Copy/Paste: cd /usr/local/java 64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions: Type/Copy/Paste: cd /home/"your_user_name"/Downloads Type/Copy/Paste: sudo -s cp -r jdk-7u11-linux-x64.tar.gz /usr/local/java Type/Copy/Paste: sudo -s cp -r jre-7u11-linux-x64.tar.gz /usr/local/java Type/Copy/Paste: cd /usr/local/javaRun the following commands on the downloaded Oracle Java tar.gz files. Make sure to do this as root in order to make them executable for all users on your system. To open a root terminal type sudo -s you will be prompted for your logon password. 32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions: Type/Copy/Paste: sudo -s chmod a+x jdk-7u11-linux-i586.tar.gz Type/Copy/Paste: sudo -s chmod a+x jre-7u11-linux-i586.tar.gz 64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions: Type/Copy/Paste: sudo -s chmod a+x jdk-7u11-linux-x64.tar.gz Type/Copy/Paste: sudo -s chmod a+x jre-7u11-linux-x64.tar.gzUnpack the compressed Java binaries, in the directory /usr/local/java 32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions: Type/Copy/Paste: sudo -s tar xvzf jdk-7u11-linux-i586.tar.gz Type/Copy/Paste: sudo -s tar xvzf jre-7u11-linux-i586.tar.gz 64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions: Type/Copy/Paste: sudo -s tar xvzf jdk-7u11-linux-x64.tar.gz Type/Copy/Paste: sudo -s tar xvzf jre-7u11-linux-x64.tar.gzDouble-check your directories. At this point, you should have two uncompressed binary directories in /usr/local/java for the Java JDK/JRE listed as: Type/Copy/Paste: ls -a jdk1.7.0_11 jre1.7.0_11Edit the system PATH file /etc/profile and add the following system variables to your system path. Use nano, gedit or any other text editor, as root, open up /etc/profile. Type/Copy/Paste: sudo gedit /etc/profile or Type/Copy/Paste: sudo nano /etc/profileScroll down to the end of the file using your arrow keys and add the following lines below to the end of your /etc/profile file: Type/Copy/Paste: JAVA_HOME=/usr/local/java/jdk1.7.0_11 PATH=$PATH:$HOME/bin:$JAVA_HOME/bin JRE_HOME=/usr/local/java/jre1.7.0_11 PATH=$PATH:$HOME/bin:$JRE_HOME/bin export JAVA_HOME export JRE_HOME export PATHSave the /etc/profile file and exit.Inform your Ubuntu Linux system where your Oracle Java JDK/JRE is located. This will tell the system that the new Oracle Java version is available for use. Type/Copy/Paste: sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jre1.7.0_11/bin/java" 1 this command notifies the system that Oracle Java JRE is available for use Type/Copy/Paste: sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk1.7.0_11/bin/javac" 1 this command notifies the system that Oracle Java JDK is available for use Type/Copy/Paste: sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jre1.7.0_11/bin/javaws" 1 this command notifies the system that Oracle Java Web start is available for useInform your Ubuntu Linux system that Oracle Java JDK/JRE must be the default Java. Type/Copy/Paste: sudo update-alternatives --set java /usr/local/java/jre1.7.0_11/bin/java this command will set the java runtime environment for the system Type/Copy/Paste: sudo update-alternatives --set javac /usr/local/java/jdk1.7.0_11/bin/javac this command will set the javac compiler for the system Type/Copy/Paste: sudo update-alternatives --set javaws /usr/local/java/jre1.7.0_11/bin/javaws this command will set Java Web start for the systemReload your system wide PATH /etc/profile by typing the following command: Type/Copy/Paste: . /etc/profile Note your system-wide PATH /etc/profile file will reload after reboot of your Ubuntu Linux systemTest to see if Oracle Java was installed correctly on your system. Run the following commands and note the version of Java:A successful installation of 32-bit Oracle Java will display: Type/Copy/Paste: java -version This command displays the version of java running on your system You should receive a message which displays: java version "1.7.0_11" Java(TM) SE Runtime Environment (build 1.7.0_11-b21) Java HotSpot(TM) Server VM (build 23.1-b03, mixed mode) Type/Copy/Paste: javac -version This command lets you know that you are now able to compile Java programs from the terminal. You should receive a message which displays: javac 1.7.0_11A successful installation of Oracle Java 64-bit will display: Type/Copy/Paste: java -version This command displays the version of java running on your system You should receive a message which displays: java version "1.7.0_11" Java(TM) SE Runtime Environment (build 1.7.0_11-b21) Java HotSpot(TM) 64-Bit Server VM (build 23.6-b04, mixed mode) Type/Copy/Paste: javac -version This command lets you know that you are now able to compile Java programs from the terminal. You should receive a message which displays: javac 1.7.0_11Congratulations, you just installed Oracle Java on your Linux system
2013-01-25 13:43:45
Go to this site:http://en.kioskea.net/faq/741-installing-java-under-ubuntu
2013-01-25 11:56:06
Visit the link below to know how to do it -http://www.wikihow.com/Install-Oracle-Java-on-Ubuntu-Linux