Install jdk commands in ubuntu

Install jdk Command 1 in ubuntu. download jdk-6u25-linux-i5862. the easiest way to modify the executable permissions for a jdk-6u25-linux-i586 is to grant all permissions, that is, the chmod777jdk-6u25-linux-i5863. install jdk after self-extracting. /jdk-6u25-linu...
Install jdk Command 1 in ubuntu. download jdk-6u25-linux-i586 2. the easiest way to modify the executable permissions for a jdk-6u25-linux-i586 is to grant all permissions, I .e.: chmod 777 jdk-6u25-linux-i586 3. install jdk after self-extracting. /after the jdk-6u25-linux-i586 is installed, the/home/gong/jdk1.6.0 _ 25 folder 4 is generated. set environment variables, if you are not familiar with vi, you can use the gedit command to start the text editor. compared with the vi command, sudo gedit/etc/environment www.2cto.com can add the following content and save and exit export JAVA_HOME =/home/gong/jdk1.6.0 _ 25 export CLASSPATH = ..: $ JAVA_HOME/lib: $ JAVA_HOME/jre/lib PATH = "/usr/loca L/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games: $ JAVA_HOME/bin "note: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games in PATH must be retained, otherwise, the system cannot be logged on. 5. execute the following command to make the configuration take effect source/etc/environment 6. verify that the configuration is complete gong @ gong-laptop :~ $ Echo $ JAVA_HOME bash:/home/gong/jdk1.6.0 _ 25: A Directory named gong @ gong-laptop :~ $ Echo $ CLASSPATH.:/home/gong/jdk1.6.0 _ 25/lib:/home/gong/jdk1.6.0 _ 25/jre/lib gong @ gong-laptop :~ $ Echo $ PATH/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games: /home/gong/jdk1.6.0 _ 25/bin gong @ gong-laptop :~ $ Java-version java version "1.6.0 _ 25" Java (TM) SE Runtime Environment (build 1.6.0 _ 25-b06) Java HotSpot (TM) Server VM (build pipeline 0-b11, author of mixed mode xiangkw