Java development environment configuration in win7 and linux

Java memory model, Java memory management, Java heap and stack, and garbage collection

1. win7 configuration

First Download jdk that meets the operating system version, such as the latest jdk 8:

Download link: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-4243151.html;

Of course, developers generally do not have the latest Jdk. the mainstream options are Jdk 6 and Jdk 7. of course, more and more developers are switching to the Jdk 8 platform.

After the download, install the jdk on the local machine. the installation path is C: \ Program Files \ Java \ jdk1.7.0 _ 79.

Perform the following steps: computer -- properties -- advanced system settings -- environment variables

In the environment variable of xxx (xxx represents your computer name), create JAVA_HOME (this name is customized, but this is common) and enter the value

Click OK. Windos key + r, enter cmd

Enter the java-version command. if you can see the java-related version information, the java environment variable is successfully configured.

2. linux environment variable configuration

Linux and Windows 7 are multi-user operating systems. Therefore, the location where environment variables are configured indicates the scope of the environment variables.

As I configured bai for Windows 7 above, the java environment can be used only when bai users log on. Other users will not be able to use the environment. of course, if your configuration is on system variables, all users on this computer will be able to use this environment. After getting familiar with this concept, it is easy to configure environment variables on linux.

Linux and Windows 7 are multi-user operating systems. Therefore, the location where environment variables are configured indicates the scope of the environment variables.

As I configured bai for Windows 7 above, the java environment can be used only when bai users log on. Other users will not be able to use the environment. of course, if your configuration is on system variables, all users on this computer will be able to use this environment. After getting familiar with this concept, it is easy to configure environment variables on linux.

Step 1: Download

Download the jdk of the corresponding linux version to/usr/local, and decompress the package:

$ Wget tar-zxvf jdk-8u66-linux-x64.tar.gz $ mv jdk1.7.0 _ 79 jdk1.7 # Rename

Obtain the Jdk directory/usr/local/jdk1.7.

Step 2: configure the java environment for all users

Log on to vim/etc/profile as the root user

Press the insert key, move to the last row, and add

#configuration java development enviroumentexport JAVA_HOME=/usr/local/jdk1.7export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

Press esc and enter wq. after exiting, enter java-version. if the corresponding version information is displayed, the java environment variable is successfully configured.

Step 3: configure the java environment for the current user

Vim ~ /. Bash_profile file

Add the following information:

#configuration java development enviroumentexport JAVA_HOME=/usr/local/jdk1.7export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

Log on again. There are two common methods.