Java installation and environment variable settings

Reference URL: https://jingyan.baidu.com/article/f25ef2546e45e4482c1b82f0.html

Tools/Materials

• JDK and JRE official website: http://www.oracle.com/technetwork/java/javase/downloads/index.html

Java Proper installation steps

1. 1

   Download the latest Java installation package to the official website and enter the top URL

2. 2

   You can download the latest Java installation package and choose your computer system, 32-bit or 64-bit. Then, after agreeing to the service, click Download

3. 3

   Click Run to install after download is complete

4. 4

   If you do not want to install to C drive by default, click Change Directory

5. 5

   The Java program is being downloaded and will be automatically unpacked after the download is complete.

6. 6

   Change the installation directory

7. 7

   installation process, installation complete

8. 8

   Installing the JDK will automatically help you look at the JRE's Oh ... If you install the JRE alone, the JDK will not be installed automatically. This is a note.

   END

Java environment variable settings

1. Right-click My Computer--"Properties--" Advanced environment Configuration--"Environment variables

2. Create a new system variable called "java_home": The value is:D:\Program Files (x86) \java\jdk1.7.0_60(This is the installation directory, everyone changes according to their own directory)

3. Create a new classpath system variable. Variable value:.; %java_home%\lib\dt.jar;%java_home%\lib\tools.jar; ( preceded by a number and semicolon , meaning that all files in that directory or subdirectory are applied), or write directly .; %java_home%\lib; You can do it.

4. New path variable, variable value:%java_home%\bin;

5. Click OK, hold, open cmd, enter Java and Javac, and view the results. The result is a successful configuration of the Java environment

Java installation and environment variable settings