[Installation] Java JDK + eclipse

• 1jdk download

Http://www.oracle.com/technetwork/java/javase/downloads/index.html

Select accept and download the file that matches your system. (X86 refers to 32-bit) • 2jdk installation Note: You must record the JDK installation directory during the installation process! • 3 test Java • 4 environment variable settings 1) in system variables, new: variable name java_home
The variable value is the JDK installation directory; 2) Add "% java_home % \ bin;" before the variable value named path in the system variable; 3) Add a new one in the system variable: the variable name is classpath. The variable value is ".; % java_home % \ Lib \ DT. jar; % java_home % \ Lib \ tools. jar"

• 5 test javac

JDK is installed ......

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Below is eclipse...

1. Download http://www.eclipse.org/downloads/

 

Classic is generally used. If you have special requirements, select the appropriate version and download the version consistent with the system version based on the number of digits.

Decompress the package >>>

 

Double click to use it. You can paste its shortcut on the desktop. (Setting workplace for the first time is the place where you plan to store the program ).