java is not an internal or external command or an operable program.

What should I do if java is not an internal or external command or an operable program?

'java' is not recognized as an internal or external command, operable program or batch file

Recommended: "Java Learning"

Today I am running the reverse jar, in which the java command is used in cmd.

Configure JAVA environment variables as follows:

1. Download and install jdk

2. After the installation is complete, right-click "My Computer" and click "Properties";

3. Select the "Advanced" tab, Windows 7 selects "Advanced System Settings" on the left, click "Environment Variables";

4. User variable configuration

JAVA_HOME specifies JAVA Installation path, the value is set to: C:\Program Files\Java\jdk1.6.0_43 (the path you just selected during installation may be different for everyone)

5. System variable configuration

Path= .;%JAVA_HOME%\bin;
CLASSPATH=.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar (前面的.不要漏掉，表示当前路径)

Solution to the report that running java in CMD is not an internal command (when setting the PATH path, be sure to put .;%JAVA_HOME%\bin; at the front); (note that there is a decimal point, and the previous configuration, the semicolon at the end is in English )

Please give a thumbs up for the solution

Or run it before running the java command

set path=C:\Program Files\Java\jdk1.6.0_43\bin
set classpath=C:\Program Files\Java\jdk1.6.0_43\lib\tools.jar;C:\Program Files\Java\jdk1.6.0_43\lib\dt.jar;C:\Java\jdk1.5.0_02\bin

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