Java Fundamentals Hardening 51: Running Javac reports Javac not internal or external commands (resolved)

1. Problem: Running Javac report Javac is not an internal or external command, but running Java, java-version normal?

See if the following three environment variables are set correctly:

(1) environment variable java_home

Set Java_home as the JDK installation path, as follows:

(2) environment variable PATH

(3) environment variable CLASSPATH

Summarize:

CLASSPATH.;                 %java_home%\lib; (Note: Front pastry, semicolon, back semicolon)

Java_home D:\software\Android\JDK\install (note: Both front and rear are unsigned)

PATH%java_home%\bin; (Note: Unsigned before the first value of the original variable, followed by a semicolon)

Java Fundamentals Hardening 51: Running Javac reports Javac not internal or external commands (resolved)