javac cannot be run, and furthermore does not seem installed
java, javac
Solution
The JRE is merely the Java Runtime Environment, which includes only the infrastructure needed to run Java programs that are already compiled.
To compile Java source code using `javac`, you need the Java Development Kit (JDK).
On Oracle's Java download page, choose the package labelled "JDK".
Problem
I have a problem involving setting up Java. I have installed the JRE, added its path to `PATH`, and set `JAVA_HOME` and `CLASSPATH`. Now, `java` and `javacpl` work fine, but running `javac` generates a command-not-found error. Furthermore, `javac.exe` does not even seem to exist in the JRE's `bin` folder. How do I run `javac`?