Compile another java file from java file

Question

Just out of curiosity. Can we compile & run a java file from another java program? If so, can you send a reference to that knowledge source?

Answer 1

Take a look at Java Compiler Api and this little example.

Answer 2

You can do it by calling the cmd prompt or use the Main class from the Java Code.

I don't know remember well how is it, but I did it a long time ago.

Answer 3

If you have the java source code already in a file, then you can just call the java compiler. The java compiler is built-in to the JVM libraries as of version 1.6.

The interface is documented here.

Answer 4

Didn't read it thoroughly, but maybe this helps.

Answer 5

If you're using Java 6, the best way to do this is through the javax.tools.JavaCompiler interface.

If you're using an older version of Java, you must call javac directly using Runtime.exec(), then load the class data by subclassing ClassLoader and overriding findClass.

Answer 6

Yes, you can, but you need java compiler and not only java runtime. First you generate your source, save it and then use Dynamic class loading(tutorial http://tutorials.jenkov.com/java-reflection/dynamic-class-loading-reloading.html)

Answer 7

You can use javac (JDK is needed):
http://www.javaworld.com/javatips/jw-javatip131.html