Compile a .java File Programmatically [closed]

I want to create a program that can Compile a .java file to a .class file like it is done on this website: Innovation website

My questions are:

• Is there an library i can use to do this?
• Where can I get this Library?
• If there isn’t a library for this then how can i do this?

Answer

You can do this using the Process class as

Process pro=Runtime.getRuntime().exec("javac FileName.java", null, new File("path"));