Can't execute javac or other command line applications in Java using ProcessBuilder under Windows 7

Question

I\'m trying to execute javac from Java using ProcessBuilder but i get no output and nothing happens. I tried reading the input stream (as there is a bug where the process hangs

Answer 1

The string array that you pass to ProcessBuilder should contain one argument per array element, not everything in a single big string.

Try this:

String[] commands = new String[] 
{
  "C:\\Windows\\System32\\cmd.exe", 
  "/c", 
  "C:\\\"Program Files\"\\Java\\jdk1.6.0_23\\bin\\javac.exe"
};

Btw: there is no need to call cmd.exe, you can pass javac.exe directly to the ProcessBuilder

ProcessBuilder builder = new ProcessBuilder(
   "C:\\\"Program Files\"\\Java\\jdk1.6.0_23\\bin\\javac.exe", "\\Path\\To\\MyClass.java"
);