!7

p-subst {
  File srcDir = makeTempDir();
  File classesDir = makeTempDir();
  try {
    saveTextFile(newFile(srcDir, "main.java"), myJavaSource());
    for (int i = 1; i <= 1000; i++) {
      print("Attempt " + i);
      compileWholeDir(srcDir, myLibraryFiles(), classesDir);
    }
  } finally {
    deleteDirectory(srcDir, true, false);
    deleteDirectory(classesDir, true, false);
  }
}