code: public static FileWriter createSrcFile(String name, String packageName, String outDir) throws IOException
     {
        String directory = "src" + File.separatorChar + "main" + File.separatorChar + "java";
  
        return createPackageFile(name, packageName, directory, outDir);
     }
docs: Create source file
  
  @param name        The name of the class
  @param packageName The package name
  @param outDir      output directory
  @return The file
  @throws IOException Thrown if an error occurs