Right way of Creating Java Module

Below given are two ways to build modules in IntelliJ9

Way 1

    File imlFile = new File(projectDir, moduleName);
    Module module = null;
     module = moduleManager.findModuleByName(moduleName);
     if (module == null) {
           if (imlFile.exists()) {
                   imlFile.delete();
            }
                module = moduleManager.newModule(imlFile.getAbsolutePath(), StdModuleTypes.JAVA);
      }
      ModifiableRootModel modifiableModel = ModuleRootManager.getInstance(module).getModifiableModel();
      //Set content entry path
      //Set JDK
      modifiableModel.commit();  

Way 2

     File imlFile = new File(projectDir, moduleName);   
     JavaModuleBuilder modulebuilder = new JavaModuleBuilder();
     ModifiableModuleModel model  =ModuleManager.getInstance(prj).getModifiableModel();
     modulebuilder.setName(projectName);
     modulebuilder.setModuleFilePath(newProjectImplimentationFilePath);
    //Set content entry path
    //Set JDK
    modulebuilder.createModule(model);
     modulebuilder.setModuleJdk(projectjdk);
     model.commit();

Ambiguity is in setting compilerOutput path
1. In way 1, it is done by CompilerModuleExtension.getInstance(module).setCompilerOutputPath(compilerOutputPath) but is giving error
     Configuring project failed for unexpected reason
          java.lang.AssertionError: Writable model can be retrieved from writable ModifiableRootModel        
               at com.intellij.openapi.roots.impl.CompilerModuleExtensionImpl.a(CompilerModuleExtensionImpl.java:225)
              at com.intellij.openapi.roots.impl.CompilerModuleExtensionImpl.setCompilerOutputPath(CompilerModuleExtensionImpl.java:196)
              at com.intellij.openapi.roots.impl.CompilerModuleExtensionImpl.setCompilerOutputPath(CompilerModuleExtensionImpl.java:186)
              at com.yolus.intellij.yde.ProjectConfigurer$YDEModule.configureModuleOrFail(ProjectConfigurer.java:340)
     Should the CompilerModuleExtension be used after the ModifiableModuleModel commit method or it does not matter

2. In way 2, it is done by modulebuilder.setCompilerOutputPath(path)

Please resolve.