Learning phase output target

Package com.cheng; 

Import java.util.Random;
 Import java.util.Scanner; 

// three stages of learning objectives   
public  class LearingAims { 

    static Scanner SC = new new Scanner (the System.in);
     // There are three stages of learning 
    public learnStage the Stage; 

    // Ll: big data engineer
     // L2 of; large data mining engineer
     // L3: large data architect 
    public  static  void the doWhat (the Stage learnStage) {
 //            the Stage = Me (the Stage) new new the Random () the Next. (. 3); 

        Switch (learnStage) { 

        Case Ll: 
            System.out.println ( "target output of the first phase of the study:" ); 
            System.out.println ( "big data development engineer" );
             BREAK ;
         Case L2 of: 
            System.out.println ( "output of the second phase of the study target: " ); 
            System.out.println ( " big data mining engineers " );
             BREAK ;
         Case L3: 
            System.out.println ( " the output of the third stage of the learning targets " ); 
            System.out.println ( " big data architect " );
             BREAK ;

        }

    }

    public static void main(String[] args) {

        System.out.println ( "Please select the target content of several phases: (Ll, L2 of, L3)" ); 
        String the Choose = sc.next ();
         IF ( "Ll" .equalsIgnoreCase (the Choose)) { 
            the doWhat (Stage.L1); 

        } the else  IF ( "L2 of" .equalsIgnoreCase (the Choose)) { 
            the doWhat (Stage.L2); 
        } the else  IF ( "L3" .equalsIgnoreCase (the Choose)) { 
            the doWhat (Stage.L3); 
        } the else { 
            System.out.println ( "input error" ); 
        } 
    } 

}

Enum class

the package of comcheng; 

, public  the ENUM Stage { 

    as the L1, L2, the proprioceptive, to an L3; 
}