Unexpected symbol `void' in class, struct, or interface member declaration

 using UnityEngine;
 using System.Collections;
 
 public class PlayerHealth : MonoBehaviour {
     public int maxHealth = 100;
     public int curHealth = 100;
     
     public float healthBarLengh;
 
         // Use this for initialization
     void Start () {
         healthBarLengh = Screen.width / 2;
         
     }
     
     // Update is called once per frame
     void Update () {
         
     }
     
     void OnGUI() {
         GUI.Box (new Rect (10, 10, healthBarLengh, 20), curHealth + "/" + maxHealth);
     }
     
     public void AddjustCurrentHealth(int adj) {
         curHealth += adj;
         
         if(curHealth < 0)
             curHealth = 0;
         
         if(curHealth > maxHealth)
             curHealth = maxHealth;
         
         if(maxHealth < 1)
             maxHealth = 1;
         
         healthBarLengh = (Screen.width / 2)* (curHealth / (float)maxHealth);
     }
 }