(Solved): Please help fix my code.  This is the question and code Given the IntNode class, define the fin ...

Please help fix my code. 

This is the question and code

Given the IntNode class, define the findMax() method in the CustomLinkedList class that returns the largest value in the list or returns -99 if the list is empty. Assume all values in the list are non-negative.

Ex: If the list contains:

head -> 14 -> 191 -> 186 -> 181

findMax(headObj) returns 191.

Ex: If the list contains:

head -> 

findMax(headObj) returns -99.

CustomLinkedList.java

public class CustomLinkedList {
   
   public static int findMax(IntNode headObj) {
      IntNode temp = headObj;
      int ans = -99;
   
      while(temp.getNext() != null){
          if(temp.getNodeData() > ans){
              ans = temp.getNodeData();
          }
          temp = temp.getNext();
      }
      
      // return the ans.
      return ans;
   }
   
   public static void main(String[] args) {
      IntNode headObj; 
      IntNode currObj;
      IntNode lastObj;
      int i; 
      boolean result;
      
      // Create head node
      headObj = new IntNode(-1); 
      lastObj = headObj;
      
      // Add nodes to the list
      for (i = 0; i < 20; ++i) { 
         currObj = new IntNode(i);         
         lastObj.insertAfter(currObj); 
         lastObj = currObj;
      }    
      
      max = findMax(headObj);
      System.out.println(max);
   }
}

I have two errors which are: