Java HashSet not using Comparator of custom object

Question

Before someone asks, I've already read through the responses under this similar posting (.Contains() method not calling Overridden equals method) and was still unable to fix my issue;

I created a custom object called Tuple. Here it is:

    class Tuple implements Comparable<Tuple> {
         public int x = -1;
         public int y = -1;
         public int val = -1;
    
         public Tuple(int x, int y, int val) {
             this.x = x;
             this.y = y;
             this.val = val;
         }
    
         @Override
         public boolean equals(Object o) {
             if (o instanceof Tuple) {
                 Tuple o2 = (Tuple) o;
                 if(this.x == o2.x && this.y == o2.y) {
                     return true;
                 }
             }
             return false;
         }
    
         @Override
         public int compareTo(Tuple t) {
             if(this.val < t.val) {
                 return -1;
             } else if(this.val > t.val) {
                 return 1;
             } else {
                 return 0;
             }
         }
    
         @Override
         public String toString() {
             return "(" + x + "," + y + "," + val + ")";
         }
     }

I created a HashSet and added objects to it, checking for equality:

HashSet<Tuple> set = new HashSet<Tuple>();
Tuple t1 = new Tuple(2, 1, 10);
Tuple t2 = new Tuple(2, 1, 10);
test1.add(t1);
System.out.println(test1.contains(t1));
System.out.println(test1.contains(t2));
System.out.println(t1.equals(t2));
System.out.println(t2.equals(t1));
System.out.println(t1.equals(t1));
System.out.println(t2.equals(t2));

This is the output:

true
false
true
true
true
true

I am expecting test1.contains(t2) to produce true since t1 and t2 are equal. As you can see, I made sure to check both reflexivity and symmetry for equals.