Java Code
I can’t make this code work ,, help me please

private BinaryNode<String> remove(String x, BinaryNode<String> t) {
        if (t == null)
            return t;
        
        int compareResult = x.compareTo(t.element);
        
        if (compareResult < 0)
            t.left = remove(x, t.left);
        
        if (compareResult > 0)
            t.right = remove(x, t.right);
        
        else if (t.left != null && t.right != null) { 
            t.element = findMin(t.right).element;
            t.right = remove(t.element, t.right);
        }
        else
            t = (t.left != null) ? t.left : t.right;
        
        return t;
    }

i tried importing java util line
import java.util.*;

but don’t know how to make it run ,, keep marking BinaryNode as unknown