You should provide inner class instance into Arrays.sort to compare points from view of parent class instance. To do it you should not create new instance in main() function, but get it from Point instance. So, in main function you should use something like this: Point pivot; … // set up pivot point here Arrays.sort(myPoints, … Read more
Your problem is that while the generic parameter of TreeNode is Comparable, the class itself is not. Change this: public static class TreeNode<E extends Comparable<E>> { To this: public static class TreeNode<E extends Comparable<E>> implements Comparable<TreeNode<E>> { Or if you don’t require the generic type to also be Comparable: public static class TreeNode<E> implements Comparable<TreeNode<E>> … Read more
To use java.util.PriorityQueue, your class need to implement Comparable or specify Comparator when create an instance of PriorityQueue. The elements in queue will be sorted from low value to high value, the element will be evaluated by Comparator.compare or Comparable.compareTo method. In your case, your class Person implements Comparable<Person>, you have to determine the order … Read more
If you want to know just if an object is equal to another you have to implemet the equals method (which doesn’t requiere you to declare any interface, every class can do it) @Override public boolean equals(Object o) { CompararListas other = (CompararListas) o; return … } with this method you can return what makes … Read more