There are a few ways to delete an object in Java. The easiest way is to use the delete() method. This method deletes the object and returns a boolean value. If the deletion was successful, the return value is true; if not, the return value is false. To delete an object using the Collections class, you can use the remove() method. This method removes the object from the collection and returns a boolean value. If the deletion was successful, the return value is true; if not, the return value is false. To delete an object using a specific key in a collection, you can use the get() method. This method gets information about an object and returns a reference to it. You can then use this reference to delete the object using the delete() method.