When we want to overload a method, we need to make sure that the method name remains same. But method signature can vary in the number or datatype of arguments or in the order of arguments.

When we want to override a method, we ensure that the method is not throwing checked exceptions that are new or higher than those declared by the overridden method. Also we make sure that the method name, arguments and return type remain the same.

Also we cannot override Static and Final methods in Java.