In Java, when you perform arithmetic operations on primitive types, they are promoted to at least int if they are smaller. In this case, the byte (x) and short (y) are added together, resulting in an int value of 25. Since the class Test does not have a method process that accepts an int, the Java runtime will look for a suitable method which can take an argument that can be assigned from int. The only method that matches this requirement is process(Object v), because an int can be autoboxed to an Integer which is an Object. Thus, the method process(Object v) is called and the output is 'Object value 25'.