Counter.java // Counter.java interface Counter { void increment (); int getCount (); } The Counter interface introduces a counter type into source code. When a class implements Counter ...

Book(String title) { setTitle(title); setPubYear(-1); ++count; } Book(String title ... Duplicate code adds unnecessary bulk to the class. Java provides a way to avoid this duplication by offering ...

Imagine you are an expert object-oriented Java developer who meticulously crafts code the way an artist cares for their masterpiece. You believe clean code is an absolute necessity. Classes with clear ...