OCA / OCP Java SE 8 Programmer Practice Tests

Chapter 11Java Class Design

THE OCP EXAM TOPICS COVERED IN THIS PRACTICE TEST INCLUDE THE FOLLOWING:

• Java Class Design
  • Implement encapsulation
  • Implement inheritance including visibility modifiers and composition
  • Implement polymorphism
  • Override hashCode, equals, and toString methods from Object class
  • Create and use singleton classes and immutable classes
  • Develop code that uses static keyword on initialize blocks, variables, methods, and classes

1. Which answer choice can replace line 6 so the code continues to produce the same output?

   3:   List<String> rug = new ArrayList<>();
   4:   rug.add("circle");
   5:   rug.add("square");
   6: System.out.println(rug); ...