OCP Oracle Certified Professional Java SE 17 Developer Practice Tests

Chapter 2Controlling Program Flow

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

• Controlling Program Flow
  • Create program flow control constructs including if/else, switch statements and expressions, loops, and break and continue statements

1. Which statements are true of the following code? (Choose two.)

   public class Penguins {
       public static void main(String[] args) {
          var pen = new Penguins();
          pen.length("penguins");
          pen.length(5);
          pen.length(new Object());
      }
      public void length(Object obj) {
        if (obj instanceof String x) 
           System.out.println(x.length());
      } }
   

   1. The code compiles as is.
   2. One line causes compiler errors.
   3. Two lines cause compiler errors.
   4. If any lines that do not compile are removed, ...