CS Unit 1 Quiz Review

Which of these is a valid Karel command in Java?

• move();

• MOVE

• move;

• 
  move()

Which of these is a valid Karel command in Java?

• turnLeft();

• turnleft();

• turnLeft()

• TurnLeft

public class FunKarel extends Karel
{
public void run()
{
move();
putBall();
move();
}
}

What is the name of this class?

• 
  Karel

• FunKarel

• Run

• SuperKarel

What is the name of the method that gets called to start a Java Karel program?

• go()

• start()

• run()

• move()

Which is the correct class signature for a Karel program named CleanupKarel?

• public class CleanupKarel extends Karel

• public class CleanupKarel < Karel

• public CleanupKarel

• CleanupKarel extends Karel

Which of these methods will create a method called turnRight that will have Karel turn left three times?

• private void turnRight

  {

  turnLeft();

  turnLeft();

  turnLeft();

  }

  
  

• private void turnRight() { turnLeft turnLeft turnLeft }

• private void turnRight() { turnLeft(); turnLeft(); turnLeft(); }

• private turnRight() { turnLeft(); turnLeft(); turnLeft(); }

What is a method in Karel?

• A method is the name for an entire Java program

• 
  A method is something that lets you repeat a command a fixed number of times

• A method is a command that Karel can do. It has a name and a set of instructions.

• 
  A method is the way that you leave a note for someone else who reads the code.

What is top down design?

• Top down design is a way of designing your program by starting with the biggest problem and breaking it down into smaller and smaller pieces that are easier to solve.

• Top down design is a way that you can create designs on a computer to put on a web page

• 
  Top down design is a way of designing your programs starting with the individual commands first

• Top down design is a way to use loops and classes to decompose the problem

Which of these show the proper format for a Java comment?

• /*

  • *

  • *My java comment

  • */

• /**

  • *

  • * My java comment

  • */

• // My java comment

• All of these are correct

Which of these is a valid way to write a single line comment in Java?

• // This is a comment

• ++ This is a comment

• This is a comment //

• /* This is a comment