Greenfoot Java Classes

The *; after import greenfoot does what?

• Imports all the classes for the greenfoot coding package.

• Tells greenfoot to allow code to be entered.

• Limits the amount of code you can write.

• Names the code Java.

Which one is a correctly coded comment?

• /**

  * Im a great comment

  */

• /***

  ** Im a great comment.

  *//

• /

  *Im a great comment.

  */

• /**

  Im a great comment.

  */

What are the yellow boxes?

• functions

• methods

• variables

• algorithms

What does public void turtle extend to?

• the turtle world

• turtle class

• actor class

• greenfoot

What sets different methods apart or the actor class?

• [ ]

• " "

• { }

• ( )

Which of the following is correctly coded?

• public void act()

  {

  move(4);

  }

• public Void act():

  {

  move(4);

  }

• Public Void Act()

  {

  move(4);

  }

• public void act();

  {

  move(4)

  }

Which method allows for you to use keyboard controls for an actor?

• checkKeys();

• CheckKeys();

• checkkeys();

• checkKey{};

What statement checks to see if checkKeys are down?

• if ( Greenfoot.isKeyDown("left"))

• if ( greenFoot.isKeyDown(left))

• if ( Greenfoot.isKeyDown(left))

• if ( Greenfoot.iskeydown("left))

Which are all the possible ways to write comments?

• // comment

• /*

• /**

• /*/

Why are some comments blue while others are light gray color?

• The blue explains the code while the gray gives explanation to the programmer maintaining the coded program.

• There is no difference or reason.

• The gray are instructions for the code reader, while blue is just for the player.

• Blue comments are for the programmer, the gray is for the teacher.