Java Test UPDATED Exam Questions and CORRECT Answers

Java Test UPDATED Exam Questions and
CORRECT Answers
Signature: Method that contains the return type, parameters and name

Body: Lines between the open and closed curly brackets - CORRECT ANSWER - Define
signature and a body


Argrument - CORRECT ANSWER - Formal name for the integer inside the parentheses


To pass methods from a superclass to a subclass. It uses methods from the actor class -
CORRECT ANSWER - Explain inheritance & how it relates to the crab class


Void: Will not return any values

Non-void: Will return a value - CORRECT ANSWER - Difference between calling a
method with a void return type vs a non-void return type


Public void crabMove(); - CORRECT ANSWER - Write a method signature for the crab
class


Provides a template that all actors can use - CORRECT ANSWER - What is the purpose of
having a class called Actor if you cannot make an instance of it?


Actor is an abstract class in which you cannot create an instance - CORRECT ANSWER -
Why cant you right-click an Actor class and make an instance of it?


Method name: addAmount
Return value type: void

Parameters: 3 - CORRECT ANSWER - Method name for: Public void
addAmount(intamount);

, Return value type for: Public void play();


How many parameters for: Public void compare(int x, int y, int z);


Public void go(); - CORRECT ANSWER - Write a method signature for "go" that does not
have parameters nor returns a value


public int process (); - CORRECT ANSWER - Write a method signature for "process"
with parameters and returns a value of type "int"


Play(); - CORRECT ANSWER - Write a method call for "play"


if(isTouching(worm.class)
{
RemoveTouching(worm.class)

} - CORRECT ANSWER - Write an if statement that does something to a crab


Allows access to methods of a class. We use it to change the image of a class - CORRECT
ANSWER - What is a dot notation? and when do we use it?



Turn(Greenfoot.getRandomNumber(49); - CORRECT ANSWER - Write a method call
that will return an integer between 0 and 49


if(Greenfoot.getRandomNumber(100)(31)
{
turnGreenfoot.getRandomNumber(17)(31);

} - CORRECT ANSWER - Write an if statement that turns 17 degrees, but only 31
percent of the time