java Test UPDATED ACTUAL Exam Questions and CORRECT Answers

java Test UPDATED ACTUAL Exam Questions and CORRECT
Answers


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


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


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


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



if(isTouching(worm.class)

{

RemoveTouching(worm.class)

} - 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 - What is a dot
notation? and when do we use it?


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



if(Greenfoot.getRandomNumber(100)(31)

{

turnGreenfoot.getRandomNumber(17)(31);
} - Write an if statement that turns 17 degrees, but only 31 percent of the time

, if(Greenfoot.getRandomNumber(14)

{

*something*
} - Write an if statement that turns an object a random number of degrees between 0 and 14



if(Greenfoot.getRandomNumber(20)(-20)

{

turn(3);

} - Write an if statement that turns an object a random number of degrees between -20 and 20



== != > < <= >= - Write the symbols for 6 different comparisons operators


Actor - What class is Worm a subclass of?



Helps another cass look for the worm to eat it. - What is the rationale behind making a separate
method called "lookForWorm"?



Needs a capital "p" - What is wrong with naming a class in Greenfoot "pig"?



Comments are notes that don't effect your coding - What is a comment?


-Allows us to edit later on

- Help us remember something we might forget - Why do we use comment sin our programs?



// = Single line comment
/*comment*/ = multi-line comment - Write two different types of comments below and what
their use is