Greenfoot Ch 3 Practice

12 Questions | By Tcarteronw | Updated: Mar 21, 2022 | Attempts: 502

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Practice over Ch 3 and notes

Questions and Answers

1.

Using a dot between a class name and a method name is called ____ ____.
2.

What class is this method from? static int getRandomNumber(int limit)
3.

Write a method call that will return a random integer between 0 and 10.
- A.
  
  Greenfoot.getRandomNumber(10)< 1;
- B.
  
  Greenfoot.getRandomNumber(100) < 10;
- C.
  
  Greenfoot.getRandomNumber(10);
- D.
  
  Greenfoot.getRandomNumber(10)+1;
4.

Methods that belong to classes (as opposed to objects) are marked with the keyword static in their signature.
- A.
  
  True
- B.
  
  False
5.

How would I write a random number that would show numbers from 1 to 8?
- A.
  
  Greenfoot.getRandomNumber(8) + 1;
- B.
  
  Greenfoot.getRandomNumber(8);
- C.
  
  Greenfoot.getRandomNumber(1) + 8;
6.

Write an if statement that tells an object to turn 17 degrees, but only 31 percent of the time.
- A.
  
  if (Greenfoot.getRandomNumber(100)
- B.
  
  if (Greenfoot.getRandomNumber(100)
- C.
  
  if Greenfoot.getRandomNumber(100)
7.

This statement tells an object to turn a random number of degrees between -20 and 20. Greenfoot.getRandomNumber(-20, 20);
- A.
  
  True
- B.
  
  False
8.

It is good naming convention to name a class in Greenfoot “crab” .
- A.
  
  True
- B.
  
  False
9.

Single line comment tags are written with ____
10.

Which are correct ways to indicate 25%
- A.
  
  GetRandomNumber(16) < 4
- B.
  
  GetRandomNumber(100) < 25
- C.
  
  GetRandomNumber(4) < 1
11.

Strings are indicated with double quotes.
- A.
  
  True
- B.
  
  False