APCS Review Project

Your assignment is to make a study guide for all the information that we’ve covered so far. You can make fold over notes, or you can make a study java program (extra credit).

Topics to cover (grouped by the lesson they appear in the ICT curriculum)

Lesson 1:

• What’s the difference between a compile-time and run-time error?

Lesson 2:

• What’s the difference between a class and an object?
• When do I use new?
• What is the main purpose of the constructor?
• When designing a class, nouns become____?
• When designing a class, verbs become____?

Lesson 3:

• What types of data are stored in the following primitives:
• int
• boolean
• char
• double
• String
• What are the rules for naming identifiers in Java?
• What’s the order of precedence for the math operators?
• What’s the modulus operator (%)for?
• What’s the difference if you divide by ints or doubles?
• What do the following assignment operators do?
• +=
• -=
• ++
• –-
• What’s the difference between ++a and a++

Lesson 4:

• What are getters and setters?
• What’s a method signature?
• What does void mean?
• When do I use return?
• What is meant by scope?

Lesson 5:

• What is overloading a method?

Lesson 6

• What does final mean?
• What does static mean?
• Write all fields and methods for the Random class. Explain what each is for:
• Write all fields and methods for the Math class. Explain what each is for:

Lesson 7

• How do you use the scanner class? How does it read in different types of data?
• How do you use printf to format you output?

Lesson 8

• When do you use a break statement?
• What’s the difference between && and ||?

Lesson 9

• What is the basic principle of recursion?

Lesson 10

• Write down all the methods of the String class and explain what they do.
• What does null mean?
• What’s the difference between == and .equals()? When do I use which?
• Explain immutability of Strings.

Lesson 11

• When should I use implements and when do I use extends?
• What’s the difference between inheritance and an interface?

Lesson 12

• When should I use a for loop? When should I use a while?
• Give an example of using a for loop to traverse a:
• String
• Array
• ArrayList

Lesson 15

• Write down all the methods of the ArrayList class and explain what they do.
• How do you declare an ArrayList using the <>’s

Lesson 16

• Give an example of using a for loop to traverse an array.
• Give an example of using a for each loop to traverse an array.
• What’s are the differences between an array and an ArrayList?

Diagrams:

• Draw an example of a method. Label and explain the following (Lesson 2 & 4):
• Modifiers
• Return type
• Method name
• Parameters
• Method body
• Make a diagram to explain the scope test example (Lesson 4, Section E #5)
• Draw an example of a class definition. Label the following (Lesson2 & 5):
• Constructor
• Instance variables (Attributes)
• Methods
• Make a drawing of a recursive method (Lesson 9). Label:
• The recursive call
• The base case

Multiple Choice Questions:

• Create 3 of your own multiple choice question.
• Each question should have 5 possible answers
• Answers should be distracting
• Please write an answer key explaining which answer is correct and give an explanation.