AP Computer Science A Unit 1

Which of the following does NOT describe a Java Class?

• The container for all of our programs

• One of the primitive data types

• A blueprint that defines the characteristics of an

  object

• The class title must match the name of the file in

  which you are working

Which is NOT a function of the Java compiler?

• Checks comments for grammar and spelling

• Validates syntax of program code

• Translates code to machine language

• Links in external libraries

What is the origin of the term "computer bug"?

• It was named after Computer science pioneer Grace Hopper ("grasshopper")

• The first bug was found by a programmer who drove a Volkswagen Beatle

• Finding computer bugs makes programmers nauseous (stomach bug)

• A moth shorted out the early Mark II computer

What does the println method do differently than print?

• Sends output to a printer

• Keeps output on the current line

• Forces output to the next line

• Allows you to omit quotation marks

Which is the correct syntax for defining a new Scanner variable?

• Scanner scan = new Scanner(System.in);

• System.in.scan(Scanner);

• Scanner = new.scan.System;

• scan = System.in.nextScan();

Which of the following is a valid variable name in Java?

• first name

• 99problems

• print

• a_1_sauce

Assuming that n is a variable for someone's name, which of the following commands is correct?

• System.out.println("Happy Birthday n");

• System.out.println("Happy Birthday + n");

• System.out.println("Happy Birthday " & n);

• System.out.println("Happy Birthday " + n);

Which term refers to the possible values that can be stored in a variable?

• domain

• function

• sequence

• range

What value is returned by Integer.MAX_VALUE ?

• 32767

• 2147483647

• 9223372036854775807

• 2047

Which term best describes the following line of code:

final double PI = 3.1415926536;

• class

• constant

• method

• reference