1) What is the data type used to store whole numbers in Java? a) float b) boolean c) string d) int 2) Which data type is used to store decimal numbers in Java? a) double b) float c) int d) boolean 3) What is the data type used to store single characters in Java? a) char b) boolean c) string d) int 4) Which data type is used to store true or false values in Java? a) string b) boolean c) int d) double 5) What is the data type used to store text in Java? a) Integer b) Boolean c) String d) Float 6) Which data type is used to store a group of related data items in Java? a) list b) array c) set d) tuple 7) What is the data type used to store numbers with a fractional part in Java? a) int b) boolean c) float d) double 8) Which data type is used to store a single character or ASCII value in Java? a) char b) boolean c) int d) String 9) Which data type is used to store large decimal numbers with high precision in Java? a) Long b) Double c) Float d) BigDecimal 10) Which of the following does NOT describe a Java Class? a) The container for all of our programs. b) A blueprint that defines the characteristics of an object. c) One of the primitive data types d) The class title must match the name which you are workingof the file in. 11) Which is NOT a function of the Java compiler? a) Checks comments for grammar and spelling b) Translates code to machine language c) Validates syntax of program code d) Links in external libraries 12) What does the println method do differently than print? a) Sends output to a printer b) Forces output to the next line c) Keeps output on the current line d) Allows you to omit quotation marks 13) Which of the following is a valid variable name in Java? a) first name b) print c) 99problems d) a_1_sauce 14) Assuming that n is a variable for someone's name, which of the following commands is correct? a) System.out.println("Happy Birthday n"); b) System.out.println("Happy Birthday " & n); c) System.out.println("Happy Birthday + n"); d) System.out.println("Happy Birthday " + n); 15) What is the output of this Java code snippet? int a = 9; double b = a / 2.0; system.out.println(b); a) 4 b) 4.5 c) 4.0 d) 5

AP CSA Data Types

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