A tuple is a data type that is similar to a record, except that the elements are

Question

A tuple is a data type that is similar to a record, except that the elements are not named. True False An associative array is an unordered collection of data elements that are indexed by a. a defined, enumerated list. b. memory locations. c. the Dewey Decimal System. d. an equal number of values called keys, which may be strings or numerics. The values of enumeration constants a. can be explicitly assigned any integer literal in the type's definition. b.are randomly assigned by the compiler. c. are mapped to memory locations, but not any specific data values. d. are always mapped to integers beginning at 0,1, 2,... Which of the following are signed integers in Java? a. bit b. byte c. double d.int e. boolean f. short g. float h. long In Java, string objects are mutable. True False

Explanation / Answer

6)True

7)

Ans)d

A map is like an array, but the indices for a map are arbitrary objects, not integers. In a map, an object that serves as an "index" is called a key.

8)

Ans)a

An enum type is a special data type that enables for a variable to be a set of predefined constants. The variable must be equal to one of the values that have been predefined for it.

9)

Ans)b,d,f,h

Java defines four integer types: byte, short, int, and long. All of these are signed, positive and negative values.

10)

Ans) False

String Objects are not mutable.i.e we cant change the content of the string.so we called this as immutable.

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