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RRB Junior Engineer / DMS / CMA 2019 · Question 3606 of 3719

Which of the following is NOT a java primitive type?

  1. Ashort
  2. Blong
  3. Clong doubleCorrect
  4. Dboolean

Answer: C. long double

Explanation

Concept The eight primitive data types supported by the Java programming language are: byte: The byte data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive). short: The short data type is a 16-bit signed two's complement integer. It has a minimum value of -32,768 and a maximum value of 32,767 (inclusive). int: By default, the int data type is a 32-bit signed two's complement integer, which has a minimum value of -231 and a maximum value of 231-1. In Java SE 8 and later, you can use the int data type to represent an unsigned 32-bit integer, which has a minimum value of 0 and a maximum value of 232-1. . long : The long data type is a 64-bit two's complement integer. The signed long has a minimum value of -263 and a maximum value of 263-1. In Java SE 8 and later, you can use the long data type to represent an unsigned 64-bit long, . float: The float data type is a single-precision 32-bit IEEE 754 floating point. double: The double data type is a double-precision 64-bit IEEE 754 floating point. For decimal values, this data type is generally the default choice. boolean: The boolean data type has only two possible values: true and false. char: The char data type is a single 16-bit Unicode character. It has a minimum value of '\u0000' (or 0) and a maximum value of '\uffff' (or 65,535 inclusive). Hence there are 8 primitive data types, that is, byte, short, int, long, float, double, boolean and char Additional Information Non-primitive data types - such as String, Arrays, ArrayList, Integer, Long, etc.

Source: RRB JE 2019 (CBT 2) (IT) Previous Year Paper (30 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary

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