Literals

Item

Description

Array Literal

Use square brackets with one or more values separated by a comma.

Example:

[ 1, 2, 3 ]

Note: It is always recommended to use all the entries in the array of same class for correct comparisons.

Big Decimal Literals

Use 1 or more digits from 0 to 9, followed by a decimal point and then one or more digits from 0 to 9 suffixed with b or B.

Example:

442.0b

42.0B

Big Integer Literals

Use 1 or more digits from 0 to 9 suffixed with h or H.

Examples:

42h or 42H

Boolean Literals

Use the word true or false.

Examples:

ACTIVE_FL == true or ACTIVE_FL == false

Double Literals

Use 1 or more digits from 0 to 9, followed by a decimal point and then one or more digits from 0 to 9 suffixed with d or D.

Examples:

42.0d

42.0D

Float Literals

Use 1 or more digits from 0 to 9, followed by a decimal point and then one or more digits from 0 to 9, optionally followed by f or F.

Examples:

42.0

42.0f

Integer Literals

Use 1 or more digits from 0 to 9.

Examples:

42

100

Long Literals

Use 1 or more digits from 0 to 9 suffixed with l or L.

Examples:

42l

42L

Map Literal

Use curly brackets ({ }) with one or more sets of key: value pairs separated by a comma (,).

Example:

{ "one" : 1, "two" : 2, "three" : 3, "more": 4 }

Note: It is always recommended to use all the values in the map of same class for correct comparisons.

Null Literal

Use the word null.

Example:

MY_COLUMN == null

Real literals - exponent support

Use standard Java exponent notation (that is, suffix the number with e or E followed by the sign + or - followed by one or more decimal digits).

Examples:

42.0E-1D

42.0E+3B

Set Literal

Use curly brackets ({ }) with one or more values separated by a comma (,).

Example:

{ "one" , “two”, "three"}

Note: It is always recommended to use all the entries in the set of same class for correct comparisons.

String Literals

Use either the single quote (') or double quotes (").

For example: "Advantage" and 'Advantage' are equivalent.