Definition of Quatrain. A quatrain is a stanza in a poem that has exactly four lines. Some quatrains comprise entire poems, while others are part of a larger structure. Quatrains usually use some form of rhyme scheme, especially the following forms: AAAA, AABB, ABAB, and ABBA.
Based on the data type of a variable, the operating system allocates memory and decides what can be stored in the reserved memory. Therefore, by assigning different data types to variables, you can store integers, decimals, or characters in these variables. There are two data types available in Java â.
Declare a String in JavaScript. Like other JavaScript variables, you do not have to declare strings before being able to use them in your scripts. But declaring all variables makes your scripts easier to understand and maintain. Some JavaScript libraries even require all variables to be declared before they can be used.