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Java variable

In Java Variables are used for storing values such as numeric values, characters, character strings, or memory addresses.

In Java a variable starts with the data type, followed by the name of the variable.

Example :
int a=10;
Here int is the data type name.
a is the variable name and 10 is literal type integer.
Meaning, the a variable store the integer values 10 here.

Rules for Naming Variables in Java

  • Variables in Java are case-sensitive.
  • You can start a variable name a letter, $ or _.
  • Whitespace are not allowed in java variable.
  • Note: It is good to start the variable name with a letter.