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Variables and Data Types

In Java, variables are used to store data values. Each variable must be declared with a data type.

Common Data Types:

  • int - for integers (e.g., int age = 25;)
  • double - for floating-point numbers (e.g., double price = 19.99;)
  • char - for single characters (e.g., char grade = 'A';)
  • boolean - for true/false values (e.g., boolean isJavaFun = true;)
  • String - for text (e.g., String name = "Harshal";)
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