Web Reference: Oct 3, 2025 · In Java, variables are containers that store data values, such as numbers, text, or Boolean values. Java variables are categorized into different types based on their scope, lifetime, and usage, helping programmers manage data efficiently and write organized, maintainable code. Java Variables Variables are containers for storing data values. In Java, there are different types of variables, for example: String - stores text, such as "Hello". String values are surrounded by double quotes int - stores integers (whole numbers), without decimals, such as 123 or -123 A variable's data type determines the values it may contain, plus the operations that may be performed on it. In addition to int, the Java programming language supports seven other primitive data types.
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