Web Reference: 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 Nov 11, 2025 · Variable Name: A unique identifier following Java naming rules. Value: The actual data assigned to the variable. How to Declare Java Variables? The image below demonstrates how we can declare a variable in Java: In the Java programming language, the terms "field" and "variable" are both used; this is a common source of confusion among new developers, since both often seem to refer to the same thing.
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