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. An integer literal is of type long if it ends with the letter L or l; otherwise it is of type int. It is recommended that you use the upper case letter L because the lower case letter l is hard to distinguish from the digit 1. Values of the integral types byte, short, int, and long can be created from int literals. Values of type long that exceed t... 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
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