Variables are containers for storing data values. In Java, each variable has a specific type, which determines the size and layout of the variable’s memory, the range of values that can be stored, and the set of operations that can be applied.
Source Code
int myNumber = 10; // Integer variable
String myString = "Hello"; // String variable
Always choose the right data type for your variables to ensure your program uses resources efficiently and to make your code more understandable.