What is a variable?

What is a variable?

• A. Named storage that a Java program can manipulate.
• B. A constant value that never changes.
• C. A special type of method.
• D. A syntax construct for loops.

Answer: (A)

Variables are named storage locations in memory that a Java program can manipulate. They hold data values and can be read from and updated as the program runs. In Java you declare a variable by giving it a type and a name, then you assign it a value. For example, int score = 0; score = score + 1; Now score has a new value. This ability to change the stored value is what makes a variable useful. It’s different from a constant, which is fixed after initialization, and from a method or a loop construct, which serve different roles in code.

Variables are named storage locations in memory that a Java program can manipulate. They hold data values and can be read from and updated as the program runs. In Java you declare a variable by giving it a type and a name, then you assign it a value. For example, int score = 0; score = score + 1; Now score has a new value. This ability to change the stored value is what makes a variable useful. It’s different from a constant, which is fixed after initialization, and from a method or a loop construct, which serve different roles in code.