What Is the Size of Long Data Type in Java?
When working with data in Java, it is important to understand the size of different data types. The size of a data type determines how much memory it occupies in the computer’s memory. In this article, we will explore the size of the long data type in Java.
The Long Data Type
In Java, the long data type is a 64-bit signed two’s complement integer. It is used to store whole numbers that may range from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. The keyword used to declare a variable of type long is long.
Size of Long Data Type
The size of the long data type in Java is 8 bytes, which equals 64 bits. This means that each variable declared as a long will occupy 8 bytes of memory.
Usage and Examples
The long data type is commonly used when dealing with large numbers that fall outside the range of other integer types such as int. Here are some examples:
- To store a person’s age:
long age = 25L;
long timestamp = System.currentTimeMillis();
long factorial = calculateFactorial(20);
In conclusion, the long data type in Java is used to store 64-bit signed two’s complement integers. It occupies 8 bytes of memory, making it suitable for handling large numbers beyond the range of other integer types. Understanding the size of different data types is essential for efficient memory management and optimizing performance in Java programming.