The Java long keyword is a primitive data type. It is used to declare variables. It can also be used with methods. It can hold a 64-bit two’s complement integer.
Should I use long or int?
Long is the Object form of long , and Integer is the object form of int . The long uses 64 bits. The int uses 32 bits, and so can only hold numbers up to ±2 billion (-231 to +231-1). You should use long and int , except where you need to make use of methods inherited from Object , such as hashcode .
What is long data type used for?
Remarks. Use the Long data type to contain integer numbers that are too large to fit in the Integer data type. The default value of Long is 0.
What does l mean in Long Java?
The L suffix tells the compiler that we have a long number literal. Java byte , short , int and long types are used do represent fixed precision numbers. This means that they can represent a limited amount of integers.
When should I use long?
We use long to talk about the length of something: It was three metres long and four metres wide. How long is the boat? This is such a long queue.
Can long have decimals?
Large Integers
Long variables can hold numbers from -9,223,372,036,854,775,808 through 9,223,372,036,854,775,807. Operations with Long are slightly slower than with Integer . If you need even larger values, you can use the Decimal Data Type.
What is a long data type Java?
long: The long data type is a 64-bit two’s complement integer. … In Java SE 8 and later, you can use the long data type to represent an unsigned 64-bit long, which has a minimum value of 0 and a maximum value of 264-1. Use this data type when you need a range of values wider than those provided by int .
Is long int 64-bit?
Windows: long and int remain 32-bit in length, and special new data types are defined for 64-bit integers.
Why would a program need to use the long integer data type?
Longer integers: long
The long data type stores integers like int , but gives a wider range of values at the cost of taking more memory. Long stores at least 32 bits, giving it a range of -2,147,483,648 to 2,147,483,647. Alternatively, use unsigned long for a range of 0 to 4,294,967,295.
Why do we use L Long?
By default value 2147483647 is considered by java compiler is int type. Internal type casting is done by compiler and int is auto promoted to Long type. Here we need to put suffix as L to treat the literal 2147483648 as long type by java compiler.
How do you use long value in Java?
Example 1
- import java.util.*;
- public class ScannerNextLongExample1 {
- public static void main(String[] args) {
- Scanner input = new Scanner(System.in);
- System.out.print(“Enter the Number you want: “);
- long num = input.nextLong();
- System.out.println(“Output value: “+(num * (num + 2)) / 2);
- input.close();
What is long variable?
Description. Long variables are extended size variables for number storage, and store 32 bits (4 bytes), from -2,147,483,648 to 2,147,483,647. If doing math with integers at least one of the values must be of type long, either an integer constant followed by an L or a variable of type long, forcing it to be a long.
Is Long same as int?
The long is a larger data type than int. The difference between int and long is that int is 32 bits in width while long is 64 bits in width.
How long is a long Java?
Primitive Data Types
| Data Type | Size | Description |
|---|---|---|
| byte | 1 byte | Stores whole numbers from -128 to 127 |
| short | 2 bytes | Stores whole numbers from -32,768 to 32,767 |
| int | 4 bytes | Stores whole numbers from -2,147,483,648 to 2,147,483,647 |
| long | 8 bytes | Stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 |
What is the difference between long and long in Java?
long is a primitive, which must have a value. Simple. Long is an object, so: it can be null (meaning whatever you like, but “unknown” is a common interpretation)