Frequent question: What is long number in Java?

long: The long data type is a 64-bit two’s complement integer. The signed long has a minimum value of -263 and a maximum value of 263-1. 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.

What is 10L in Java?

When you type “return 10L” it means that you are telling the compiler that the value want returned is a long integer (32-bit) as opposed to int (16-bit).

How do you declare a long value in Java?


  1. Long data type is a 64-bit signed two’s complement integer.
  2. Minimum value is -9,223,372,036,854,775,808(-2^63)
  3. Maximum value is 9,223,372,036,854,775,807 (inclusive)(2^63 -1)
  4. This type is used when a wider range than int is needed.
  5. Default value is 0L.
  6. Example: long a = 100000L, long b = -200000L.

What is difference between long and int in Java?

The basic difference between the type int and long is of their width where int is 32 bit, and long is 64 bits. … In Java, the range of type int is from –2,147,483,648 to 2,147,483,647 whereas, the range of type long is from –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 which is very much greater than type int.


How long is represented in java?


Type Size Range
short 16 bits -32,768 to 32,767
char 16 bits 0 to 65,535
int 32 bits -2,147,483,648 to 2,147,483,647
long 64 bits -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807

Which is bigger double or long java?

Another way of saying this is that long has just under 19 digits precision, while double has only 16 digits precision. Double can store numbers larger than 16 digits, but at the cost of truncation/rounding in the low-order digits.

What is float example?

The definition of a float is a small buoyant object, or a small object attached to a fishing line to show you when a fish bites. A raft that stays on the surface of the pool is an example of a float. A little round object attached to your fishing pole that shows you when a fish has bitten is an example of a float.

What is long in Java example?

The long (primitive type) and Long class:

The long is a numeric data type in Java. This is also the primitive type. The long type takes 64 bits of memory. The maximum value that a long type variable can store is 9,223,372,036,854,775,807L.

How do you read a long number in Java?

Example 1

  1. import java.util.*;
  2. public class ScannerNextLongExample1 {
  3. public static void main(String[] args) {
  4. Scanner input = new Scanner(;
  5. System.out.print(“Enter the Number you want: “);
  6. long num = input.nextLong();
  7. System.out.println(“Output value: “+(num * (num + 2)) / 2);
  8. input.close();

Why do we use long int?

Sometimes, the range of long is the same as int (32-bit systems; 64-bit Windows); then the main reason for using long or int is to match the interface to a particular API (because the types are still distinct, even if they support the same range).

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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 .

Can we use long int in Java?

The long contains minimum value of -263 and a maximum value of 263-1. Its default value is 0L. Its default size is 8 byte. It is used when you need a higher range integer value.

Is number a data type in Java?

The most primitive data type in any computer language is number. … The standard Java integer data types are: byte 1 byte -128 to 127. short 2 bytes -32,768 to 32,767.

What is a Java data type?

Data types in Java are classified into two types: Primitive—which include Integer, Character, Boolean, and Floating Point. Non-primitive—which include Classes, Interfaces, and Arrays.

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