What does long in Java mean?

What is the use of long in Java?

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.

How do you represent a long in Java?

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. long l = 2147483648L;// works fine.

What is the limit of long in 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

Can Java long be negative?

The reason why Java doesn’t throw an exception and you receive negative numbers has to do with the way numbers are stored. For a long primitive the first byte is used for indicating the sign of the number (0 -> positive, 1 -> negative), while the rest are used for the numeric value. This means that Long.

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What is long in Java example?

The long (primitive type) and Long class:

The long is a numeric data type in Java. … 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. The minimum value is -9,223,372,036,854,775,808L.

What is a Java data type?

There are 8 primitive data types in Java: byte, char, short, int, long, float, double and boolean. These data types act as the basic building blocks of data manipulation in Java. Primitive data types have a constraint that they can hold data of the same type and have a fixed size.

What is the biggest data type in Java?

The largest integer number that a long type can represent is 9223372036854775807. If we deal with even larger numbers, we have to use the java.

Integers.

Type Size Range
byte 8 bits -128 to 127
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

What is the limit of long?

In this article

Type Name Bytes Range of Values
long 4 -2,147,483,648 to 2,147,483,647
unsigned long 4 0 to 4,294,967,295
long long 8 -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
unsigned long long 8 0 to 18,446,744,073,709,551,615

Which is bigger double or long Java?

3 Answers. If you are storing integers, use Long . Your statement that “Advantage of Using Double is that it gives a more wider range for storing Whole Numbers” is incorrect. Both are 64 bits long, but double has to use some bits for the exponent, leaving fewer bits to represent the magnitude.

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