How many bytes does long take in Java?

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 range of long in Java?

The possible values of a long are between -9,223,372,036,854,775,808 (-263) to 9,223,372,036,854,775,807 (263 – 1).

Is int always 4 bytes?

Nowadays in most of compilers int is of 4 bytes. If you want to check what your compiler is using you can use sizeof(int) .

Why integer is 4 bytes in Java?

An unsigned int is also 16-bits, but from 0-65535 since it’s unsigned. The fact that an int uses a fixed number of bytes (such as 4) is a compiler/CPU efficiency and limitation, designed to make common integer operations fast and efficient.

Can we convert int to byte in Java?

Java Integer byteValue() method

lang package converts the given Integer into a byte after a narrowing primitive conversion and returns it. Syntax : public byte byteValue() Return : This method returns the numeric value represented by this object after conversion to byte type.

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Why do bytes have 8 bits?

A byte is 8 bits because that’s the definition of a byte. An ASCII character is stored in a byte because trying to use just 7 bits instead of 8 means you cannot address one character directly and would have to pack and unpack bit strings any time you wanted to manipulate text – inefficient, and RAM is cheap.

Why is an int 4 bytes?

So the reason why you are seeing an int as 4 bytes (32 bits), is because the code is compiled to be executed efficiently by a 32-bit CPU. If the same code were compiled for a 16-bit CPU the int may be 16 bits, and on a 64-bit CPU it may be 64 bits.

Can final method be overloaded?

private and final methods can be overloaded but they cannot be overridden. It means a class can have more than one private/final methods of same name but a child class cannot override the private/final methods of their base class.

What are the 8 data types in Java?

Primitive types are the most basic data types available within the Java language. There are 8: boolean , byte , char , short , int , long , float and double . These types serve as the building blocks of data manipulation in Java.

What is the range of float in Java?


Type Size Range
short 16 bits -32,768 .. 32,767
int 32 bits -2,147,483,648 .. 2,147,483,647
long 64 bits -9,223,372,036,854,775,808 .. 9,223,372,036,854,775,807
float 32 bits 3.40282347 x 1038, 1.40239846 x 1045

How many bytes is 4 numbers?


Integers are commonly stored using a word of memory, which is 4 bytes or 32 bits, so integers from 0 up to 4,294,967,295 (232 – 1) can be stored. Below are the integers 1 to 5 stored as four-byte values (each row represents one integer).

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What is the range of int?

The INTEGER data type stores whole numbers that range from -2,147,483,647 to 2,147,483,647 for 9 or 10 digits of precision. The number 2,147,483,648 is a reserved value and cannot be used.

How many bytes does int a use?

In this article

Type Name Bytes Range of Values
int 4 -2,147,483,648 to 2,147,483,647
unsigned int 4 0 to 4,294,967,295
__int8 1 -128 to 127
unsigned __int8 1 0 to 255
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