Tuesday 7 February 2023

What is the maximum value of an int in java?

Java is a popular programming language, and one of its components is the int data type. An int is an integer, which means it can store whole numbers such as 10, -7, and 0.

When working with this data type, it's important to know its limitations. The maximum value of an int in Java depends on the type of computer you're running the application on. Generally, int has a maximum value of 2,147,483,647 (231-1). This means that if your application tries to do something with a number larger than 2,147,483,647 it will result in an error.

However there are cases where you will need larger values than this. In these cases you can use the data type long instead of int. A long can store numbers greater than 2147483647 up to 9223372036854775807 (263-1). To declare a value as long instead of int in Java you need to add an 'L' at the end to show that it is long instead of integer.

For example:

long l = 9223372036854775807L; //this stores the maximum value for a long datatype

int i = 9223372036854775807; //this would result in an error because it's too large for an int datatype

You should also know that both int and long are signed data types which means they can represent positive and negative numbers within certain ranges. For unsigned integers there exists other types called unsigned int and unsigned long which can only represent positive integers. The range for these data types is from 0 up to 4 294 967 295 (232) and 18 446 744 073 709 551 615 (264)), respectively.

See more about length of int java

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