How to convert Int to Long in Java.

The primitive data type in Java is represented by the int keyword. It’s where variables are declared. It can also be used with methods that return values of the integer type. A 32-bit signed two’s complement integer can be stored in it.

The concept of an integer is familiar to most of us from our elementary school days. An integer is a number that doesn’t have a fractional component. In other words, an integer is comparable to a whole number, except it also has negative values. Thus, non-decimal numbers may both be positive and negative. It refers to a memory location (or locations) that is used to store non-decimal or non-fractional positive or negative numbers. The keyword ‘int’ signifies an integer type, which describes the memory needed to store the data. Additionally, this type has limitations on how it can be used. For example, fractions cannot be stored in integers. Now let us know a bit about Long data type as We are going to learn How to convert Int to Long in Java.

A 64-bit two’s complement integer is the long data type. The signed long has a value of – (2^63) at its lowest point and (2^63)-1 at its highest point. You can express an unsigned 64-bit long with a minimum value of 0 and a maximum value of (2^64)-1 with the long data type in Java SE 8 and later. When you need a larger range of values than an int can supply, use this data type. To allow arithmetic operations for unsigned longs, the Long class has methods like compareUnsigned(), divideUnsigned(), and so on.

 

What’s The Approach

 

We can do this program in 3 ways:-

• Import the “java.util” package.

 

• Create a Scanner class.

 

• Accept the input from the user .

 

• Convert the int to long using the implicit typecasting as a lower type can be converted to a higher type implicitly.

 

• We can also convert int to long by using the long class . 

 

• The Int can be converted to long even by using the Long.valueOf() method.

 

• Print the long value.

 

Also Read: – How to convert Date to String in Java

 

Java Program to Convert Int to Long

1.Method

/*
 * TechDecode Tutorials
 * 
 * How to Covert Int to Long
 * 
 */

import java.util.*;
class Int_to_Long
{
    public static void main(String args[])
    {
        //Creating Scanner Class
        Scanner sc=new Scanner(System.in);
        //Accpeting users input
        System.out.print("Enter the Int value: ");
        int num=sc.nextInt();
        //Converting to long
        long l = num;
        System.out.println("Int Converted to Long is : "+l);
        
    }
}

 

2.Method

/*
 * TechDecode Tutorials
 * 
 * How to Covert Int to Long
 * 
 */

import java.util.*;
class Int_to_Long
{
    public static void main(String args[])
    {
        //Creating Scanner Class
        Scanner sc=new Scanner(System.in);
        //Accpeting users input
        System.out.print("Enter the Int value: ");
        int num=sc.nextInt();
        //Converting to long
        long l = new Long(num);
        System.out.println("Int Converted to Long is : "+l);
        
    }
}

 

3.Method

/*
 * TechDecode Tutorials
 * 
 * How to Covert Int to Long
 * 
 */

import java.util.*;
class Int_to_Long
{
    public static void main(String args[])
    {
        //Creating Scanner Class
        Scanner sc=new Scanner(System.in);
        //Accpeting users input
        System.out.print("Enter the Int value: ");
        int num=sc.nextInt();
        //Converting to long
        long l = Long.valueOf(num);
        System.out.println("Int Converted to Long is : "+l);
        
    }
}

 

Output:-