Java Program to Convert String to long

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In the previous article we have discussed Java Program to Convert String to int

In this article we will see how to convert string  to long.

Program To Convert String to long

Before going into the program, let’s see some examples of both  String and long type.

Example-1: String types

String a = "b";
String b = "5643646442";
Examples-2: Long types

long a = 56666L;
long b = 5643646442;

Let’s see different ways to convert String to long.

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Method 1 : Java Program to Convert String to long Using parseLong() method

String type variable can be converted to long by using  parseLong() method, let’s see how it actually works.

Here this method is a wrapper class in Java. This method of the Long class converts the String variables into long.

Approach :

  1. Take a string value and store it in a string variable input1.
  2. Then pass that input1 variable as parameter to parseLong() method which will convert the String into long value and return it .
  3. Store that long value  in a  variable output .
  4. Display the result .

Program:

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    
    {
    // creating scanner object
    Scanner sc = new Scanner(System.in);
    // input a string value through scanner class
    System.out.print("Enter a string : ");
    String input1=sc.next();
    // converting to long
    long output =Long.parseLong(input1) ;
    System.out.println("Converted long value is : " + output);
    }
}
Output : 

Enter a string : 96666666
Converted long value is : 96666666

Method 2 : Java Program to Convert String to long Using valueOf() method

String type variable can be converted to long by using  valueOf() method, let’s see how it actually works.

This method returns an object of the Long class. However, the object will be  automatically converted into the primitive type.

 Approach :

  1. Take a string value and store it in a string variable input1.
  2. Then pass that input1 variable as parameter to Long.valueOf() method which will convert the String into long value and return it .
  3. Store that long value  in a  variable output .
  4. Display the result .

Program:

import java.util.Scanner;

public class Main

{
    public static void main(String[] args)
    {
        // creating scanner object
        Scanner sc = new Scanner(System.in);
        // input a  character through scanner class
        System.out.print("Enter a string : ");
        String input1=sc.next();
        // converting to Long
        long output =Long.valueOf(input1) ;
        System.out.println("Converted Long value is : " + output);
    }
}
Output : 

Enter a string : 96666666
Converted long value is : 96666666

Want to excel in java coding? Practice with these Java Programs examples with output and write any
kind of easy or difficult programs in the java language

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