Convert Java String to Long

We often have to extract some text that is a number. To perform some operations on that number, we must first convert it to the appropriate type. In this post, you will learn how to convert Java String to long.

We can use the parseLong() method to parse Java String to long.

Syntax

public static long parseLong(String s)

This method throws NumberFormatException if the String does not contain a parsable long.

Example

class Test {

  public static void main(String[] args) {
    long l1 = Long.parseLong("18273312");
    long l2 = Long.parseLong("122911311131");
    long l3 = Long.parseLong("122213");

    System.out.println(l1);
    System.out.println(l2);
    System.out.println(l3);
  }
}

Happy coding!