Converting Strings to Numbers and Vice Versa in Java

Java lang package provides Integer class which has methods to convert an integer to String and vice versa. You can convert a String to an integer using the parseInt() method and Integer to String using the toString() method.

Example

Live Demo

public class Sample {
   public static void main(String args[]){
      String str = "1212";
      int num = Integer.parseInt(str);
      System.out.println(num);
      String st = Integer.toString(num);
      System.out.println();
   }
}

Output

1212