Java Convert Octal to Decimal

public class OctalToDecimalExample1{  
public static void main(String args[]){  
//Declaring an octal number  
String octalString="121";  
//Converting octal number into decimal  
int decimal=Integer.parseInt(octalString,8);  
//Printing converted decimal number  
System.out.println(decimal);  
}}  

Output:
81