Java convert Octal to Decimal.

public class JavaExample{  
   public static int octalToDecimal(int onum){    
 //initializing the decimal number as zero 
 int num = 0;    
 //This value will be used as the power  
 int p = 0;      
 while(true){    
    if(onum == 0){    
  break;    
    } else {    
  int temp = onum%10;    
  num += temp*Math.pow(8, p);    
  onum = onum/10;    
  p++;    
    }    
 }    
 return num;    
   }    
   public static void main(String args[]){        
 System.out.println("Decimal equivalent of octal value 143: "+octalToDecimal(143));       
   }
}