Question about what this do.

[Syfer]

for(int i = 0; i<inputting; i++){
           System.out.print("Enter Number "+(i+1) + ": ");
            num[i]= kbd.next();
            System.out.print("Enter Original Base: "+(i+1) + ": ");
            x[i] = Integer.parseInt(kbd.next());
            int l = num[i].length();
            int v = 0;
            for(int j = l-1; j>=0; j--){
                if(Character.isLetter(num[i].charAt(v))){
                     a = calculate(num[i].charAt(v));
                }
                  else
                    a = Integer.parseInt(Character.toString(num[i].charAt(v)));
                z = z + (a*(int)Math.pow(x[i], j));
                v++;
                
                //  Returns the value of the first argument raised to the power of the second argument.
            }

can somebody explain me the use of this statement?

especially the if else statement w/ math.pow.

[JosAH]

for(int i = 0; i<inputting; i++){
           System.out.print("Enter Number "+(i+1) + ": ");
            num[i]= kbd.next();
            System.out.print("Enter Original Base: "+(i+1) + ": ");
            x[i] = Integer.parseInt(kbd.next());
            int l = num[i].length();
            int v = 0;
            for(int j = l-1; j>=0; j--){
                if(Character.isLetter(num[i].charAt(v))){
                     a = calculate(num[i].charAt(v));
                }
                  else
                    a = Integer.parseInt(Character.toString(num[i].charAt(v)));
                z = z + (a*(int)Math.pow(x[i], j));
                v++;
                
                //  Returns the value of the first argument raised to the power of the second argument.
            }

can somebody explain me the use of this statement?

especially the if else statement w/ math.pow.

You didn't write this piece of code yourself did you? No? Good, because it's a lousy way to convert a String representation of a number in any base to an integral number; w.r.t. that pow( ... ) method: the author commented the method in the last line of the 'else-part' and because it's a method from the Math class it is completetly documented in the API documentation. My tip: throw that piece of code away and read the API documentation for the Integer class; it does exactly what you want and it does it without using that the pow( ... ) method.

kind regards,

Jos