Convert2.java

class Convert2 {
public static void main(String args[]) {
  if ( args.length < 2 ) {
		throw new IllegalArgumentException("parameter : number_string radix");
	}
	String s = args[0];
	int radix = Integer.parseInt(args[1]);
	int decimal = Integer.parseInt(s,radix);
	System.out.println("result = "+decimal);
}
}