001package basics.mixedclass; 002public class Main { 003 private Main() {} 004 static public void main (final String[] args) { 005 //stdlib.Trace.graphvizShowSteps (true); stdlib.Trace.run (); 006 try { 007 if (args.length != 1) 008 throw new NumberFormatException(); 009 int vx = Integer.parseInt(args[0]); 010 Integer rx = new Integer(vx); 011 System.out.println(" Number: " + rx.toString()); 012 System.out.println("Hashcode: " + rx.hashCode()); 013 014 } catch (NumberFormatException e) { 015 System.out.println("Error: Bad input"); 016 } 017 } 018}