Java Reflection class get canonical name

public class Main {  
  public static void main(String args[]) throws Exception {      
    Class<?> c = Class.forName("java.lang.String");  
    System.out.println("Cannonical name: "+c.getCanonicalName());
    //from w w  w. j av  a 2 s  .  com
    c = String.class;
    System.out.println("Cannonical name: "+c.getCanonicalName());
    
    c = int[].class;
    System.out.println("Cannonical name: "+c.getCanonicalName());
    
    c = int.class;
    System.out.println("Cannonical name: "+c.getCanonicalName());
    
    c = Class.class;
    System.out.println("Cannonical name: "+c.getCanonicalName());
  }  
}