Sorting a collection

Question

hello all,
i am tring to sort a two dim array of object , how can i print the dim array of object after sort?
package collection;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.ListIterator;
public class CollectionSort {
           public static void main(String args[])
                Object[][] data =
                         {"Color", "Red", "Red"},
                         {"Shape", "Square","Red"},
                         {"Fruit", "Banana", "Red"},
                         {"Plain", "Text", "Red"},
                         {"Plain", "Text", "Red"}
                List list = Arrays.asList(data);
                final Comparator stringCmp = new Comparator() {
                 String s1;
                    public int compare(Object o1, Object o2) {
                         s1 = o1.toString().toUpperCase();
                         String s2 = o2.toString().toUpperCase();
                         return s1.compareTo(s2);
                    public String toString(){
                         return s1;
                Collections.sort(list,  stringCmp);
                for (ListIterator<Object> it = list.listIterator();
                    it.hasNext();) {
                         String t = it.next().toString();
                         System.out.println(t);
}

Answer 1

You mustn't create something already created:
Collections.sort(list,  String.CASE_INSENSITIVE_ORDER);See: http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#CASE_INSENSITIVE_ORDER
Respect toString(), I have created a recursive toString for any object, included arrays or matrix:
public static String toString(Object object){
     String string;
     if(object.getClass().isArray()){
          StringBuilder arrayString=new StringBuilder("[");
          int length=Array.getLength(object);
          for(int i=0;i<length;i++)     {
               arrayString.append(toString(Array.get(object,i)));
               arrayString.append(", ");
          arrayString.setCharAt(arrayString.length()-2,']');
          string=arrayString.substring(0,arrayString.length()-1);
     else
          string=String.valueOf(object);
     return string;
}