Array sort and search in a java pgm

Array sort and search

import java.util.Arrays;

 public class MainClass

{

   public static void main(String args[]) throws Exception

   {

      int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };

      Arrays.sort(array);

      printArray("Sorted array", array);

      int index = Arrays.binarySearch(array, 2);

      System.out.println("Found 2 @ " + index);

   }

   private static void printArray(String message, int array[])

   {

      System.out.println(message+ ": [length: " + array.length + "]");

      for (int i = 0; i < array.length; i++)

        {

         if(i != 0)

         {

            System.out.print(", ");

          }

              System.out.print(array[i]);                    

           }

              System.out.println();

          }

      }

Extending an Array in a java pgm

Extending an Array

public class Main

{

   public static void main(String[] args)

   {

      String[] names = new String[] { "A", "B", "C" };

      String[] extended = new String[5];

      extended[3] = "D";

      extended[4] = "E";

      System.arraycopy(names, 0, extended, 0, names.length);

      for (String str : extended)

      {

         System.out.println(str);

      }

   }

}

Array filling in a java pgm

Array filling

import java.util.*;

 public class FillTest 

{

   public static void main(String args[]) 

  {

      int array[] = new int[6];

      Arrays.fill(array, 100);

      for (int i=0, n=array.length; i < n; i++) 

      {

         System.out.println(array[i]);

      }

      System.out.println();

      Arrays.fill(array, 3, 6, 50);

      for (int i=0, n=array.length; i< n; i++) 

      {

         System.out.println(array[i]);

      }

   }

}