Hi, Please I need your help.
I am asking for advice and help on:
(I already try many times but always one of the arrays became empty)

How I can add a merge array from 2 others arrays and print it.
This is the code I have written:
Code:
//////////////////////////////////////////////////////
public class OrderedApp
   {
   public static void main(String[] args)
      {
      int maxSize = 25;             // array size
      OrdArray arr;                  // reference to array
      arr = new OrdArray(maxSize);   // create the array

      int maxSize1 = 25;                  // arr1ay size
      OrdArray arr1;                    // reference to arr1ay
      arr1 = new OrdArray(maxSize1);    // create the arr1ay
 
      arr.insert(77);     // inserts in array 1          
      arr.insert(13);
      arr.insert(13);
      arr.insert(33);
    		  
      arr1.insertb(47);   // inserts in array 2           
      arr1.insertb(89);
      arr1.insertb(69);
      arr1.insertb(32);
      arr1.insertb(99);

      System.out.print("array 1 \n");
      arr.display();                 // display items again
      System.out.print("===================================================\n");

      System.out.print("array 2 \n");      
      arr1.display();                 // display items 
      System.out.print("===================================================\n");

 

      }
   }
////////////////////////////////////////////////////////////////////

// inside this class add a third array which merge arr and arr1
// and print it
//

class OrdArray
   {
   private static long[] a;          // ref to array a
   private static int nElemsa;       // number of data items

   private long[] b;                // ref to array b
   private int nElemsb;             // number of data items

   //-----------------------------------------------------------
   public OrdArray(int max)          // constructor
      {
      a = new long[max];             // create array
      nElemsa = 0;

      b = new long[max];             // create array
      nElemsb = 0;
      }

   //-----------------------------------------------------------
   public int size()
      { return nElemsa; }

   //-----------------------------------------------------------
   public void insert(long value)     // put element into array
      {
      int j;
      for(j=0; j<nElemsa; j++)        // find where it goes
         if(a[j] > value)             // (linear search)
            break;
      for(int k=nElemsa; k>j; k--)    // move bigger ones up
         a[k] = a[k-1];
      a[j] = value;                   // insert it
      nElemsa++;                      // increment size
      }  // end insert()
   //-----------------------------------------------------------

   public void insertb(long value)     // put element into array
      {
      int j;
      for(j=0; j<nElemsb; j++)         // find where it goes
         if(b[j] > value)              // (linear search)
            break;
      for(int k=nElemsb; k>j; k--)     // move bigger ones up
         b[k] = b[k-1];
      b[j] = value;                    // insert it
      nElemsb++;                       // increment size
      }  // end insert()

   //-----------------------------------------------------------
   public static void display()             // displays array contents
      {
	
      for(int j=0; j<nElemsa; j++)    	   // for each element,
      {
         System.out.print(a[j] + " ");     // display it

      }
         System.out.println(""); 

      }
   //-----------------------------------------------------------
    
// here I added a merge method, then called from main to read array a and array b
// but when array a has info the array b is empty, and viceveresa

////////////////////////////////////////////////////////////////

}