Exercise no. 23

package lord1;

import javax.swing.JOptionPane;

public class arraydelete {
     
    public static void main(String[]args)
    {
        String[][] arr = new String[5][2];
        String choice=" ";
        String container="";
        String element="";
String sumpay="";
     
        do{
        choice=JOptionPane.showInputDialog(null,"V--->View element  \nD--->Delete element  \nI--->Insert element \nE--->Exit");
        choice=choice.toUpperCase();
     
        //view element
        if(choice.equals("V")==true)
        {
            sumpay="";
            for(int column=0;column<5;column++)
            {
                for(int row=0;row<2;row++)
                {
                    sumpay+=  " "+ arr[column][row];
                 
                }
            }
            JOptionPane.showMessageDialog(null, "Array element " + sumpay);
         
         
        }
        //delete element
        if(choice.equals("D")==true)
        {
           
            int empty=0;
            int notempty=0;
             element=JOptionPane.showInputDialog(null,"Enter element");
             for(int column=0;column<5;column++)
                {
                    for(int row=0;row<2;row++)
                    {
                        if(arr[column][row]!=null)
                        {
                     
                            if(arr[column][row].equals(element)==true)
                             {
                               arr[column][row]=null;
                               notempty=1;
                            
                             }
                        }
                     
                        else
                        {
                            empty=1;
                        }
                }
            }
          
          
             if(empty==0 && notempty==1)
             {
                 JOptionPane.showMessageDialog(null, "value is deleted");
                 notempty=0;
             }
             if(empty==1 && notempty==0)
             {
                 JOptionPane.showMessageDialog(null, "Element is not on the list to delete");
               
               
                 empty=0;
               
             }
     
        }
     
//insert element
if(choice.equals("I")==true)
        {
              for(int column=0;column<5;column++)
                {
                   for(int row=0;row<2;row++)
                     {
                      container=JOptionPane.showInputDialog(null,"Maximum value is 10" + "\nColumn [" + column + "]" + "Row [" + row + "]" +" Insert element");
                   
                      if(arr[column][row]!=null)
                      {
                   
                                if(arr[column][row].equals(container)==true)
                                     {
                                        JOptionPane.showMessageDialog(null, "Already exists");
                                     }
                               else
                                    {
                                   JOptionPane.showMessageDialog(null, "occupied");
                                  
                                     }
                      }
                      else
                      {
                          arr[column][row]=container;
                      }
                   
                 
                }//first for
            }//first for
        }
        }
        while(choice.equals("E")==false);
     
        JOptionPane.showMessageDialog(null, "System terminated");
    }
}