13. Write a program(preferably UI) to demonstrate the operations(at least 4) on array list/ hash list/set/sorted set.

 
 

    /*  
    
    13. Write a program(preferably UI) to demonstrate the operations(at least 4) on array list/ hash
list/set/sorted set.

    */
import java.util.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 import javax.swing.*;
import java.awt.*;

class Program13 extends JFrame {

     static JFrame frame;
     static JLabel  l1;
     static   JButton removebutton,addbutton,sortbutton,revbutton ;
     static   JTextArea area;
     static JTextField t1;

    static ArrayList< String > list;

	public static void main(String[] args)
	{
		 list = new ArrayList< String>();

		 
		list.add("India");
		list.add("Pakistan");
		list.add("Srilanka");
		 

		// Printing the unsorted ArrayList
		System.out.println("Before Sorting : " + list);

		// Sorting ArrayList in ascending Order
		Collections.sort(list);

		// printing the sorted ArrayList
		System.out.println("After Sorting : " + list);


        frame = new JFrame();
        removebutton = new JButton("remove");
        addbutton = new JButton("add");
        sortbutton = new JButton("sort");
         revbutton = new JButton("reverse");

        area = new JTextArea("Welcome to javatpoint");    
          removebutton.setBounds(80, 260, 100, 40);
          addbutton.setBounds(180, 260, 100, 40);
         sortbutton.setBounds(280, 260, 100, 40);
         revbutton.setBounds(380, 260, 100, 40);



    l1 = new JLabel("country name");
			l1.setBounds(50, 50, 250, 30);

        t1 = new JTextField();
		t1.setBounds(250, 50, 250, 30);


      area = new JTextArea();
		area.setBounds(250, 100, 250, 90);

      frame.   add(l1);
      frame.    add(t1);
      frame.    add(removebutton);
       frame.   add(addbutton);
       frame.   add(sortbutton);
       frame.   add(revbutton);

       frame.   add(area);

   area.setText(list.toString());


removebutton.addActionListener( new ActionListener() {
				        public void actionPerformed(ActionEvent e)
				        {
					         
					         String name=t1.getText().toString();
					       list.remove(name);
					       
				        }
			        });

addbutton.addActionListener( new ActionListener() {
				        public void actionPerformed(ActionEvent e)
				        {
					          
					        String name=t1.getText().toString();
					        list.add(name);
					        area.setText(list.toString());
				        }
			        });

sortbutton.addActionListener( new ActionListener() {
				        public void actionPerformed(ActionEvent e)
				        {
					         
					         Collections.sort(list);
					      area.setText(list.toString());
					       
				        }
			        });

revbutton.addActionListener( new ActionListener() {
				        public void actionPerformed(ActionEvent e)
				        {
					         Collections.sort(list, Collections.reverseOrder());
					         area.setText(list.toString());
					      
					       
				        }
			        });

        frame.setSize(400, 400);    
        frame.setLayout(null);    
        frame.setVisible(true); 


	}
 

 
}