Getting this error with the coordinates of the cursor using MouseClicked."The method getX() & getY() is undefined for the type MouseEvent"

Simple Addition subtraction application:

I checked for its solution and I found solutions regarding getX() but there were not related to MouseClicked!

I think its some type casting issue but I'm unable to resolve it and I verified all the imports and also even matched the code with the available online ones!

imports:

    import java.awt.FlowLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.MouseAdapter;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JMenuItem;
    import javax.swing.JPopupMenu;
    import javax.swing.JTextField;
    import com.sun.glass.events.MouseEvent;

Main Class:

    public class Calcx {
    	public static void main(String[] args) {
    		Initialize o=new Initialize();
    		
    	}
    }

called class:

    class Initialize extends JFrame implements ActionListener {
    		JFrame frame;
    		JTextField t1;
    		JButton b1,b2;
    		JTextField t2;
    		JLabel l,l1;
    		JPopupMenu p;
    		JMenuItem i,j;

Constructor:

    			public Initialize() {
    				setTitle("CalcX");
    				setLayout(new FlowLayout());
    				setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    				l=new JLabel("CalcX");
    				t1=new JTextField(5);
    				t2=new JTextField(5);
    				b1=new JButton("ADD");
    				b2=new JButton("SUBTRACT");
    				b2.addActionListener(this);
    				l1=new JLabel();
    				b1.addActionListener(this);
    				p=new JPopupMenu("Edit");
    				i= new JMenuItem("cut");
    				j= new JMenuItem("copy");
    				add(p);
    				p.add(i);
    				p.add(j);
                    add(l);
    				add(t1);
    				add(t2);
    				add(b1);
    				add(b2);
    				pack();
    				setVisible(true);


Error while using mouseClicked:

    				addMouseListener(new MouseAdapter()
    				{
    				public void mouseClicked(MouseEvent a)
    				{
    					 int x=a.getX();	*Error*
    					int y=a.getY();		*Error*
   					p.show(frame,x,y);
    				}
    				});	
    			}
    	
    }

import com.sun.glass.events.MouseEvent;

That is not the standard MouseEvent class used with the JDK.

You need to use:

import java.awt.event.MouseEvent;