import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;
   import java.util.Scanner;
 
    public class ExpressionCalculatorPanel extends JPanel
   {
   // Variables to be used
      private JLabel inputLabel, resultLabel;
      private JTextField ExpressionCalculator;
      private JButton computeButton;
 
   //-----------------------------------------------------------------
   //  Constructor: Sets up the main GUI components.
   //-----------------------------------------------------------------
       public ExpressionCalculatorPanel()
      {
         inputLabel = new JLabel ("Enter a value of x");
         resultLabel = new JLabel ("Final result = ---");
 
         ExpressionCalculator = new JTextField (5);
         ExpressionCalculator.addActionListener(new ButtonListener());
 
 
      	// Set buttons and listeners
         computeButton = new JButton("Compute Final Result");
         computeButton.addActionListener(new ButtonListener());
 
 
      	// Add to panels
         add (computeButton);
         add (inputLabel);
         add (resultLabel);
 
 
         setPreferredSize (new Dimension(300, 75));
         setBackground (Color.white);
      }
 
   //*****************************************************************
   //  Represents an action listener for the temperature input field.
   //*****************************************************************
       private class ButtonListener implements ActionListener
      {
      //--------------------------------------------------------------
      //  Performs the conversion when the enter key is pressed in
      //  the text field.
      //--------------------------------------------------------------
          public void actionPerformed (ActionEvent event)
         {
 
			int x, String, Result, Stringresult;
 
		//Math.sqrt (Math.pow(x,5)-(2)*Math.pow(x,3)-
          // Math.abs(5)*Math.pow(x,2)+(4)*(x));
         String stringResult = Double.toString(result);
        ExpressionCalculator.setText("Final result:"+ Result);
 
 
			}