C Secure https://Ims.cisjubail.gov.sa/bbcswebdav/pid-149404-dt-content-rid-315398 1/courses/CS202.1 102 381/381.cs202 Assignment1.pdf Exercise: SwingCalculator Swing Calculator JTextField (at BorderLayout.NORTH) Panel in GridLayout(4,4) (at BorderLayout.CENTER) Content-Pane in BorderLayout Implement a simple calculator (called SwingCalculator) as shown. Hints: Set the ContentPane to BorderLayout. Add a JTextField (tfDisplay) to the NORTH. Adod a JPanel (panelButtons) to the CENTER Set the JPanel toGridLayout of 4x4, and add the 16 buttons. All the number buttons can share the same listener as they can be processed with the same codes. Use event.getActionCommand to get the label of the button that fires the event. The operator buttons "+",,"*", " "%and can share a common listener Use an anonymous inne class for "C button. You need to keep track of the previous operator. For example in "12", the current operator is "-", while the previous operator is-". Perform the operation specified by the previous operator. import javax.swing.* // Using Swing components import java.awt.* import java.awt.event.*; // Swing application extends from iavax.swing.JFrame public class SwingCalculator extends JFrame t ^41) ENG 11/24/2017 12:45 AM