dependencies: #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve chec… (#2464)

* #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve checkstyle issues

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* add refactored file with correct filename to resolve checkstyle issue

* add the test data

* change filenames from JFrame to Jframe for checkstyle

* fix code smell from  sonar report

* add new testcases to improve the test coverage

* remove code smell

model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/App.java

@@ -31,7 +31,7 @@ package com.iluwatar.model.view.presenter;
  * (Presenter).
  *
  * <p>In the following example, The {@link FileLoader} class represents the app's logic, the {@link
- * FileSelectorJFrame} is the GUI and the {@link FileSelectorPresenter} is responsible to respond to
+ * FileSelectorJframe} is the GUI and the {@link FileSelectorPresenter} is responsible to respond to
  * users' actions.
  *
  * <p>Finally, please notice the wiring between the Presenter and the View and between the
@@ -46,7 +46,7 @@ public class App {
    */
   public static void main(String[] args) {
     var loader = new FileLoader();
-    var frame = new FileSelectorJFrame();
+    var frame = new FileSelectorJframe();
     var presenter = new FileSelectorPresenter(frame);
     presenter.setLoader(loader);
     presenter.start();

model-view-presenter/src/main/java/com/iluwatar/model/view/presenter/FileSelectorJframe.java

@@ -30,7 +30,6 @@ import static javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED;
 import java.awt.Color;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-
 import javax.swing.JButton;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
@@ -43,7 +42,7 @@ import javax.swing.JTextField;
 /**
  * This class is the GUI implementation of the View component in the Model-View-Presenter pattern.
  */
-public class FileSelectorJFrame extends JFrame implements FileSelectorView, ActionListener {
+public class FileSelectorJframe extends JFrame implements FileSelectorView, ActionListener {
 
   /**
    * Default serial version ID.
@@ -83,7 +82,7 @@ public class FileSelectorJFrame extends JFrame implements FileSelectorView, Acti
   /**
    * Constructor.
    */
-  public FileSelectorJFrame() {
+  public FileSelectorJframe() {
     super("File Loader");
     this.setDefaultCloseOperation(EXIT_ON_CLOSE);
     this.setLayout(null);