refactoring, fixed pipeline code style errors

src/main/java/cz/muni/fi/pv168/project/ui/ViewBar/StatisticsPanel.java

@@ -10,12 +10,12 @@ import java.util.Arrays;
 import java.util.List;
 
 public class StatisticsPanel extends JScrollPane {
-    private static final List<CategoryStatistic> statisticsSampleData = Arrays.asList(
+    private static final List<CategoryStatistic> STATISTICS_SAMPLE_DATA = Arrays.asList(
             new CategoryStatistic(new Category("Work", Color.RED), 236),
             new CategoryStatistic(new Category("Partner", Color.BLUE), 36),
             new CategoryStatistic(new Category("School", Color.GREEN), 23676));
 
     public StatisticsPanel() {
-        super(new StatisticsTable(statisticsSampleData));
+        super(new StatisticsTable(STATISTICS_SAMPLE_DATA));
     }
 }

src/main/java/cz/muni/fi/pv168/project/ui/main/MainWindow.java

@@ -71,7 +71,7 @@ public class MainWindow {
                 System.out.print(String.format("Error creating [%s] component", instance.toString()));
                 continue;
             }
-            tabbedPane.add((component));
+            tabbedPane.add(component);
             tabbedPane.setTabComponentAt(index, new JLabel(instance.toString(), SwingConstants.CENTER));
             index += 1;
         }
@@ -81,7 +81,8 @@ public class MainWindow {
             public void componentResized(ComponentEvent e) {
                 for (int i = 0; i < ViewBarInstances.values().length; i++) {
                     JLabel tab = (JLabel) tabbedPane.getTabComponentAt(i);
-                    Dimension newDimension = new Dimension(tabbedPane.getWidth() / ViewBarInstances.values().length - 30, tab.getFontMetrics(tab.getFont()).getHeight());
+                    Dimension newDimension = new Dimension(tabbedPane.getWidth() / ViewBarInstances.values().length - 30,
+                            tab.getFontMetrics(tab.getFont()).getHeight());
                     // setting only one doesn't work when maximizing
                     tab.setPreferredSize(newDimension);
                     tab.setSize(newDimension);

src/test/java/cz/muni/fi/pv168/project/testingData/TestingDataSet.java

-package cz.muni.fi.pv168.project.testingData;
-
-import cz.muni.fi.pv168.project.data.Category;
-import cz.muni.fi.pv168.project.ui.main.statistic.CategoryStatistic;
-
-import java.awt.Color;
-import java.util.Arrays;
-import java.util.List;
-
-public class TestingDataSet {
-
-    private static final List<CategoryStatistic> statisticsSampleData = Arrays.asList(
-            new CategoryStatistic(new Category("Work", Color.RED), 236),
-            new CategoryStatistic(new Category("Partner", Color.BLUE), 36),
-            new CategoryStatistic(new Category("School", Color.GREEN), 23676));
-}