New improvements

src/main/java/rvc/timecalc/AnalogClock.java

@@ -12,6 +12,7 @@ import java.awt.Graphics2D;
 import java.awt.RenderingHints;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
+import java.io.IOException;
 import java.util.Calendar;
 import java.util.GregorianCalendar;
 
@@ -32,6 +33,16 @@ public class AnalogClock extends JPanel {
             @Override
             public void mouseClicked(MouseEvent e) {
                 highlight = !highlight;
+                if(highlight && !Utils.highlightTxt.exists()) {
+                    try {
+                        Utils.highlightTxt.createNewFile();
+                    } catch (IOException ioException) {
+                        System.out.println(e);
+                    }
+                }
+                if(!highlight && Utils.highlightTxt.exists()) {
+                    Utils.highlightTxt.delete();
+                }
             }
 
             @Override

src/main/java/rvc/timecalc/ProgressSquare.java

@@ -9,6 +9,7 @@ import java.awt.Graphics2D;
 import java.awt.RenderingHints;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseListener;
+import java.io.IOException;
 
 public class ProgressSquare extends JPanel {
 
@@ -22,6 +23,16 @@ public class ProgressSquare extends JPanel {
 
     public void setHighlight(boolean highlight) {
         this.highlight = highlight;
+        if(highlight && !Utils.highlightTxt.exists()) {
+            try {
+                Utils.highlightTxt.createNewFile();
+            } catch (IOException ioException) {
+                System.out.println(ioException);
+            }
+        }
+        if(!highlight && Utils.highlightTxt.exists()) {
+            Utils.highlightTxt.delete();
+        }
     }
 
     public ProgressSquare() {
@@ -32,6 +43,16 @@ public class ProgressSquare extends JPanel {
             @Override
             public void mouseClicked(MouseEvent e) {
                 highlight = !highlight;
+                if(highlight && !Utils.highlightTxt.exists()) {
+                    try {
+                        Utils.highlightTxt.createNewFile();
+                    } catch (IOException ioException) {
+                        System.out.println(e);
+                    }
+                }
+                if(!highlight && Utils.highlightTxt.exists()) {
+                    Utils.highlightTxt.delete();
+                }
             }
 
             @Override

src/main/java/rvc/timecalc/TimeCalcWindow.java

@@ -116,6 +116,11 @@ public class TimeCalcWindow {
                 .setBounds(10 + analogClock.getWidth() + 10, 10, 200, 200);
         window.add(progressSquare);
 
+
+        if(Utils.highlightTxt.exists()) {
+            analogClock.setHighlight(true);
+            progressSquare.setHighlight(true);
+        }
         StringBuilder sb = null;
         while (true) {
             if (stopBeforeEnd) {
@@ -226,6 +231,10 @@ public class TimeCalcWindow {
             } catch (InterruptedException e) {
 
             }
+
+            boolean exists = Utils.highlightTxt.exists();
+            analogClock.setHighlight(exists);
+            progressSquare.setHighlight(exists);
         }
         window.setVisible(false);
         window.dispose();

src/main/java/rvc/timecalc/Utils.java

@@ -20,7 +20,7 @@ public class Utils {
      * Count of bytes per one kilobyte.
      */
     private static final int COUNT_OF_BYTES_PER_ONE_KILOBYTE = 1024;
-
+    public static final File highlightTxt = new File("highlight.txt");
     /**
      * Writes text to a file.
      * @param file file