Refactor Screenshot examples

core-java/src/main/java/com/baeldung/printscreen/Screenshot.java

@@ -7,20 +7,17 @@ import java.io.File;
 
 public class Screenshot {
 
-    private String filePath;
-    private String filenamePrefix;
-    private String fileType;
-    private int timeToWait;
+    private final String filePath;
+    private final String filenamePrefix;
+    private final String fileType;
 
-    public Screenshot(String filePath, String filenamePrefix,
-                      String fileType, int timeToWait) {
+    public Screenshot(String filePath, String filenamePrefix, String fileType) {
         this.filePath = filePath;
         this.filenamePrefix = filenamePrefix;
         this.fileType = fileType;
-        this.timeToWait = timeToWait;
     }
 
-    public void getScreenshot() throws Exception {
+    public void getScreenshot(int timeToWait) throws Exception {
         Thread.sleep(timeToWait);
         Rectangle rectangle = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
         Robot robot = new Robot();

core-java/src/test/java/com/baeldung/printscreen/ScreenshotTest.java

@@ -1,34 +1,21 @@
 package com.baeldung.printscreen;
 
 import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 import java.io.File;
 
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertTrue;
 
 
 public class ScreenshotTest {
 
-    private Screenshot screenshot;
-    private String filePath;
-    private String fileName;
-    private String fileType;
-    private File file;
-
-    @Before
-    public void setUp() throws Exception {
-        filePath = "";
-        fileName = "Screenshot";
-        fileType = "jpg";
-        file = new File(filePath + fileName + "." + fileType);
-        screenshot = new Screenshot(filePath, fileName, fileType, 2000);
-    }
+    private Screenshot screenshot = new Screenshot("", "Screenshot", "jpg");
+    private File file = new File("Screenshot.jpg");
 
     @Test
     public void testGetScreenshot() throws Exception {
-        screenshot.getScreenshot();
+        screenshot.getScreenshot(2000);
         assertTrue(file.exists());
     }
 

spring-all/src/test/java/org/baeldung/ehcache/SquareCalculatorTest.java

@@ -1,20 +1,20 @@
 package org.baeldung.ehcache;
 
-import static org.junit.Assert.*;
-
 import org.baeldung.ehcache.calculator.SquaredCalculator;
 import org.baeldung.ehcache.config.CacheHelper;
 import org.junit.Before;
 import org.junit.Test;
 
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 public class SquareCalculatorTest {
-    SquaredCalculator squaredCalculator = new SquaredCalculator();
-    CacheHelper cacheHelper = new CacheHelper();
+    private SquaredCalculator squaredCalculator = new SquaredCalculator();
+    private CacheHelper cacheHelper = new CacheHelper();
 
     @Before
     public void setup() {
         squaredCalculator.setCache(cacheHelper);
-
     }
 
     @Test
@@ -22,7 +22,7 @@ public class SquareCalculatorTest {
         for (int i = 10; i < 15; i++) {
             assertFalse(cacheHelper.getSquareNumberCache().containsKey(i));
             System.out.println("Square value of " + i + " is: "
-                    + squaredCalculator.getSquareValueOfNumber(i) + "\n");
+              + squaredCalculator.getSquareValueOfNumber(i) + "\n");
         }
     }
 
@@ -31,13 +31,13 @@ public class SquareCalculatorTest {
         for (int i = 10; i < 15; i++) {
             assertFalse(cacheHelper.getSquareNumberCache().containsKey(i));
             System.out.println("Square value of " + i + " is: "
-                    + squaredCalculator.getSquareValueOfNumber(i) + "\n");
+              + squaredCalculator.getSquareValueOfNumber(i) + "\n");
         }
-        
+
         for (int i = 10; i < 15; i++) {
             assertTrue(cacheHelper.getSquareNumberCache().containsKey(i));
             System.out.println("Square value of " + i + " is: "
-                    + squaredCalculator.getSquareValueOfNumber(i) + "\n");
+              + squaredCalculator.getSquareValueOfNumber(i) + "\n");
         }
     }
 }