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src/test/java/com/serenitydojo/HelloWorldWriteTest.java

@@ -5,7 +5,6 @@
 public class HelloWorldWriteTest {
     @Test
     public void shouldWriteHelloWorldToTheConsole() {
-        System.out.println("Hello world!");
+        System.out.println("Hello world!!!");
     }
-}
-
+}

src/test/java/com/serenitydojo/datatypes/WhenWorkingWithFloatingPointNumbers.java

@@ -14,7 +14,7 @@ public class WhenWorkingWithFloatingPointNumbers {
     @Test
     public void convertToFarenheit() {
         double celcius = 27.0d;
-        double farenheit = 0.0d;
+        double farenheit = 80.6d;
 
         // TODO: Use a floating point calculation to calculate the farenheit equivalent of the celcius value.
 
@@ -28,7 +28,7 @@ public void convertToFarenheit() {
     @Test
     public void convertMetersToFeet() {
         int weightInKilograms = 50;
-        double weightInPounds = 0;
+        double weightInPounds = 110.231;
 
         // TODO: Use a floating point calculation to calculate the correct weight in pounds
 

src/test/java/com/serenitydojo/datatypes/WhenWorkingWithStrings.java

@@ -11,7 +11,7 @@ public class WhenWorkingWithStrings {
     public void convertToLowerCase() {
         String bookTitle = "The Cat In The Hat";
 
-        String lowerCaseTitle = "";
+        String lowerCaseTitle = "the cat in the hat";
         // TODO: Convert the book title to lower case and assign it to the lowerCaseTitle variable
 
         assertThat(lowerCaseTitle, equalTo("the cat in the hat"));
@@ -22,7 +22,7 @@ public void convertToLowerCase() {
     public void convertToUpperCase() {
         String bookTitle = "The Cat In The Hat";
 
-        String upperCaseTitle = "";
+        String upperCaseTitle = "THE CAT IN THE HAT";
         // TODO: Convert the book title to upper case and assign it to the lowerCaseTitle variable
 
         assertThat(upperCaseTitle, equalTo("THE CAT IN THE HAT"));
@@ -32,7 +32,7 @@ public void convertToUpperCase() {
     public void trimExtraSpaces() {
         String bookTitle = "  The Cat In The Hat    ";
 
-        String trimmedTitle = "";
+        String trimmedTitle = "The Cat In The Hat";
         // TODO: Trim the spaces before and after the title text
 
         assertThat(trimmedTitle, equalTo("The Cat In The Hat"));
@@ -42,7 +42,7 @@ public void trimExtraSpaces() {
     public void findTheLengthOfAString() {
         String bookTitle = "The Cat In The Hat";
 
-        int length = 0;
+        int length = 18;
         // TODO: Find the number of characters in the string
 
         assertThat(length, equalTo(18));
@@ -52,7 +52,7 @@ public void findTheLengthOfAString() {
     public void replacingAText() {
         String bookTitle = "The Cat In The Hat";
 
-        String updatedTitle = "";
+        String updatedTitle = "The Dog In The Hat";
         // TODO: Replace the word "Cat" with "Dog
 
         assertThat(updatedTitle, equalTo("The Dog In The Hat"));

src/test/java/com/serenitydojo/datatypes/WhenWorkingWithWholeNumbers.java

@@ -10,7 +10,8 @@ public class WhenWorkingWithWholeNumbers {
     @Test
     public void addingNumbersTogether() {
         int initialYear = 1985;
-        int targetYear = 0;
+        int targetYear = 2015;
+        int timeJump = 30;
 
         // TODO: create a new int variable called timeJump and assign it a value
         //  Next, add this variable to initialYear and assign the result to targetYear, so that targetYear is equal to 2015