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src/main/java/com/serenitydojo/Cat.java

@@ -0,0 +1,30 @@
+package com.serenitydojo;
+
+public class Cat {
+    private String name;
+    private String favoriteFood;
+    private int age;
+
+    public Cat(String name, String favoriteFood, int age) {
+        this.name = name;
+        this.favoriteFood = favoriteFood;
+        this.age = age;
+    }
+
+    public void setFavoriteFood(String favoriteFood) {
+        this.favoriteFood = favoriteFood;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getFavoriteFood() {
+        return favoriteFood;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+}

src/main/java/com/serenitydojo/Dog.java

@@ -0,0 +1,25 @@
+package com.serenitydojo;
+
+public class Dog {
+    public String name;
+    public String favoriteToy;
+    public int age;
+
+    public Dog(String name, String favoriteToy, int age) {
+        this.name = name;
+        this.favoriteToy = favoriteToy;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getFavoriteToy() {
+        return favoriteToy;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}

src/test/java/com/serenitydojo/WhenCreatingObjectsTest.java

@@ -0,0 +1,33 @@
+package com.serenitydojo;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class WhenCreatingObjectsTest {
+
+    @Test
+    public void creating_a_cat(){
+        String name = "Felix";
+        String favoriteFood = "Tuna";
+        int age = 4;
+
+        // instantiate the Cat class as an object: Felix
+        Cat felix = new Cat("Felix", "Tuna", 4); // this is the constructor for the Cat class
+
+        System.out.println(felix.getName());
+        System.out.println(felix.getFavoriteFood());
+
+        // instantiate the Cat class as an object: Spot
+        Cat spot = new Cat("Spot", "Fish", 3); // this is the constructor for the Cat class
+        System.out.println("Spot's age is " + spot.getAge());
+    }
+
+    @Test
+    public void creating_a_dog(){
+        Dog fido = new Dog("Fido", "Bone", 5);
+        Assert.assertEquals("Fido", fido.getName());
+        Assert.assertEquals("Bone", fido.getFavoriteToy());
+        Assert.assertEquals(5, fido.getAge());
+    }
+
+}

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

@@ -2,6 +2,7 @@
 
 import org.junit.Test;
 
+import static java.lang.Math.round;
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
@@ -18,6 +19,8 @@ public void convertToFarenheit() {
 
         // TODO: Use a floating point calculation to calculate the farenheit equivalent of the celcius value.
 
+        farenheit = (double) 9 / 5 * celcius + 32;
+
         assertThat(farenheit, equalTo(80.6));
     }
 
@@ -32,6 +35,8 @@ public void convertMetersToFeet() {
 
         // TODO: Use a floating point calculation to calculate the correct weight in pounds
 
+        weightInPounds = weightInKilograms * 2.20462;
+
         assertThat(weightInPounds, equalTo(110.231));
 
     }

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

@@ -14,6 +14,8 @@ public void convertToLowerCase() {
         String lowerCaseTitle = "";
         // TODO: Convert the book title to lower case and assign it to the lowerCaseTitle variable
 
+        lowerCaseTitle = bookTitle.toLowerCase();
+
         assertThat(lowerCaseTitle, equalTo("the cat in the hat"));
 
     }
@@ -25,6 +27,8 @@ public void convertToUpperCase() {
         String upperCaseTitle = "";
         // TODO: Convert the book title to upper case and assign it to the lowerCaseTitle variable
 
+        upperCaseTitle = bookTitle.toUpperCase();
+
         assertThat(upperCaseTitle, equalTo("THE CAT IN THE HAT"));
     }
 
@@ -35,6 +39,8 @@ public void trimExtraSpaces() {
         String trimmedTitle = "";
         // TODO: Trim the spaces before and after the title text
 
+        trimmedTitle = bookTitle.trim();
+
         assertThat(trimmedTitle, equalTo("The Cat In The Hat"));
     }
 
@@ -45,6 +51,8 @@ public void findTheLengthOfAString() {
         int length = 0;
         // TODO: Find the number of characters in the string
 
+        length = bookTitle.length();
+
         assertThat(length, equalTo(18));
     }
 
@@ -55,6 +63,8 @@ public void replacingAText() {
         String updatedTitle = "";
         // TODO: Replace the word "Cat" with "Dog
 
+        updatedTitle = bookTitle.replace("Cat", "Dog");
+
         assertThat(updatedTitle, equalTo("The Dog In The Hat"));
     }
 }

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

@@ -13,8 +13,13 @@ public void addingNumbersTogether() {
         int targetYear = 0;
 
         // TODO: create a new int variable called timeJump and assign it a value
+
+        int timeJump = 30;
+
         //  Next, add this variable to initialYear and assign the result to targetYear, so that targetYear is equal to 2015
 
+        targetYear = initialYear + timeJump;
+
         assertThat(targetYear, equalTo(2015));
     }
 }