diff --git a/java/.gitignore b/java/.gitignore
new file mode 100644
index 0000000..0ef0cca
--- /dev/null
+++ b/java/.gitignore
@@ -0,0 +1,66 @@
+
+# Created by https://www.gitignore.io/api/intellij+all
+
+### Intellij+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+*.iml
+
+# User-specific stuff:
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/dictionaries
+
+# Sensitive or high-churn files:
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.xml
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+
+# Gradle:
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# CMake
+cmake-build-debug/
+
+# Mongo Explorer plugin:
+.idea/**/mongoSettings.xml
+
+## File-based project format:
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Ruby plugin and RubyMine
+/.rakeTasks
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+### Intellij+all Patch ###
+# Ignores the whole idea folder
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
+
+.idea/
+
+# End of https://www.gitignore.io/api/intellij+all
diff --git a/java/Test/TestFibonacci.java b/java/Test/TestFibonacci.java
new file mode 100644
index 0000000..98fcc60
--- /dev/null
+++ b/java/Test/TestFibonacci.java
@@ -0,0 +1,38 @@
+import junit.framework.Assert;
+import org.junit.jupiter.api.Test;
+
+public class TestFibonacci{
+
+    @Test
+    public void testCase1(){
+        int input = 0;
+        int expectedOutput = 0;
+        int actualOutput = Fibonacci.findNthFibonacci(input);
+        Assert.assertEquals(expectedOutput, actualOutput);
+    }
+
+    @Test
+    public void testCase2(){
+        int input = 1;
+        int expectedOutput = 1;
+        int actualOutput = Fibonacci.findNthFibonacci(input);
+        Assert.assertEquals(expectedOutput, actualOutput);
+    }
+
+    @Test
+    public void testCase3(){
+        int input = 2;
+        int expectedOutput = 1;
+        int actualOutput = Fibonacci.findNthFibonacci(input);
+        Assert.assertEquals(expectedOutput, actualOutput);
+    }
+
+    @Test
+    public void testCase4(){
+        int input = 4;
+        int expectedOutput = 2;
+        int actualOutput = Fibonacci.findNthFibonacci(input);
+        Assert.assertEquals(expectedOutput, actualOutput);
+    }
+
+}
\ No newline at end of file
diff --git a/java/Test/TestLargestDifference.java b/java/Test/TestLargestDifference.java
new file mode 100644
index 0000000..ae14ef6
--- /dev/null
+++ b/java/Test/TestLargestDifference.java
@@ -0,0 +1,37 @@
+import junit.framework.Assert;
+import org.junit.jupiter.api.Test;
+
+public class TestLargestDifference{
+
+    @Test
+    public void testCase1(){
+        int[] inputArray = {1,5,9,16,28,35};
+        int expectedAnswer = 34;
+        int actualAnswer = LargestDifference.findLargestDifference(inputArray);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    public void testCase2(){
+        int[] inputArray = {7,19,15,13,3};
+        int expectedAnswer = 12;
+        int actualAnswer = LargestDifference.findLargestDifference(inputArray);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    public void testCase3(){
+        int[] inputArray = {1,1,1,1,1,1,1};
+        int expectedAnswer = 0;
+        int actualAnswer = LargestDifference.findLargestDifference(inputArray);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    public void testCase4(){
+        int[] inputArray = {5,4,3,2,1};
+        int expectedAnswer = -1;
+        int actualAnswer = LargestDifference.findLargestDifference(inputArray);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+}
\ No newline at end of file
diff --git a/java/Test/TestNumberOfRepeats.java b/java/Test/TestNumberOfRepeats.java
new file mode 100644
index 0000000..f1ad739
--- /dev/null
+++ b/java/Test/TestNumberOfRepeats.java
@@ -0,0 +1,42 @@
+import junit.framework.Assert;
+import org.junit.jupiter.api.Test;
+
+public class TestNumberOfRepeats {
+
+    @Test
+    private void testCase1(){
+        String a = "abcde";
+        String b = "abcdabcdabcd";
+        int expectedAnswer = -1;
+        int actualAnswer = NumberOfRepeats.findNumberOfRepeats(a,b);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    private void testCase2(){
+        String a = "abcd";
+        String b = "abcdabdcabcd";
+        int expectedAnswer = -1;
+        int actualAnswer = NumberOfRepeats.findNumberOfRepeats(a,b);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    private void testCase3(){
+        String a = "aaab";
+        String b = "baaabaa";
+        int expectedAnswer = 3;
+        int actualAnswer = NumberOfRepeats.findNumberOfRepeats(a,b);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+    @Test
+    private void testCase4(){
+        String a = "abcde";
+        String b = "abcdabcdabcd";
+        int expectedAnswer = -1;
+        int actualAnswer = NumberOfRepeats.findNumberOfRepeats(a,b);
+        Assert.assertEquals(expectedAnswer, actualAnswer);
+    }
+
+}
\ No newline at end of file
diff --git a/java/src/Fibonacci.java b/java/src/Fibonacci.java
new file mode 100644
index 0000000..e7cb16f
--- /dev/null
+++ b/java/src/Fibonacci.java
@@ -0,0 +1,6 @@
+public class Fibonacci{
+    public static int findNthFibonacci(int n){
+        /* TODO: write your code here */
+        throw new UnsupportedOperationException();
+    }
+}
\ No newline at end of file
diff --git a/java/src/LargestDifference.java b/java/src/LargestDifference.java
new file mode 100644
index 0000000..764be02
--- /dev/null
+++ b/java/src/LargestDifference.java
@@ -0,0 +1,6 @@
+public class LargestDifference{
+    public static int findLargestDifference(int[] inputArray){
+        /* TODO: write your code here */
+        throw new UnsupportedOperationException();
+    }
+}
\ No newline at end of file
diff --git a/java/src/NumberOfRepeats.java b/java/src/NumberOfRepeats.java
new file mode 100644
index 0000000..8061e6e
--- /dev/null
+++ b/java/src/NumberOfRepeats.java
@@ -0,0 +1,6 @@
+public class NumberOfRepeats{
+    public static int findNumberOfRepeats(String a, String b){
+        /* TODO: write your code here */
+        throw new UnsupportedOperationException();
+    }
+}
\ No newline at end of file