diff --git a/AliceAndBobEngine.java b/AliceAndBobEngine.java
index 28b5e05..c2d3230 100644
--- a/AliceAndBobEngine.java
+++ b/AliceAndBobEngine.java
@@ -10,8 +10,11 @@ public class AliceAndBobEngine {
      * @return `true` if `input` is "Alice"
      */
     public Boolean isAlice(String input) {
-        return null;
-    }
+        if (input == "Alice"){
+       return true;
+   }else return false;
+    
+}
 
     /**
      * return `true` if the input value is "Bob"
@@ -19,8 +22,11 @@ public Boolean isAlice(String input) {
      * @return `true` if `input` is "Bob"
      */
     public Boolean isBob(String input) {
-        return null;
-    }
+        if (input == "Bob"){
+        return true;
+    }else return false;
+    
+}
 
     /**
      * return `true` if the input value is "Alice" or "Bob"
@@ -28,8 +34,11 @@ public Boolean isBob(String input) {
      * @return `true` if `input` is "Alice" or "Bob"
      */
     public Boolean isAliceOrBob(String input) {
-        return null;
-    }
+        if (input == "Alice"||input == "Bob"){
+            return true;
+    }else return false;
+    
+}
 
     /**
      * if the input value is "Alice" or "Bob", then
@@ -42,6 +51,13 @@ public Boolean isAliceOrBob(String input) {
      * @return respective String value
      */
     public String getGreeting(String input) {
-        return null;
+        if (input == "Alice"){
+        return "Hello Alice";
+    }  else if (input == "Bob"){
+        return "Hello Bob";
+    }  else {
+        return "Begone, input!You're a stranger!";
     }
 }
+};
+
diff --git a/package.bluej b/package.bluej
index 143e572..037d7e4 100644
--- a/package.bluej
+++ b/package.bluej
@@ -1,20 +1,32 @@
 #BlueJ package file
-editor.fx.0.height=0
-editor.fx.0.width=0
-editor.fx.0.x=0
-editor.fx.0.y=0
-objectbench.height=101
-objectbench.width=776
+dependency1.from=IsBobTest
+dependency1.to=AliceAndBobEngine
+dependency1.type=UsesDependency
+dependency2.from=IsAliceOrBobTest
+dependency2.to=AliceAndBobEngine
+dependency2.type=UsesDependency
+dependency3.from=GetGreetingTest
+dependency3.to=AliceAndBobEngine
+dependency3.type=UsesDependency
+dependency4.from=IsAliceTest
+dependency4.to=AliceAndBobEngine
+dependency4.type=UsesDependency
+editor.fx.0.height=722
+editor.fx.0.width=800
+editor.fx.0.x=240
+editor.fx.0.y=26
+objectbench.height=145
+objectbench.width=1256
 package.divider.horizontal=0.6
-package.divider.vertical=0.8007380073800738
-package.editor.height=427
-package.editor.width=674
-package.editor.x=181
-package.editor.y=109
-package.frame.height=600
-package.frame.width=800
-package.numDependencies=0
-package.numTargets=1
+package.divider.vertical=0.7738095238095238
+package.editor.height=513
+package.editor.width=1162
+package.editor.x=0
+package.editor.y=23
+package.frame.height=730
+package.frame.width=1280
+package.numDependencies=4
+package.numTargets=5
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -24,9 +36,37 @@ readme.width=47
 readme.x=10
 readme.y=10
 target1.height=50
-target1.name=Main
+target1.name=IsAliceTest
 target1.showInterface=false
-target1.type=ClassTarget
-target1.width=80
-target1.x=70
+target1.type=UnitTestTargetJunit4
+target1.width=90
+target1.x=140
 target1.y=10
+target2.height=50
+target2.name=IsBobTest
+target2.showInterface=false
+target2.type=UnitTestTargetJunit4
+target2.width=80
+target2.x=70
+target2.y=70
+target3.height=50
+target3.name=IsAliceOrBobTest
+target3.showInterface=false
+target3.type=UnitTestTargetJunit4
+target3.width=120
+target3.x=160
+target3.y=70
+target4.height=50
+target4.name=AliceAndBobEngine
+target4.showInterface=false
+target4.type=ClassTarget
+target4.width=130
+target4.x=10
+target4.y=130
+target5.height=50
+target5.name=GetGreetingTest
+target5.showInterface=false
+target5.type=UnitTestTargetJunit4
+target5.width=120
+target5.x=150
+target5.y=130