done

PhoneBook.java

@@ -3,5 +3,44 @@
 /**
  * Created by leon on 1/23/18.
  */
+import java.util. *;
 public class PhoneBook {
+    
+    TreeMap<String, String> phoneBook = new TreeMap<String, String>();
+    
+    public String add(String name, String number) {
+        phoneBook.put(name, number);
+        return name + " " + number;
+    }
+    
+    public String remove(String name) {
+        phoneBook.remove(name);
+        return name;
+        
+    }
+    
+    public String lookup(String name) {
+        return phoneBook.get(name);
+        
+        
+    }
+    
+    public String reverseLookup(String number) {
+        for(Map.Entry<String, String> entry : phoneBook.entrySet()) {
+            String value = entry.getValue();
+            if(value.equals(number)) {
+                return entry.getKey();
+            }
+        }
+        return "";
+    }
+    
+    public void display() {
+        for(Map.Entry<String, String> entry : phoneBook.entrySet()) {
+            String value = entry.getValue();
+            System.out.println(entry.getKey() + " -> " + entry.getValue());
+        }
+    }
+    
+    
 }

PhoneBookTest.java

@@ -1,5 +1,4 @@
 
-
 import static org.junit.Assert.*;
 import org.junit.After;
 import org.junit.Before;
@@ -29,6 +28,60 @@ public class PhoneBookTest
     public void setUp()
     {
     }
+    PhoneBook phonebook = new PhoneBook();
+    @Test
+    public void addTest() {
+        //Expected
+        String expected = "Lewis Dominguez 3023005754";
+        //Actual
+        String actual = phonebook.add("Lewis Dominguez", "3023005754");
+        
+        assertEquals(expected, actual);
+    }
+    
+    @Test
+    public void removeTest() {
+        phonebook.add("Lewis Dominguez", "3023005754");
+        //Expected
+        String expected = "Lewis Dominguez";
+        //Actual
+        String actual = phonebook.remove("Lewis Dominguez");
+        
+        assertEquals(expected, actual);
+    }
+    
+    @Test
+    public void lookupTest() {
+        phonebook.add("Lewis Dominguez", "3023005754");
+        //Expected
+        String expected = "3023005754";
+        //Actual
+        String actual = phonebook.lookup("Lewis Dominguez");
+        
+        assertEquals(expected, actual);
+    }
+    
+    @Test
+    public void reverseLookupTest() {
+        phonebook.add("Lewis Dominguez", "3023005754");
+        //Expected
+        String expected = "Lewis Dominguez";
+        //Actual
+        String actual = phonebook.reverseLookup("3023005754");
+        
+        assertEquals(expected, actual);
+    }
+    
+    // @Test
+    // public void displayTest() {
+        // phonebook.add("Lewis Dominguez", "3023005754");
+        // //Expected
+        // String expected = "Lewis Dominguez -> 3023005753";
+        // //Actual
+        // String actual = phonebook.display("Lewis Dominguez 3023005754");
+        
+        // assertEquals(expected, actual);
+    // }
 
     /**
      * Tears down the test fixture.

package.bluej

@@ -3,18 +3,18 @@ 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=461
+objectbench.height=100
+objectbench.width=597
 package.divider.horizontal=0.6
-package.divider.vertical=0.8007380073800738
-package.editor.height=427
-package.editor.width=674
-package.editor.x=427
-package.editor.y=143
-package.frame.height=600
-package.frame.width=800
+package.divider.vertical=0.834108527131783
+package.editor.height=531
+package.editor.width=495
+package.editor.x=288
+package.editor.y=38
+package.frame.height=703
+package.frame.width=621
 package.numDependencies=0
-package.numTargets=1
+package.numTargets=2
 package.showExtends=true
 package.showUses=true
 project.charset=UTF-8
@@ -23,4 +23,17 @@ readme.name=@README
 readme.width=47
 readme.x=10
 readme.y=10
-
+target1.height=50
+target1.name=PhoneBookTest
+target1.showInterface=false
+target1.type=UnitTestTargetJunit4
+target1.width=130
+target1.x=100
+target1.y=10
+target2.height=50
+target2.name=PhoneBook
+target2.showInterface=false
+target2.type=ClassTarget
+target2.width=100
+target2.x=70
+target2.y=70