diff --git a/DeansBequest.iml b/DeansBequest.iml
index 1efa802..011b29b 100644
--- a/DeansBequest.iml
+++ b/DeansBequest.iml
@@ -48,5 +48,15 @@
         <SOURCES />
       </library>
     </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.13.1/junit-4.13.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
   </component>
 </module>
\ No newline at end of file
diff --git a/src/voltag/volt.java b/src/voltag/volt.java
new file mode 100644
index 0000000..7cb6fb5
--- /dev/null
+++ b/src/voltag/volt.java
@@ -0,0 +1,82 @@
+package voltag;
+
+import java.util.Arrays;
+
+public class volt
+{
+    double[] voltage = new double[72];
+    double mean;
+
+    public volt(){}
+
+    public volt(double[] Voltage)
+    {
+        this.voltage=Voltage;
+    }
+
+    public double calc_mean()
+    {
+        double avg=0;
+        for (int i=0;i<voltage.length;i++)
+        {
+            avg+=voltage[i];
+        }
+        mean = avg/72;
+
+        return getMean();
+    }
+
+    public double getMean()
+    {
+        return mean;
+    }
+    public void setMean(double newmean)
+    {
+        mean = newmean;
+    }
+
+    public String report()
+    {
+        //hours more than mean by 10%
+        double[] hours10 = new double[72];
+        double bigger = 1.10 * mean;
+        double smaller = 0.90 * mean;
+        int count = 0;
+        for(int i = 0; i < voltage.length; i++)
+        {
+
+            if(voltage[i] > bigger || voltage[i] < smaller )
+            {
+                hours10[count] = voltage[i];
+                count++;
+            }
+
+        }
+        //from one to another by 15%
+        double[] hours15 = new double[72];
+        int count2 = 0;
+        while(count2 < 71)
+        {
+           for(int j = 0; j < voltage.length; j++)
+           {
+               int limit = voltage.length - 2;
+               if(j <= limit)
+               {
+                   double change = Math.abs(voltage[j] - voltage[j + 1]);
+                   if(change > mean * 1.15)
+                   {
+                       hours15[j] = voltage[j];
+                       hours15[j+1] = voltage[j+1];
+
+                   }
+               }
+
+           }
+           count2++;
+        }
+
+        return "The hours more  than 10% of mean are: " + Arrays.toString(hours10) + "\nAdjacent hours of voltage difference more than  15% of mean are: " + Arrays.toString(hours15);
+
+
+    }
+}
diff --git a/src/voltag/voltTest.java b/src/voltag/voltTest.java
new file mode 100644
index 0000000..ab24722
--- /dev/null
+++ b/src/voltag/voltTest.java
@@ -0,0 +1,40 @@
+package voltag;
+
+import java.util.Arrays;
+import java.util.Random;
+
+import static org.junit.Assert.*;
+
+public class voltTest
+{
+
+    @org.junit.Test
+    public void calc_mean()
+    {
+        Random r = new Random();
+        double[] feb = new double[72];
+        Arrays.fill(feb, 100);
+        volt v1 = new volt(feb);
+        v1.calc_mean();
+        double mean = v1.getMean();
+
+        assertEquals(100,v1.getMean(),0);
+    }
+
+
+
+    @org.junit.Test
+    public void report()
+    {
+        Random r = new Random();
+
+        double[] hours = new double[72];
+        for(int i = 0; i < hours.length; i++)
+            hours[i] = r.nextInt(50,80);
+
+        volt v1 = new volt(hours);
+       v1.setMean(10);
+        System.out.println(v1.report());
+
+    }
+}
\ No newline at end of file