diff --git a/POMP-DETECT/CallBackTask.java b/POMP-DETECT/CallBackTask.java
new file mode 100644
index 0000000..3e1eda3
--- /dev/null
+++ b/POMP-DETECT/CallBackTask.java
@@ -0,0 +1,123 @@
+//package multicore;
+
+//import spliced.Utilities;
+
+import java.io.IOException;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadMXBean;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Callable;
+
+public class CallBackTask implements Callable {
+    private CallBackTest callBackTest;
+    private int seq;
+    public Utilities utilities;
+    public int start, end;
+
+    public CallBackTask() {
+    }
+
+    public CallBackTask(int i, int start, int end, Utilities utilities) {
+        this.utilities = utilities;
+        seq = i;
+        this.start = start;
+        this.end = end;
+    }
+
+    public static long getCpuTime() {
+        ThreadMXBean bean = ManagementFactory.getThreadMXBean();
+        return bean.isCurrentThreadCpuTimeSupported() ? bean.getCurrentThreadCpuTime() : 0L;
+    }
+
+    public Object call() throws IOException {
+
+        long startCpuTimeNano = getCpuTime();
+
+        long begTest = new java.util.Date().getTime();
+        System.out.println("STARTING TASK: " + seq);
+
+        List<Utilities.Information> final_list = new ArrayList<Utilities.Information>(25000);
+
+        try {
+
+            int count = 0, hamming_distance, index, min_length;
+
+            for (int i = start; i <= end; i++) {
+
+                if(i == Utilities.union_list.size()){
+                    break;
+                }
+
+                index = Utilities.union_list.get(i);
+                String read = Utilities.reads.get(index);
+
+                Utilities.reads.set(index, "");
+
+                if (Utilities.hash_map_one.containsKey(index) && Utilities.hash_map_two.containsKey(index)) {
+
+                    List<Utilities.Information> info_list = utilities.processUMR(index, read.length());
+
+                    final_list.addAll(info_list);
+
+                    info_list.clear();
+
+                } else {
+
+                    hamming_distance = 0;
+                    min_length = 10;
+
+                    List<Utilities.UMRInfo> list = utilities.PreProcessUMR(index, read);
+
+                    if (list.size() > 0) {
+
+                        List<Utilities.Information> info_list = utilities.processUMR(list, hamming_distance,
+                                min_length, index, read.length());
+
+                        if (info_list.size() <= 0) {
+
+                            min_length = 8;
+
+                            info_list = utilities.processUMR(list, hamming_distance, min_length, index, read.length());
+                        }
+
+                        final_list.addAll(info_list);
+                    }
+                }
+
+                count++;
+
+                if (count % 1000 == 0) {
+
+                    System.out.println("COMPLETED " + count + " BY " + seq + " [" + final_list.size() + "]");
+
+                    long taskCpuTimeNano = getCpuTime() - startCpuTimeNano;
+                    double time_in_seconds = (double) taskCpuTimeNano / 1000000000.0;
+
+                    Double secs = (new java.util.Date().getTime() - begTest) * 0.001;
+                    System.out.println("TASK - " + seq + " TOOK " + time_in_seconds + " SECONDS");
+                }
+            }
+        } catch (Exception x) {
+            x.printStackTrace();
+            System.out.println(x.getMessage());
+        }
+
+        callBackTest.callBack(seq, final_list);
+
+        long taskCpuTimeNano = getCpuTime() - startCpuTimeNano;
+        double time_in_seconds = (double) taskCpuTimeNano / 1000000000.0;
+
+        Double secs = (new java.util.Date().getTime() - begTest) * 0.001;
+        System.out.println("TASK - " + seq + " TOOK " + time_in_seconds + " SECONDS");
+        return null;
+    }
+
+    public void setCaller(CallBackTest callBackTest) {
+        this.callBackTest = callBackTest;
+    }
+
+    public CallBackTest getCaller() {
+        return callBackTest;
+    }
+}