Merge Lambda

src/se/edu/inclass/Main.java

@@ -8,6 +8,8 @@
 import java.util.ArrayList;
 import java.util.stream.Collectors;
 
+import static java.util.stream.Collectors.toList;
+
 public class Main {
 
     private TaskNameComparator taskNameComparator;
@@ -21,6 +23,15 @@ public static void main(String[] args) {
 
         System.out.println("Total number of deadlines: " + countDeadlines(tasksData));
 
+
+        printDdlUsingStreams(tasksData);
+
+        for(Task t: filterByString(tasksData, "11")) {
+            System.out.println(t);
+        }
+
+        System.out.println("No of ddl: " + countDdlUsingStreams(tasksData));
+
     }
 
     private static int countDeadlines(ArrayList<Task> tasksData) {
@@ -33,17 +44,48 @@ private static int countDeadlines(ArrayList<Task> tasksData) {
         return count;
     }
 
+    public static int countDdlUsingStreams(ArrayList<Task> tasksData) {
+        System.out.println("Count using streams: ");
+        int count;
+        count = (int) tasksData.stream()
+                .filter((t) -> t instanceof Deadline)
+                .count();
+        return count;
+    }
+
     public static void printData(ArrayList<Task> tasksData) {
         for (Task t : tasksData) {
             System.out.println(t);
         }
     }
 
+    public static void printDataUsingStreams(ArrayList<Task> tasksData) {
+        System.out.println("Print using streams: ");
+        tasksData.stream()
+                .forEach(System.out::println);
+    }
+
     public static void printDeadlines(ArrayList<Task> tasksData) {
         for (Task t : tasksData) {
             if (t instanceof Deadline) {
                 System.out.println(t);
             }
         }
     }
+
+    public static void printDdlUsingStreams(ArrayList<Task> tasksData) {
+        tasksData.stream()
+                .filter((s) -> s instanceof Deadline)
+                .sorted((a, b) -> a.getDescription().toLowerCase().compareTo(b.getDescription().toLowerCase()))
+                .forEach(System.out::println);
+    }
+
+    public static ArrayList<Task> filterByString(ArrayList<Task> tasksData, String filterString) {
+        ArrayList<Task> filteredTaskList = (ArrayList<Task>) tasksData.stream()
+                .filter((s) -> s.getDescription().contains(filterString))
+                .collect(toList());
+
+        return filteredTaskList;
+    }
+
 }