Merge pull request #3 from yongmingyang/branch-Level-9

Level-9

src/main/java/Command.java

@@ -1,12 +1,11 @@
 package main.java;
 
-import java.io.IOException;
+import java.util.ArrayList;
 
 /**
  * The command class is used to handle and execute commands
  * after input by user is processed by the parser.
  */
-
 public class Command {
     private String task;
     private String action;
@@ -58,6 +57,23 @@ public void execute(TaskList taskList, Ui ui) throws DukeException {
         } else if (action.equals("event")) {
             taskList.addEvent(task);
             ui.showAdded();
+        } else if (action.equals("find")) {
+            String[] split = task.split("find ");
+            String toFind = split[1];
+            ArrayList<Task> list = taskList.getList();
+            ArrayList<Task> filtered = new ArrayList<>();
+            if(list.size() == 0) {
+                System.out.println("You do not have any tasks yet");
+            } else {
+                System.out.println("Here are the tasks that matches '" + toFind + "'");
+                for (int i = 0; i < list.size(); i++) {
+                    String task = list.get(i).toString();
+                    if (task.contains(toFind)) {
+                        filtered.add(list.get(i));
+                    }
+                }
+                ui.showList(filtered);
+            }
         } else {
             ui.showInvalidCommand();
         }

src/main/java/Duke.java

@@ -43,8 +43,6 @@ public void run(){
                 Command nextCommand = parser.interpret(input);
                 nextCommand.execute(taskList, ui);
                 isEnd = nextCommand.isEnd();
-            } catch (IOException e) {
-                ui.showError(e);
             } catch (DukeException e) {
                 ui.showError(e);
             }

src/main/java/Parser.java

@@ -26,6 +26,8 @@ public Command interpret (String line) {
             return new Command(line, "event");
         } else if (line.indexOf("done") == 0 || line.equals("bye") || line.equals("list")) {
             return new Command(line, line);
+        } else if (line.indexOf("find") == 0) {
+            return new Command(line, "find");
         } else {
             return new Command(line, null);
         }