[Yao Chenguang] iP

src/main/java/Qchat.java

@@ -0,0 +1,62 @@
+import javax.swing.*;
+import java.util.Scanner;
+
+public class Qchat {
+
+   static final String  WELCOME_GREETING = new String(
+           "Qchat ,A truly humanized intelligent voice assisstant \n"
+                   +"knows better about life and better about you\n"
+                   +"What can I do for you?\n"
+                   +"----------------------------------------------------------------\n") ;
+   static final String GOODBYE_GREETING = new String(
+           "--------------------------------------------------------\n" +
+            "goodbye\n"+ "Qchat, your life-long trusted companion\n");
+
+
+
+
+   static String CommandReader(){
+
+       Scanner in = new Scanner(System.in);
+       String command ;
+       command = in.nextLine();
+
+       switch (command){
+       case "Bye":
+           System.out.print(GOODBYE_GREETING);
+           break;
+       case "list":
+           Todolist.HandleList();
+           break;
+
+
+       default:
+           echo(command);
+           break;
+
+       }
+       return command;
+
+
+
+   }
+
+    private static void echo(String command) {
+        System.out.print("---------------------------------------------\n");
+        System.out.print(command +"\n");
+        System.out.print("---------------------------------------------\n");
+    }
+
+    public static void main(String[] args) {
+
+       System.out.print(WELCOME_GREETING);
+       String command = "" ;
+       while(!command.equals("Bye")){
+
+           command = CommandReader();
+
+       }
+
+   }
+
+}

src/main/java/Todolist.java

@@ -0,0 +1,131 @@
+import java.util.Scanner;
+
+public class Todolist {
+    private static final int MAX_LIST_LENGTH = 100;
+    static String[] todolist = new String[MAX_LIST_LENGTH];
+    static boolean[] isDoneList = new boolean[MAX_LIST_LENGTH];
+
+    static int ListCount= 0;
+    static Scanner in = new Scanner(System.in);
+
+    public static void AddToList(){
+        String Task= in.nextLine();
+        todolist[ListCount] = Task;
+        isDoneList[ListCount]= false;
+        ListCount++;
+        return;
+    }
+
+
+
+    static void HandleList(){
+        PrintList();
+        String command ="";
+
+        while(!command.equals("quit")){
+            command = in.nextLine();
+            switch (command){
+            case"add":
+                AddToList();
+                System.out.println("Task added");
+                PrintList();
+                break;
+            case"quit":
+                System.out.println("Task change complete");
+                break;
+            case"help":
+                System.out.print("supported commands: add , quit , help , mark,unmark ,clear, list\n");
+                break;
+            case "clear":
+                ClearList();
+                ClearisDoneList();
+                System.out.print("list cleared\n");
+                break;
+            case"mark":
+                SetDone();
+                break;
+            case"unmark":
+                SetUndone();
+                break;
+            case"list":
+                PrintList();
+                break;
+            case"":
+                break;
+            default:
+                System.out.println("Sorry, I can not understand this command, enter \"help\" for help\n");
+                break;
+            }
+
+        }
+
+    }
+
+    public static void PrintList(){
+        int i=1;
+        System.out.print("---------------------------------------------\n");
+        System.out.println("Here are your current tasks in your list:");
+        for (String s :todolist ){
+            if(s == null){
+                continue;
+            }
+            System.out.printf("%d."+GetIcon(i)+s+"\n",i);
+            i++;
+        }
+        System.out.print("---------------------------------------------\n");
+    }
+    static void ClearList(){
+        int i;
+        for (i=0;i<MAX_LIST_LENGTH;i++){
+           todolist[i]=null;
+        }
+        ListCount = 0;
+    }
+
+    static void ClearisDoneList(){
+        int i;
+        for (i=0;i<MAX_LIST_LENGTH;i++){
+            isDoneList[i]=false;
+        }
+    }
+
+    static String GetIcon(int i){
+        String s= isDoneList[i-1]?"x":" ";
+        return "["+s+"]";
+    }
+
+    static void SetDone(){
+        System.out.println("please type the task number you want to set as done \n");
+        PrintList();
+        int number= in.nextInt();
+
+        while(number>ListCount){
+            System.out.println("task do not exist, pleas enter a valid task number ");
+            number= in.nextInt();
+        }
+
+        isDoneList[number-1]=true;
+        System.out.print("I've marked this task as done:");
+        System.out.printf(GetIcon(number)+todolist[number-1]+"\n");
+    }
+
+    static void SetUndone(){
+        System.out.println("please type the task number you want to set as not done \n");
+        PrintList();
+        int number= in.nextInt();
+
+        while(number>ListCount){
+            System.out.println("task do not exist, pleas enter a valid task number ");
+            number= in.nextInt();
+        }
+
+        isDoneList[number-1]=false;
+        System.out.print("I've marked this task as not done:");
+        System.out.printf(GetIcon(number)+todolist[number-1]+"\n");
+
+    }
+
+
+}
+
+