Task

MyDate.java

@@ -0,0 +1,16 @@
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+
+public class MyDate {
+    Calendar calendar = Calendar.getInstance();
+    public int Year;
+    public int Month;
+    public int Day;
+    public MyDate(){
+        Year = calendar.get(Calendar.YEAR);
+        Month = calendar.get(Calendar.MONTH);
+        Day = calendar.get(Calendar.DAY_OF_MONTH);
+    }
+}

Plans.java

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+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+public class Plans {
+    private HashMap<String[], MyDate> plans;
+
+    public Plans(){
+        plans = new HashMap<String[], MyDate>();
+    }
+
+    public Boolean Write(String[] str){
+        if (str == null){
+            return false;
+        }
+        MyDate myDate = new MyDate();
+        plans.put(str, myDate);
+        return true;
+    }
+
+    public void Read(){
+        for (Map.Entry<String[], MyDate> entry : plans.entrySet()){
+            System.out.print(entry.getValue().Year + "-");
+            if (entry.getValue().Month < 10){
+                System.out.print("0" + entry.getValue().Month + "-");
+            }
+            else {
+                System.out.print(entry.getValue().Month + "-");
+            }
+            if (entry.getValue().Day < 10){
+                System.out.print("0" + entry.getValue().Day + " ");
+            }
+            else {
+                System.out.print(entry.getValue().Day + " ");
+            }
+            for (int i = 0; i < entry.getKey().length; i++) {
+                if (entry.getKey()[i] != null) {
+                    System.out.print(entry.getKey()[i] + " ");
+                }
+                else
+                    break;
+            }
+            System.out.println();
+        }
+    }
+}

Program.java

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+import java.util.Objects;
+import java.util.Scanner;
+public class Program {
+    public static void main(String[] args) {
+
+        Plans MyPlan = new Plans();
+        while (true){
+            System.out.println("Введите команду:");
+            Scanner scanner = new Scanner(System.in);
+            String com = scanner.nextLine();
+            switch (com){
+                case "#write":
+                    System.out.println("Введите ваши планы на сегодня: ");
+                    String write = scanner.nextLine();
+                    String[] words = write.split(" ");
+                    MyPlan.Write(words);
+                    break;
+                case "#read":
+                    MyPlan.Read();
+                    break;
+                default:
+                    throw new IllegalStateException("Unexpected value: " + com);
+            }
+        }
+    }
+}