I have a question about Java date function

public static void main(String[] args) {

    HashMap<String, String> map = new HashMap<String, String>();

    try {
        File file = new File("C:\\Users\\kimsuhee\\workspace\\Capstone\\src\\capstonedata.txt");
        // Add file to BufferedReader variable
        BufferedReader reader = new BufferedReader(new FileReader(file));

        // Variable line to read files one line at a time
        String line = null;

        String[] splitStr = null; // array splitStr to split one line

        while(((line = reader.readLine())!=null) { // read one line at a time and put it in line
            If (!line.contains("\t") // if there is no tab,
                Continue; // Just let it slide
            splitStr = line.split("\t"); // one line separated by tabs
            map.put(splitStr[0],splitStr[1]); // receive the first item as a key in the array
                                                    // The second item on the 0th is value
                                                    // Accepted and placed at the first of the array

        }
        TreeMap<String, String> tm = new TreeMap<String, String>(map); // HashMap
                                                                        // With TreeMap
                                                                        // change
        Iterator<String> iteratorKey = tm.keySet();iterator(); // ascending key values
                                                                // Sort (default)

        while (iteratorKey.hasNext()) {
            String key = iteratorKey.next();
            String value = tm.get(key);
        }

        Map.Entry<String, String>[]  kv = tm.entrySet().toArray(newMap.Entry[0]); //entrySet() is used when both key and value are required, creating a new Map.Entry object kv as an array

        Random = new Random(); //Create Random Object

        Map.Entry<String, String> keyValue = kv[rand.nextInt(kv.length)]; //Create a new Map.Entry object keyValue is an object that randomly loaded kv

        for(int i = 0; i<5; i++){
            System.out.println(kv[rand.nextInt(kv.length)]);
        }

        reader.close();