FirstCommit

second commit

3rd commit - made basic skeleton

3rd commit - made basic skeleton

new

update for thread

RealService

test for.

Correct using bytearray.

Correct using bytearray.

Correct using bytearray.

app/src/main/AndroidManifest.xml

@@ -2,6 +2,11 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.flywithu.carnav"
     xmlns:tools="http://schemas.android.com/tools">
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
+
+    <uses-feature android:name="android.hardware.usb.host" />
 
     <application
         android:allowBackup="true"
@@ -27,12 +32,24 @@
                 android:resource="@xml/device_filter" />
 
         </service>
+
+
+
+        <service
+            android:name=".RestartService"
+            android:enabled="true"
+            android:exported="true" />
+        <receiver android:name=".AlarmReceiver"/>
+        <receiver android:name=".RebootReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED"/>
+            </intent-filter>
+        </receiver>
+
+
+
     </application>
 
-    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
-
-    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
     <uses-sdk tools:overrideLibrary="com.hoho.android.usbserial"/>
 </manifest>

app/src/main/java/com/flywithu/carnav/AlarmReceiver.java

@@ -5,7 +5,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
 
-public class AlarmRecever extends BroadcastReceiver{
+public class AlarmReceiver extends BroadcastReceiver{
 
     @Override
     public void onReceive(Context context, Intent intent) {

app/src/main/java/com/flywithu/carnav/MainActivity.java

@@ -1,35 +1,121 @@
 package com.flywithu.carnav;
 
-import androidx.appcompat.app.AppCompatActivity;
-
+import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.hardware.usb.UsbDeviceConnection;
+import android.hardware.usb.UsbManager;
 import android.os.Bundle;
-import android.util.Log;
 import android.widget.Toast;
 
+import androidx.appcompat.app.AppCompatActivity;
+
+import com.hoho.android.usbserial.driver.UsbSerialDriver;
+import com.hoho.android.usbserial.driver.UsbSerialPort;
+import com.hoho.android.usbserial.driver.UsbSerialProber;
+
+import java.util.List;
+
 public class MainActivity extends AppCompatActivity {
 
-    private Intent serviceIntent;
     public static final String SERVICECMD = "com.android.music.musicservicecommand";
     public static final String TAG = "carnav";
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
+    static final String ACTION_USB_PERMISSION = "com.flywithu.carnav.USB_PERMISSION";
+    private Intent serviceIntent;
+    private BroadcastReceiver usbReceiver = null;
+
+    private void goService() {
+
 
         if (RealService.serviceIntent == null) {
+
             serviceIntent = new Intent(this, RealService.class);
             startService(serviceIntent);
+            Toast.makeText(getApplicationContext(), "new start", Toast.LENGTH_LONG).show();
         } else {
             serviceIntent = RealService.serviceIntent;//getInstance().getApplication();
             Toast.makeText(getApplicationContext(), "already", Toast.LENGTH_LONG).show();
         }
 
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+
+        UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);
+        List<UsbSerialDriver> availableDrivers = UsbSerialProber.getDefaultProber().findAllDrivers(manager);
+        if (!availableDrivers.isEmpty()) {
+            Toast.makeText(getApplicationContext(), "USB Exist", Toast.LENGTH_LONG).show();
+
+            UsbSerialDriver driver = null;
+            UsbDeviceConnection connection = null;
+            try {
+                driver = availableDrivers.get(0);
+                if (!manager.hasPermission(driver.getDevice())) {
+
+                    Toast.makeText(getApplicationContext(), "NO Permission", Toast.LENGTH_LONG).show();
+                    //Request USB HOST
+                    // You probably need to call UsbManager.requestPermission(driver.getDevice(), ..)
+                    if (!manager.hasPermission(driver.getDevice())) {
+
+                        PendingIntent mPermissionIntent;
+                        mPermissionIntent = PendingIntent.getBroadcast(MainActivity.this, 0,
+                                new Intent(ACTION_USB_PERMISSION), PendingIntent.FLAG_ONE_SHOT);
+//
+
+                        usbReceiver = new BroadcastReceiver() {
+                            @Override
+                            public void onReceive(Context context, Intent intent) {
+                                String action = intent.getAction();
+                                if (ACTION_USB_PERMISSION.equals(action)) {
+
+                                    if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, true)) {
+                                        Toast.makeText(getApplicationContext(), "Pemission Granted", Toast.LENGTH_LONG).show();
+                                        goService();
+                                    } else {
+                                        Toast.makeText(getApplicationContext(), "Pemission Denied", Toast.LENGTH_LONG).show();
+                                    }
+                                }
 
                             }
+                        };
+
+                        registerReceiver(usbReceiver, new IntentFilter(ACTION_USB_PERMISSION));
+                        manager.requestPermission(driver.getDevice(), mPermissionIntent);
+
+
+                    }
+                } else {
+                    Toast.makeText(getApplicationContext(), "Has Permission", Toast.LENGTH_LONG).show();
+                    connection = manager.openDevice(driver.getDevice());
+                    if (connection == null) {
+                        Toast.makeText(getApplicationContext(), "Unknown error", Toast.LENGTH_LONG).show();
+                    } else {
+                        UsbSerialPort sPort = null;
+                        sPort = driver.getPorts().get(0);
+                        sPort.open(connection);
+                        Toast.makeText(getApplicationContext(), "Serial Count:" + String.valueOf(driver.getPorts().size()), Toast.LENGTH_LONG).show();
+
+                        sPort.close();
+                        sPort = null;
+
+
+                        goService();
+                    }
+                }
+            } catch (Exception e) {
+                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
+            }
+        } else {
+            Toast.makeText(getApplicationContext(), "NO USB", Toast.LENGTH_LONG).show();
+        }
+    }
+
 
     @Override
     protected void onDestroy() {
@@ -38,6 +124,9 @@ public class MainActivity extends AppCompatActivity {
             stopService(serviceIntent);
             serviceIntent = null;
         }
+        if (usbReceiver != null) {
+            unregisterReceiver(usbReceiver);
+        }
     }
 
 }

app/src/main/java/com/flywithu/carnav/MusicTitle.java

@@ -0,0 +1,74 @@
+package com.flywithu.carnav;
+
+public class MusicTitle {
+
+    private String artist = null;
+    private String album = null;
+    private String track = null;
+    private boolean isRunning = false;
+    private int total = 0;
+    private int position = 0;
+
+
+    public String getAlbum() {
+        if(album == null)
+        {
+            album = "getAlbum";
+        }
+        return album;
+    }
+
+    public void setAlbum(String album) {
+        this.album = album;
+    }
+
+    public String getTrack() {
+        if(track == null)
+        {
+            track = "getTrack";
+        }
+        return track;
+    }
+
+    public void setTrack(String track) {
+        this.track = track;
+    }
+
+    public boolean isRunning() {
+        return isRunning;
+    }
+
+    public void setRunning(boolean running) {
+        isRunning = running;
+    }
+
+    public int getTotal() {
+        return 100;
+    }
+
+    //public void setTotal(int total) {
+   //     this.total = total;
+    //}
+
+    public int getPosition() {
+        return position;
+    }
+
+    public void setPosition(int position) {
+        this.position = position;
+    }
+
+
+
+    public String getArtist() {
+        if(artist == null)
+        {
+            artist = "getArtist";
+        }
+        return artist;
+    }
+
+    public void setArtist(String artist) {
+        this.artist = artist;
+    }
+}

app/src/main/java/com/flywithu/carnav/RealService.java

@@ -2,9 +2,6 @@ package com.flywithu.carnav;
 
 import android.app.AlarmManager;
 import android.app.Application;
-import android.app.Notification;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.BroadcastReceiver;
@@ -13,22 +10,19 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.hardware.usb.UsbDeviceConnection;
 import android.hardware.usb.UsbManager;
-import android.media.RingtoneManager;
-import android.net.Uri;
-import android.os.Build;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
-
 import android.util.Log;
 import android.widget.Toast;
 
-import androidx.core.app.NotificationCompat;
-
 import com.hoho.android.usbserial.driver.UsbSerialDriver;
 import com.hoho.android.usbserial.driver.UsbSerialPort;
 import com.hoho.android.usbserial.driver.UsbSerialProber;
 
 import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.charset.Charset;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
@@ -39,25 +33,100 @@ public class RealService extends Service {
     public static Intent serviceIntent = null;
 
     private static UsbSerialPort sPort = null;
+    private MusicTitle currentSong = new MusicTitle();
+    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
 
+        @Override
+        public void onReceive(Context context, Intent intent) {
+
+
+            Bundle bundle = intent.getExtras();
+            if (bundle != null) {
+                for (String key : bundle.keySet()) {
+                    Object value = bundle.get(key);
+                    Log.d("MUSIC", String.format("%s %s (%s)", key,
+                            value.toString(), value.getClass().getName()));
+                }
+            }
+
+            String action = intent.getAction();
+            String cmd = intent.getStringExtra("command");
+            Log.v("MUSIC ", action + " / " + cmd);
+            String artist = intent.getStringExtra("artist");
+            String album = intent.getStringExtra("album");
+            String track = intent.getStringExtra("track");
+            Long myPosition = intent.getLongExtra("id", 1);
+            Log.v("MUSIC", artist + ":" + album + ":" + track);
+            boolean isRunning = intent.getBooleanExtra("playstate", false) | intent.getBooleanExtra("playing", false);
+
+            currentSong.setRunning(isRunning);
+
+            if (isRunning == true) {
+                currentSong.setAlbum(album);
+                currentSong.setArtist(artist);
+                currentSong.setTrack(track);
+                currentSong.setPosition(myPosition.intValue());
+            }
+
+        }
+    };
 
     public RealService() {
     }
 
+    private void sendSerial(String str) {
+
+        sendSerial(str, Charset.forName("UTF-8"));
+    }
+
+    private synchronized void sendSerial(String str, Charset enc) {
+
+        if (sPort != null) {
+            try {
+
+                int len = sPort.write(getStringToByte(str, enc), 3000);
+                sPort.write(new byte[]{0xd}, 3000);
+                Log.d("TAG", str);
+            } catch (Exception e) {
+                showToast(getApplication(), "Error:" + e.toString());
+            }
+
+        } else {
+            showToast(getApplication(), "SERIAL NULL");
+        }
+
+
+    }
+
+    protected byte[] getStringToByte(String str, Charset enc) {
+        ByteBuffer buf = ByteBuffer.allocate(150);
+
+        String[] arrStr = null;
+        if (str.startsWith("U4PL13") || str.startsWith("U4PL23") || str.startsWith("U4PL33")) {
+            arrStr = str.split("\\|");
+            buf.put(arrStr[0].getBytes(Charset.forName("UTF-8")));
+            buf.put(new byte[]{0x7c});
+            buf.put(arrStr[1].getBytes(enc));
+            buf.put(new byte[]{0x7c});
+
+        } else {
+            buf.put(str.getBytes(Charset.forName("UTF-8")));
+        }
+
+
+        byte[] bytes = new byte[buf.position()];
+        buf.flip();
+        buf.get(bytes);
+
+
+        return bytes;
+    }
+
     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
         serviceIntent = intent;
         showToast(getApplication(), "Start Service");
 
-//
-//        mainThread = new Thread(new Runnable() {
-//            @Override
-//            public void run() {
-
-
-
-
-
         UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);
         List<UsbSerialDriver> availableDrivers = UsbSerialProber.getDefaultProber().findAllDrivers(manager);
         if (availableDrivers.isEmpty()) {
@@ -65,27 +134,29 @@ public class RealService extends Service {
             return START_NOT_STICKY;
         }
 
-// Open a connection to the first available driver.
         UsbSerialDriver driver = null;
         UsbDeviceConnection connection = null;
         try {
             driver = availableDrivers.get(0);
+
             connection = manager.openDevice(driver.getDevice());
             if (connection == null) {
                 showToast(getApplication(), "No connection");
-                        // You probably need to call UsbManager.requestPermission(driver.getDevice(), ..)
                 return START_NOT_STICKY;
+
             }
-                }
-                catch(Exception e)
-                {
+            sPort = driver.getPorts().get(0);
+
+
+        } catch (Exception e) {
             showToast(getApplication(), e.toString());
+            return START_NOT_STICKY;
         }
 
         try {
-                    sPort.open(connection);
-                    sPort.setParameters(115200, 8, UsbSerialPort.STOPBITS_1, UsbSerialPort.PARITY_NONE);
 
+            sPort.open(connection);
+            sPort.setParameters(19200, 8, UsbSerialPort.STOPBITS_1, UsbSerialPort.PARITY_NONE);
 
 
         } catch (IOException e) {
@@ -96,38 +167,20 @@ public class RealService extends Service {
                 // Ignore.
             }
             sPort = null;
+            return START_NOT_STICKY;
         }
-                //set the time
 
 
-//                try {
-//                    sPort.write("zxcv".getBytes(), 50);
-//                }
-//                catch(Exception e)
-//                {
-//
-//                }
-//                SimpleDateFormat sdf = new SimpleDateFormat("aa hh:mm");
-//                boolean run = true;
-//                while (run) {
-//                    try {
-//                        Thread.sleep(1000 * 60 * 1); // 1 minute
-//                        Date date = new Date();
-//                        //showToast(getApplication(), sdf.format(date));
-//                        sendNotification(sdf.format(date));
-//                    } catch (InterruptedException e) {
-//                        run = false;
-//                        e.printStackTrace();
-//                    }
-//                }
-//            }
-//        });
-//        mainThread.start();
+        SimpleDateFormat format1 = new SimpleDateFormat("00yyMMddHHmm");
+        //   String f = format1.format(System.currentTimeMillis());
+        String currentInfo = format1.format(new Date());
+        String currentTime = String.format("TMST%s", currentInfo);
+        sendSerial(currentTime);
+        sendSerial("U4EN00");
+
         IntentFilter iF = new IntentFilter();
         iF.addAction("com.android.music.metachanged");
-
         iF.addAction("com.htc.music.metachanged");
-
         iF.addAction("fm.last.android.metachanged");
         iF.addAction("com.sec.android.app.music.metachanged");
         iF.addAction("com.nullsoft.winamp.metachanged");
@@ -138,8 +191,58 @@ public class RealService extends Service {
         iF.addAction("com.rdio.android.metachanged");
         iF.addAction("com.samsung.sec.android.MusicPlayer.metachanged");
         iF.addAction("com.andrew.apollo.metachanged");
+        iF.addAction("com.android.music.metachanged");
+        iF.addAction("com.android.music.playstatechanged");
+        iF.addAction("com.android.music.playbackcomplete");
+        iF.addAction("com.android.music.queuechanged");
+
 
         registerReceiver(mReceiver, iF);
+
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+
+                boolean myRun = true;
+                int stopCount = 0;
+                while (myRun) {
+                    try {
+
+
+                        Thread.sleep(5000);
+                        SimpleDateFormat format1 = new SimpleDateFormat("00yyMMddHHmm");
+                        String currentInfo = format1.format(new Date());
+                        String currentTime = String.format("TMST%s", currentInfo);
+                        sendSerial(currentTime);
+
+                        if (currentSong.isRunning()) {
+                            stopCount = 0;
+                            sendSerial("U4EN00");
+                            sendSerial("U4OP00");
+                            sendSerial("U4PL03|" + currentSong.getTotal() + "," + currentSong.getPosition() + "|0001010000000");
+                            sendSerial("U4PL13|" + currentSong.getAlbum() + "|", Charset.forName("UTF-8"));
+                            sendSerial("U4PL23|" + currentSong.getTrack() + "|", Charset.forName("UTF-8"));
+                            sendSerial("U4PL33|" + currentSong.getArtist() + "|", Charset.forName("UTF-8"));
+                        } else {
+                            if (stopCount > 5) {
+                                sendSerial("U4DI00");
+                            }
+                            stopCount++;
+                        }
+
+
+                    } catch (InterruptedException e) {
+                        myRun = false;
+
+                    }
+                }
+
+            }
+
+        }).start();
+
+
         return START_NOT_STICKY;
     }
 
@@ -149,19 +252,15 @@ public class RealService extends Service {
         try {
             sPort.close();
             sPort = null;
-        }
-        catch(Exception e)
-        {
-
+        } catch (Exception e) {
+            showToast(getApplication(), "stop Error");
         }
         serviceIntent = null;
         setAlarmTimer();
         Thread.currentThread().interrupt();
+        unregisterReceiver(mReceiver);
+        showToast(getApplication(), "stop Service");
 
-//        if (mainThread != null) {
-//            mainThread.interrupt();
-//            mainThread = null;
-//        }
     }
 
     @Override
@@ -184,7 +283,7 @@ public class RealService extends Service {
         h.post(new Runnable() {
             @Override
             public void run() {
-                Toast.makeText(application, msg, Toast.LENGTH_LONG).show();
+                Toast.makeText(application, msg, Toast.LENGTH_SHORT).show();
             }
         });
     }
@@ -193,7 +292,7 @@ public class RealService extends Service {
         final Calendar c = Calendar.getInstance();
         c.setTimeInMillis(System.currentTimeMillis());
         c.add(Calendar.SECOND, 1);
-        Intent intent = new Intent(this, AlarmRecever.class);
+        Intent intent = new Intent(this, AlarmReceiver.class);
         PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
 
         AlarmManager mAlarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
@@ -201,62 +300,4 @@ public class RealService extends Service {
     }
 
 
-
-    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            try {
-                if (sPort != null)
-                {
-                    sPort.write("abc".getBytes(), 3000);
-                }
-            }
-
-            catch(Exception e)
-            {
-                e.toString();
-            }
-            String action = intent.getAction();
-            String cmd = intent.getStringExtra("command");
-            Log.v("tag ", action + " / " + cmd);
-            String artist = intent.getStringExtra("artist");
-            String album = intent.getStringExtra("album");
-            String track = intent.getStringExtra("track");
-            Log.v("tag", artist + ":" + album + ":" + track);
-
-
-
-        //    Toast.makeText(MainActivity.this, track, Toast.LENGTH_SHORT).show();
-        }
-    };
-
-
-//    private void sendNotification(String messageBody) {
-//        Intent intent = new Intent(this, MainActivity.class);
-//        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-//        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
-//
-//        String channelId = "fcm_default_channel";//getString(R.string.default_notification_channel_id);
-//        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
-//        NotificationCompat.Builder notificationBuilder =
-//                new NotificationCompat.Builder(this, channelId)
-//                        .setSmallIcon(R.mipmap.ic_launcher)//drawable.splash)
-//                        .setContentTitle("Service test")
-//                        .setContentText(messageBody)
-//                        .setAutoCancel(true)
-//                        .setSound(defaultSoundUri)
-//                        .setPriority(Notification.PRIORITY_HIGH)
-//                        .setContentIntent(pendingIntent);
-//
-//        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
-//
-//        // Since android Oreo notification channel is needed.
-//        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-//            NotificationChannel channel = new NotificationChannel(channelId,"Channel human readable title", NotificationManager.IMPORTANCE_DEFAULT);
-//            notificationManager.createNotificationChannel(channel);
-//        }
-//
-//        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
-//    }
 }

app/src/main/java/com/flywithu/carnav/RebootReceiver.java

@@ -5,9 +5,10 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
 
-public class RebootRecever extends BroadcastReceiver {
+public class RebootReceiver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
+
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             Intent in = new Intent(context, RestartService.class);
             context.startForegroundService(in);

app/src/main/java/com/flywithu/carnav/RestartService.java

@@ -9,7 +9,6 @@ import android.content.Intent;
 import android.os.Build;
 import android.os.IBinder;
 
-
 import androidx.core.app.NotificationCompat;
 
 public class RestartService extends Service {

app/src/test/java/com/flywithu/carnav/ExampleUnitTest.java

@@ -2,6 +2,12 @@ package com.flywithu.carnav;
 
 import org.junit.Test;
 
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.util.Date;
+
 import static org.junit.Assert.*;
 
 /**
@@ -14,4 +20,63 @@ public class ExampleUnitTest {
     public void addition_isCorrect() {
         assertEquals(4, 2 + 2);
     }
+
+    @Test
+    public void checkDate()
+    {
+        LocalDateTime currentDateTime = LocalDateTime.now();
+        //TMST001801140907
+        //TMST00YYDDDD0907
+
+        Date myDate = new Date ( "Sun,5 Dec 1999 00:07:21" );
+
+
+        SimpleDateFormat format1 = new SimpleDateFormat ( "yy MM dd HH mm");
+     //   String f = format1.format(System.currentTimeMillis());
+        String f = format1.format(myDate);
+        System.out.println(f);
+
+
+    }
+    private static String bytesToHex(byte[] hashInBytes) {
+
+        StringBuilder sb = new StringBuilder();
+        for (byte b : hashInBytes) {
+            sb.append(String.format("%02x", b));
+        }
+        return sb.toString();
+
+    }
+    @Test
+    public void myTest()
+    {
+        RealService rs = new RealService();
+        rs.getStringToByte("U4PL23|헤어지자 (Prod. 정키)|", Charset.forName("UTF-8"));
+    }
+
+    @Test
+    public void checkout()
+    {
+        //55 34 50 4C 33 33 7C ED 9C 98 EC 9D B8 20 28 57 68 65 65 20 49 6E 29 7C 0D
+        String test = "오";
+        //EC A7 80 EC 96 B4 EB B0 98
+
+        //오
+        //오
+        //        ec98a4
+        //feffc624
+        //0000c624
+        System.out.println(test);
+        try {
+            System.out.println(bytesToHex(test.getBytes("utf-8")));
+            System.out.println(bytesToHex(test.getBytes("utf-16")));
+            System.out.println(bytesToHex(test.getBytes("utf-32")));
+            System.out.println(new String(new byte[]{0x0,(byte)0xec,0x0,(byte)0x98,0x0,(byte)0xa4}, StandardCharsets.UTF_16));
+        }
+        catch(Exception e)
+        {
+            e.printStackTrace();
+        }
+
+    }
 }