how to open camera using camera intent in android

private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;

private Uri fileUri;


// CAPTURE IMAGE intent
   Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
   fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
   intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
   startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);

//CAPTURE VIDEO Intent
  Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
  fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO);
  intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
  intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
  startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
         
            Toast.makeText(this, "Image saved to:\n" +
                     data.getData(), Toast.LENGTH_LONG).show();
        } else if (resultCode == RESULT_CANCELED) {
          
        } else {
           
        }
    }

    if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
          
            Toast.makeText(this, "Video saved to:\n" +
                     data.getData(), Toast.LENGTH_LONG).show();
        } else if (resultCode == RESULT_CANCELED) {
           
        } else {
         
        }
    }
}

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera" android:required="false" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />