Hello Java8

Lambda expressionsを試してみました。
...
findViewById(R.id.button).setOnClickListener(this::showToast);
}

private void showToast(View view) {
Toast.makeText(view.getContext(), "Java 8 Language Features Lambda expressions", Toast.LENGTH_LONG).show();
}

I tried Lambda expressions.
  ...
  findViewById (R.id.button) .setOnClickListener (this :: showToast);
}

private void showToast (View view) {
        Toast.makeText (view.getContext (), "Java 8 Language Features Lambda expressions", Toast.LENGTH_LONG) .show ();
    }