How do I display an alert dialog on Android?

Question

I want to display a dialog/popup window with a message to the user that shows \"Are you sure you want to delete this entry?\" with one button that says \'Delete\'. When

Answer 1

AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("This is Title");
    builder.setMessage("This is message for Alert Dialog");
    builder.setPositiveButton("Positive Button", (dialog, which) -> onBackPressed());
    builder.setNegativeButton("Negative Button", (dialog, which) -> dialog.cancel());
    builder.show();

This is a way which alike to create the Alert dialog with some line of code.