Android AlertDialog

mAlert =  new AlertDialog.Builder(this);
mAlert.setTitle("Hint");
mAlert.setMessage("Connection Error");
    
DialogInterface.OnClickListener OnClick = new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        finish();
    }
};
    
mAlert.setNeutralButton("OK", OnClick);
mAlert.show();