Stop decrementing to negative values when the value of a variable becomes zero
<p>This below code has Two values increment and decrement which are hooked to buttons in XML</p>

<pre><code>int quantity = 0;;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_trial_order);
}

public void increment(View view){
   quantity = quantity + 1;
    display(quantity);
}
public void decrement(View view){
    quantity = quantity - 1;
    display(quantity);
}
</code></pre>

<p>and increment works fine,decrement works fine too but when I press decrement it goes in 0,-1,-2,-3 and so on but I want 0 to be the final value when I use decrement button kindly help</p>