New method in MainActivity.java

/**
 * This method displays the given price on the screen.
 */
private void displayPrice(int number) {
       TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
       priceTextView.setText(NumberFormat.getCurrencyInstance().format(number));
}

can some one help me

TIP:
The currency used is the one your phone uses, not what is set on your computer. Some phones don't allow you to change the currency explicitly, but your selected language on the phone dictates this, for example choosing English (United Kingdom) will automatically set the currency to "£" (Pounds).
On a Samsung phone in most cases this can be set under Options->Controls->Language and Input

Thnx Buddy!!! It Resolves my problem.

please help !

@chekwon78 Do try adding a TextView in activity_main.xml and assign it an id like this android:id="@+id/price_text_view".

Thanks soo much ,it worked for me

Hello,
Need your help to solve the numberFormat error after adding the "Add unambiguous imports on the fly"

It's ok, solved by adding "import java.text.NumberFormat;" . thanks.

error: invalid method declaration; return type required
} displayPrice(2*5);
^

don't why my app is crashing after clicking on the ORDER button

How do I resolve this error?

Code of [chetan081] approach

private void displayPrice(int number) {
TextView priceTextView = (TextView) findViewById(R.id.price);
priceTextView.setText("₹ "+ number);
}

How do i resolve this error

After latest update of Android studio it should be this code in Kotlin:

/**
* This method displays the given price on the screen.
*/
private fun displayPrice(number: Int) {
val priceTextView = findViewById(com.example.justjava.R.id.price_text_view) as TextView
priceTextView.setText(java.text.NumberFormat.getCurrencyInstance().format(number))
}