NumberFormat is abstract?

[DrKush]

Hi yes, I am trying to format some numbers in java program but i get error message

Documents\Java\PHotel.java:42: java.text.NumberFormat is abstract; cannot be instantiated
NumberFormat nf = new NumberFormat();
^
1 error

Tool completed with exit code 1

does anyone know whats going on here?

[hardwired]

Yes. Look at the Methods Summary sexction of the NumberFormat class api. It contains some static methods for obtaining instances of NumberFormat, eg,

NumberFormat nf = NumberFormat.getInstance();

[DrKush]

I have NumberFormat nf = new NumberFormat();
when I put NumberFormat nf = new NumberFormat.get Instance();
i get error message

Documents\Java\PHotel.java:17: cannot find symbol
symbol : class getInstance
location: class java.text.NumberFormat
NumberFormat nf = new NumberFormat.getInstance();
^
1 error

CODE:

import java.util.*;
import java.io.*;
import java.text.*;
public class PHotel
{
public static void main(String[]args) throws InputMismatchException
{
int totalFloors;
int numOfRooms;
int roomsOccupied;
int roomsVacant;
double occupancyRate;


NumberFormat nf = new NumberFormat();


//Occupancy rate = number of rooms occupied/total number of rooms//
System.out.println("How many floors are in the hotel?");
Scanner keyboard = new Scanner(System.in);
totalFloors = keyboard.nextInt();

for(int i = 0; i!=totalFloors;i++)
{
if(totalFloors<=1)
System.out.println("The building must have more then 1 floor.");
if(totalFloors>1)
System.out.println("How many rooms are on floor "+i+"?");
numOfRooms = keyboard.nextInt();

if(numOfRooms>=10)
{
System.out.println("How many rooms on floor "+i+" are occupied?");
roomsOccupied = keyboard.nextInt();



}
else
System.out.println("Each floor must have at least 10 rooms.");

}

System.out.println("Rooms in the hotel: "+numOfRooms);
System.out.println("Rooms occupied: "+roomsOccupied);
System.out.println("Rooms vacant: "+roomsVacant);
System.out.println("occupancy rate:"+occupancyRate);
}//end main
}//end class

[hardwired]

I copied, pasted and compiled the code you posted above and got this:

C:\jexp>javac PHotelRx.java
PHotelRx.java:16: java.text.NumberFormat is abstract; cannot be instantiated
        NumberFormat nf = new NumberFormat();
                          ^
1 error

Change this line

        NumberFormat nf = new NumberFormat();

to this

        NumberFormat nf = NumberFormat.getInstance();

Then give initial values, eg, 0, to the five variables declared at the beginning of the main method.

[DrKush]

xcellent, ty