the NumberFormat object is created once when the program starts.

      

import java.text.NumberFormat;

public class MainClass {

  static NumberFormat cf = NumberFormat.getCurrencyInstance();

  public static void main(String[] args) {
    printMyAllowance();
    printCostOfPaintBallGun();
  }

  public static void printMyAllowance() {
    double myAllowance = 5.00;
    cf = NumberFormat.getCurrencyInstance();
    System.out.println("My allowance: " + cf.format(myAllowance));
  }

  public static void printCostOfPaintBallGun() {
    double costOfPaintBallGun = 69.95;
    cf = NumberFormat.getCurrencyInstance();
    System.out.println("Cost of Paint Ball Gun: " + cf.format(costOfPaintBallGun));
  }
}

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the NumberFormat object is created once when the program starts. : Number Format « Data Type « Java

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