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class Currency {
  // total amount requested (required)
  private final int dollars;
  private final int cents;
  // change requested, denomination (optional)
  private final int quarters;
  private final int dimes;
  private final int nickels;
  private final int pennies;
  
  // Static class member 
  private Currency(Builder builder) {
    dollars = builder.dollars;
    cents = builder.cents;
   
    quarters = builder.quarters;
    dimes = builder.dimes;
    nickels = builder.nickels;
    pennies = builder.pennies;
  }

  // Static class member 
  public static class Builder {
    private final int dollars;
    private final int cents;
    private int quarters = 0;
    private int dimes = 0;
    private int nickels = 0;
    private int pennies = 0;
	 
    public Builder(int dollars, int cents) {
      this.dollars = dollars;
      this.cents = cents;
    }
    public Builder quarters(int quantity) {
      quarters = quantity;  
      return this; 
    }
    public Builder dimes(int quantity) {
      dimes = quantity; 
      return this;	 
    }
    public Builder nickles(int quantity) {
      nickels = quantity; 
      return this;	 
    }
    public Builder pennies(int quantity) {
      pennies = quantity; 
      return this;	 
    }
    public Currency build() {
      return new Currency(this); 	 
    }
  }
}

// Client code:
Currency USD = new Currency.Builder(10010,5650).quarters(2).nickles(1).pennies(142).build();