share.java

this is a trade sale system realized by java. It can run some easy functions and has a good design p

/**
 * @author  Asok Perumainar
 * @version 
 * Created on May 28, 2001
 */
package trader;
import java.io.Serializable;
public class Share implements Serializable{
  private Stock stock;
  private int quantity;

  // Share constructor
  public Share (Stock stock, int quantity){
    this.stock = stock;
    this.quantity = quantity;
  }

  public Share(Stock stock) {
    this (stock, 0);
  }

  // methods  
  public double calculateValue(){
    return quantity * stock.getPrice();
  }
  
  public int hashCode() {
    return stock.getSymbol().hashCode();
  }

  public boolean equals(Object anObject) {
    Share sr = (Share) anObject;
    return sr.stock.getSymbol().equals(this.stock.getSymbol())
      && sr.quantity == this.quantity;
  }

  // Accessor methods
  public Stock getStock() {
    return stock;
  }

  public int getQuantity () {
    return quantity;
  }
  // Mutator methods 
  public void setStock (Stock newStock) {
    stock = newStock;
  }

  public void setQuantity (int newQuantity) {
    quantity = newQuantity;
  }

  public String toString() {
     return "Share:  " + stock.getSymbol() + "  " + quantity;
  }
}