product.java

CMU Java课程设计

import  java.awt.*;

import  javax.swing.*;


//import Product.ProductPanel.Constraint;

/**
 * This class models a product sold by the Gourmet Coffee store.
 * It contains the following information:
 * <ol>
 * <li>the code of the product, a <code>String</code></li>
 * <li>a short description of the product, a <code>String</code></li>
 * <li>the price of the product, a <code>double</code></li>
 * </ol>
 *
 * @author author name
 * @version  1.0.0
 */
public class Product {

	/* Code of the product. */
	private String  code;

	/* Description of the product. */
	private String  description;

	/* Price of the product. */
	private double  price;

	/**
	 * Constructs a <code>Product</code> object.
	 *
	 * @param initialCode  the code of the product.
	 * @param initialDescription  the description of the product.
	 * @param initialPrice  the price of the product.
	 */
	public Product(String initialCode, String initialDescription,
	               double initialPrice)  {

		code = initialCode;
		description = initialDescription;
		price = initialPrice;
	}

	/**
	 * Returns the code of this product.
	 *
	 * @return  the code of this product.
	 */
	public String  getCode()  {

		return  code;
	}

	/**
	 * Returns the description of this product.
	 *
	 * @return  the descripton of this product.
	 */
	public String  getDescription()  {

		return  description;
	}

	/**
	 * Returns the price of this product.
	 *
	 * @return  price of this product.
	 */
	public double  getPrice()  {

		return  price;
	}

	/**
	 * Returns <code>true</code> if code of this product is
	 * equal to code of the argument.
	 * </p>
	 *
	 * @param object  object with which this product is compared.
	 * @return  <code>true</code> if code of this product is
	 *          equal to code of the argument; <code>false</code> otherwise.
	 */
	public boolean  equals(Object  object)  {

		return object instanceof Product
		       && getCode().equals(((Product) object).getCode());
	}

	/**
	 * Returns the string representation of this product.
	 *
	 * @return  the string representation of this product.
	 */
	public String  toString()  {

		return  getCode() + "_" + getDescription() + "_" + getPrice();
	}

	/**
	 * Obtains a {@link JPanel} object with the information of this product.
	 *
	 * @return a <code>JPanel</code> with the information of this product.
	 */
	public JPanel getPanel() {

		/* PLACE YOUR CODE HERE */

		return new ProductPanel(); // REMOVE; USED SO THIS FILE COMPILES
	}

public class ProductPanel extends JPanel
{
	public ProductPanel()
	{

		GridBagLayout grid = new GridBagLayout();
		setLayout(grid);
        AddRow("code       :",code);
        AddRow("description:",description);
        AddRow("price      :",Double.toString(price));
	
/*		JLabel labelCode = new JLabel("code :");
		JTextField textFieldCode = new JTextField(code, 18);
		JLabel labeldescription = new JLabel("description :");
        JTextField textFielddescription = new JTextField(description, 18);
		JLabel labelprice  = new JLabel("price  :");
        JTextField textFieldprice = new JTextField(Double.toString(price) , 18);
        // Define the text aligment
        textFieldCode.setHorizontalAlignment(JTextField.CENTER);
        textFielddescription.setHorizontalAlignment(JTextField.CENTER);
        textFieldprice.setHorizontalAlignment(JTextField.CENTER);
        // Make the text field un-editable
        textFieldCode.setEditable(false);
        textFielddescription.setEditable(false);
        textFieldprice.setEditable(false);
        JPanel panelCode = new JPanel();
        panelCode.add(labelCode);
        panelCode.add(textFieldCode);
        add(panelCode);
        JPanel paneldescription = new JPanel();
        paneldescription.add(labeldescription);
        paneldescription.add(textFielddescription);
        add(paneldescription);
        JPanel panelprice = new JPanel();
        panelprice.add(labelprice);
        panelprice.add(textFieldprice);
        add(panelprice);*/
	}
	public void AddRow(String name, String value)
	{
		JLabel label = new JLabel(name);
		JTextField textField = new JTextField(value, 15);
        textField.setEditable(false);
        add(label,new Constraint(0));
        add(textField, new Constraint(1));
        row++;
	}
	
	class Constraint extends GridBagConstraints
	{
		public Constraint(int col)
		{
			this.gridx = col;
			this.gridy = row;
			weightx = 100;
			weighty = 100;
			anchor = GridBagConstraints.WEST;
		}
	}
	
	private int row = 0;
}

}