Adapter Pattern - Example : Adapter Pattern « Design Pattern « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JDK 6
25.JNDI LDAP
26.JPA
27.JSP
28.JSTL
29.Language Basics
30.Network Protocol
31.PDF RTF
32.Reflection
33.Regular Expressions
34.Scripting
35.Security
36.Servlets
37.Spring
38.Swing Components
39.Swing JFC
40.SWT JFace Eclipse
41.Threads
42.Tiny Application
43.Velocity
44.Web Services SOA
45.XML
Java » Design Pattern » Adapter PatternScreenshots 
Adapter Pattern - Example

/*

Software Architecture Design Patterns in Java
by Partha Kuchana 

Auerbach Publications

*/


import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import com.sun.java.swing.plaf.windows.WindowsLookAndFeel;

public class AddressManager extends JFrame {
  public static final String newline = "\n";

  public static final String VALIDATE = "Validate";

  public static final String EXIT = "Exit";

  private JTextField txtCustomerName, txtAddress, txtZip, txtState;

  private JLabel lblCustomerName, lblAddress;

  private JLabel lblZip, lblState, lblType;

  private JComboBox cmbAddressType;

  private JLabel lblResult, lblResultValue;

  public AddressManager() {
    super(" Adapter Pattern - Example ");

    txtCustomerName = new JTextField(20);
    txtAddress = new JTextField(20);
    txtZip = new JTextField(10);
    txtState = new JTextField(10);

    cmbAddressType = new JComboBox();
    cmbAddressType.addItem(Customer.US);
    cmbAddressType.addItem(Customer.CANADA);

    lblCustomerName = new JLabel("Customer Name:");
    lblAddress = new JLabel("Address:");
    lblZip = new JLabel("Zip/PostalCode:");
    lblState = new JLabel("State/Province:");
    lblType = new JLabel("Address Type:");
    lblResult = new JLabel("Result:");
    lblResultValue = new JLabel("Click the Validate Button");

    //Create the open button
    JButton validateButton = new JButton(AddressManager.VALIDATE);
    validateButton.setMnemonic(KeyEvent.VK_V);
    JButton exitButton = new JButton(AddressManager.EXIT);
    exitButton.setMnemonic(KeyEvent.VK_X);
    ButtonHandler objButtonHandler = new ButtonHandler(this);

    validateButton.addActionListener(objButtonHandler);
    exitButton.addActionListener(new ButtonHandler());

    JPanel captionPanel = new JPanel();
    String captionText = "<html><b><font color=cc0000 size=+1>"
        "Adapter Pattern Example</font></b></html>";

    JLabel captionLabel = new JLabel(captionText);
    captionPanel.add(captionLabel);

    JPanel UIPanel = new JPanel();

    //****************************************************
    GridBagLayout gridbag = new GridBagLayout();
    UIPanel.setLayout(gridbag);
    GridBagConstraints gbc = new GridBagConstraints();

    UIPanel.add(lblCustomerName);
    UIPanel.add(txtCustomerName);
    UIPanel.add(lblAddress);
    UIPanel.add(txtAddress);
    UIPanel.add(lblZip);
    UIPanel.add(txtZip);
    UIPanel.add(lblState);
    UIPanel.add(txtState);
    UIPanel.add(lblType);
    UIPanel.add(cmbAddressType);
    UIPanel.add(lblResult);
    UIPanel.add(lblResultValue);

    UIPanel.add(validateButton);
    UIPanel.add(exitButton);

    gbc.insets.top = 5;
    gbc.insets.bottom = 5;
    gbc.insets.left = 5;
    gbc.insets.right = 5;
    gbc.anchor = GridBagConstraints.WEST;

    gbc.gridx = 0;
    gbc.gridy = 0;
    gridbag.setConstraints(lblCustomerName, gbc);
    gbc.gridx = 1;
    gbc.gridy = 0;
    gridbag.setConstraints(txtCustomerName, gbc);
    gbc.gridx = 0;
    gbc.gridy = 1;
    gridbag.setConstraints(lblAddress, gbc);
    gbc.gridx = 1;
    gbc.gridy = 1;
    gridbag.setConstraints(txtAddress, gbc);
    gbc.gridx = 0;
    gbc.gridy = 2;
    gridbag.setConstraints(lblZip, gbc);
    gbc.gridx = 1;
    gbc.gridy = 2;
    gridbag.setConstraints(txtZip, gbc);
    gbc.gridx = 0;
    gbc.gridy = 3;
    gridbag.setConstraints(lblState, gbc);
    gbc.gridx = 1;
    gbc.gridy = 3;
    gridbag.setConstraints(txtState, gbc);
    gbc.gridx = 0;
    gbc.gridy = 4;
    gridbag.setConstraints(lblType, gbc);
    gbc.gridx = 1;
    gbc.gridy = 4;
    gridbag.setConstraints(cmbAddressType, gbc);
    gbc.gridx = 0;
    gbc.gridy = 5;
    gridbag.setConstraints(lblResult, gbc);
    gbc.gridx = 1;
    gbc.gridy = 5;
    gridbag.setConstraints(lblResultValue, gbc);

    //gbc.anchor = GridBagConstraints.CENTER;
    gbc.insets.left = 2;
    gbc.insets.right = 2;
    gbc.insets.top = 40;

    JPanel buttonPanel = new JPanel();
    buttonPanel.add(validateButton);
    buttonPanel.add(exitButton);
    UIPanel.add(buttonPanel);
    gbc.gridx = 1;
    gbc.gridy = 6;
    gridbag.setConstraints(buttonPanel, gbc);

    //

    //Add the buttons and the log to the frame
    Container contentPane = getContentPane();
    contentPane.add(UIPanel, BorderLayout.CENTER);

    try {
      UIManager.setLookAndFeel(new WindowsLookAndFeel());
      SwingUtilities.updateComponentTreeUI(AddressManager.this);
    catch (Exception ex) {
      System.out.println(ex);
    }

  }

  public static void main(String[] args) {
    JFrame frame = new AddressManager();

    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });

    //frame.pack();
    frame.setSize(350300);
    frame.setVisible(true);
  }

  public String getCustomerName() {
    return txtCustomerName.getText();
  }

  public String getAddress() {
    return txtAddress.getText();
  }

  public String getZip() {
    return txtZip.getText();
  }

  public String getAddrState() {
    return txtState.getText();
  }

  public String getAddressType() {
    return (StringcmbAddressType.getSelectedItem();
  }

  public void setResultValue(String str) {
    lblResultValue.setText(str);
  }

// End of class AddressManager

class ButtonHandler implements ActionListener {
  AddressManager objAddressManager;

  public void actionPerformed(ActionEvent e) {
    String validationResult = null;

    //System.out.println(e.getActionCommand());
    if (e.getActionCommand().equals(AddressManager.EXIT)) {
      System.exit(1);
    }
    if (e.getActionCommand().equals(AddressManager.VALIDATE)) {
      String custName = objAddressManager.getCustomerName();
      String address = objAddressManager.getAddress();
      String zip = objAddressManager.getZip();
      String state = objAddressManager.getAddrState();
      String addressType = objAddressManager.getAddressType();

      //Create a customer object
      Customer objCustomer = new Customer(custName, address, zip, state,
          addressType);

      //Check if the address is valid
      if (objCustomer.isValidCustomerAddress()) {
        validationResult = "Valid customer data";
      else {
        validationResult = "Invalid customer data";
      }

      objAddressManager.setResultValue(validationResult);
    }
  }

  public ButtonHandler() {
  }

  public ButtonHandler(AddressManager inObjAddressManager) {
    objAddressManager = inObjAddressManager;
  }

// End of class ButtonHandler

class USAddress extends AddressValidator {

  public boolean isValidAddress(String inp_address, String inp_zip,
      String inp_state) {

    if (inp_address.trim().length() 10)
      return false;
    if (inp_zip.trim().length() 5)
      return false;
    if (inp_zip.trim().length() 10)
      return false;
    if (inp_state.trim().length() != 2)
      return false;

    return true;
  }
}// end of class

class Customer {
  public static final String US = "US";

  public static final String CANADA = "Canada";

  private String address;

  private String name;

  private String zip, state, type;

  public boolean isValidCustomerAddress() {
    if (type.equals(Customer.US)) {
      USAddress us = new USAddress();
      return us.isValidAddress(address, zip, state);
    }
    if (type.equals(Customer.CANADA)) {
      CAAddress objCAAddress = new CAAddress();
      CAAddressAdapter adapter = new CAAddressAdapter(objCAAddress);
      return adapter.isValidAddress(address, zip, state);
    }
    return true;
  }

  public Customer(String inp_name, String inp_address, String inp_zip,
      String inp_state, String inp_type) {

    name = inp_name;
    address = inp_address;
    zip = inp_zip;
    state = inp_state;
    type = inp_type;
  }
}// end of class

class CAAddressAdapter extends AddressValidator {

  private CAAddress objCAAddress;

  public CAAddressAdapter(CAAddress address) {
    objCAAddress = address;
  }

  public boolean isValidAddress(String inp_address, String inp_zip,
      String inp_state) {

    return objCAAddress
        .isValidCanadianAddr(inp_address, inp_zip, inp_state);
  }
}// end of class

class CAAddress {

  public boolean isValidCanadianAddr(String inp_address, String inp_pcode,
      String inp_prvnc) {

    if (inp_address.trim().length() 15)
      return false;
    if (inp_pcode.trim().length() != 6)
      return false;
    if (inp_prvnc.trim().length() 6)
      return false;

    return true;
  }
}// end of class

abstract class AddressValidator {
  public abstract boolean isValidAddress(String inp_address, String inp_zip,
      String inp_state);
}// end of class



           
       
Related examples in the same category
1.Adapter Pattern in Java 2
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.