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| Adapter设计模式范例 | ||||
| 作者：佚名 数据库来源：不详 点击数： 更新时间：2008-6-27 | ||||
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(350, 300); 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 (String) cmbAddressType.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
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