java语音api汽车还贷程序

// Exercise 28.16: CarPayment.java // Calculate different billing plans for a car loan. import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.text.DecimalFormat; import java.util.*; import javax.speech.*; import javax.speech.synthesis.*; public class CarPayment extends JFrame { /** * */ private static final long serialVersionUID = 4067748494903359401L; // JLabel and JTextfield for price private JLabel priceJLabel; private JTextField priceJTextField; // JLabel and JTextfield for down payment private JLabel downPaymentJLabel; private JTextField downPaymentJTextField; // JLabel and JTextfield for interest private JLabel interestJLabel; private JTextField interestJTextField; // JButton for instructions private JButton instructionsJButton; // JButton to initiate calculation private JButton calculateJButton; // JTextArea to display results private JTextArea paymentsJTextArea; //创建一个Synthesizer对象 private Synthesizer speechSynthesizer; // no-argument constructor public CarPayment() { try { //为FreeTTS合成器创建一个SynthesizerModeDesc SynthesizerModeDesc descriptor=new SynthesizerModeDesc( "Unlimited domain FreeTTS Speech Synthesizer from Sun Labs",null,Locale.US,Boolean.FALSE,null); //创建一个Synthesizer对象 speechSynthesizer =Central.createSynthesizer(descriptor); if(speechSynthesizer!=null) { //准备一个作为朗读的合成器 speechSynthesizer.allocate(); speechSynthesizer.resume(); //取得合成器的属性 SynthesizerProperties properties= speechSynthesizer.getSynthesizerProperties(); //设置语音合成器的朗读语速 properties.setSpeakingRate(100.0f); }//end if else { System.err.println("Synthesizer creation failed."); System.exit(1); } }//end try catch(Exception myException) { myException.printStackTrace(); } createUserInterface(); // set up GUI } // create and position GUI components; register event handlers private void createUserInterface() { // get content pane for attaching GUI components Container contentPane = getContentPane(); // enable explicit positioning of GUI components contentPane.setLayout( null ); // set up priceJLabel priceJLabel = new JLabel(); priceJLabel.setBounds( 40, 24, 80, 21 ); priceJLabel.setText( "Price:" ); contentPane.add( priceJLabel ); // set up priceJTextField priceJTextField = new JTextField(); priceJTextField.setBounds( 184, 24, 56, 21 ); priceJTextField.setHorizontalAlignment( JTextField.RIGHT ); contentPane.add( priceJTextField ); // set up downPaymentJLabel downPaymentJLabel = new JLabel(); downPaymentJLabel.setBounds( 40, 56, 96, 21 ); downPaymentJLabel.setText( "Down payment:" ); contentPane.add( downPaymentJLabel ); // set up downPaymentJTextField downPaymentJTextField = new JTextField(); downPaymentJTextField.setBounds( 184, 56, 56, 21 ); downPaymentJTextField.setHorizontalAlignment( JTextField.RIGHT ); contentPane.add( downPaymentJTextField ); // set up interestJLabel interestJLabel = new JLabel(); interestJLabel.setBounds( 40, 88, 120, 21 ); interestJLabel.setText( "Annual interest rate:" ); contentPane.add( interestJLabel ); // set up interestJTextField interestJTextField = new JTextField(); interestJTextField.setBounds( 184, 88, 56, 21 ); interestJTextField.setHorizontalAlignment( JTextField.RIGHT ); contentPane.add( interestJTextField ); // set up instructionsJButton and register its event handler instructionsJButton = new JButton(); instructionsJButton.setBounds( 40, 128, 110, 24 ); instructionsJButton.setText( "Instructions" ); contentPane.add( instructionsJButton ); instructionsJButton.addActionListener( new ActionListener() // anonymous inner class { // event handler called when instructionsJButton // is clicked public void actionPerformed( ActionEvent event ) { instructionsJButtonActionPerformed( event ); } } // end anonymous inner class ); // end call to addActionListener // set up calculateJButton and register its event handler calculateJButton = new JButton(); calculateJButton.setBounds( 155, 128, 90, 24 ); calculateJButton.setText( "Calculate" ); contentPane.add( calculateJButton ); calculateJButton.addActionListener( new ActionListener() // anonymous inner class { // event handler called when calculateJButton is clicked public void actionPerformed( ActionEvent event ) { calculateJButtonActionPerformed( event ); } } // end anonymous inner class ); // end call to addActionListener // set up paymentsJTextArea paymentsJTextArea = new JTextArea(); paymentsJTextArea.setBounds( 28, 168, 232, 90 ); paymentsJTextArea.setEditable( false ); contentPane.add( paymentsJTextArea ); // set properties of application's window setTitle( "Car Payment Calculator" ); // set title bar string setSize( 288, 302 ); // set window's size setVisible( true ); // display window // ensure synthesizer is cleaned up // when user closes application addWindowListener( new WindowAdapter() // anonymous inner class { public void windowClosing( WindowEvent event ) { frameWindowClosing( event ); } } // end anonymous inner class ); // end addWindowListener } // end method createUserInterface // method called when user clicks instructionsJButton private void instructionsJButtonActionPerformed( ActionEvent event ) { String Elucidation="Please enter price ,down payment and annual interest rate"; //说明文本 speechSynthesizer.speakPlainText(Elucidation, null); //朗读说明 } // end method instructionsJButtonActionPerformed // method called when user clicks calculateJButton private void calculateJButtonActionPerformed( ActionEvent event ) { int years = 2; // repetition counter int months; // payment period double monthlyPayment; // monthly payment String textToSpeek="You Will Hava to Pay:\n";//显示输出结果时使用 // clear JTextArea paymentsJTextArea.setText(""); // add header JTextArea paymentsJTextArea.append( "Months\tMonthly Payments" ); // retrieve user input int price = Integer.parseInt( priceJTextField.getText() ); int downPayment = Integer.parseInt( downPaymentJTextField.getText() ); double interest = Double.parseDouble( interestJTextField.getText() ); // calculate loan amount and monthly interest int loanAmount = price - downPayment; double monthlyInterest = interest / 1200; // format to display monthlyPayment in currency format DecimalFormat dollars = new DecimalFormat( "$0.00" ); // while years is less than or equal to five years while ( years <= 5 ) { // calculate payment period months = 12 * years; // get monthlyPayment