需要为一个景区实现计算景区门票的程序，已知成年人的门票价格是100元，儿童票打3折，老年票打5折。使用抽象类来为任意多张不同类型的票计算总价。其UML类图如下所示。
程序实现结果如下图所示：
要求：给出程序具体的实现代码，程序运行正确稳定。
//package en.edu.shengda;
/**
*
* @author 201705050153 张宜强
*/
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
abstract class Ticket {
private float price;
public Ticket() {
this.price=100;
}
public Ticket (float price) {
this.price=price;
}
public float getPrice() {
return price;
}
public abstract float singlePrice();
}
class YoungTicket extends Ticket{
public float singlePrice() {
return this.getPrice();
}
public YoungTicket() {
}
public YoungTicket(float price) {
super(price);
}
}
class OldTicket extends Ticket{
public float singlePrice() {
return (float) (this.getPrice()*0.5);
}
public OldTicket() {
}
public OldTicket(float price) {
super(price);
}
}
class ChildTicket extends Ticket{
public float singlePrice() {
return (float) (this.getPrice()*0.3);
}
public ChildTicket() {
}
public ChildTicket(float price) {
super(price);
}
}
public class Main extends javax.swing.JFrame {
public Main() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollBar1 = new javax.swing.JScrollBar();
jScrollPane1 = new javax.swing.JScrollPane();
jTextPane1 = new javax.swing.JTextPane();
jScrollPane3 = new javax.swing.JScrollPane();
jTextPane2 = new javax.swing.JTextPane();
jScrollPane4 = new javax.swing.JScrollPane();
jTextPane3 = new javax.swing.JTextPane();
jScrollPane5 = new javax.swing.JScrollPane();
jTextPane4 = new javax.swing.JTextPane();
jButton1 = new javax.swing.JButton();
jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String YoungNumber = jTextPane1.getText();
int a=Integer.parseInt(YoungNumber);
String OldNumber = jTextPane2.getText();
int b=Integer.parseInt(OldNumber);
String ChildNumber = jTextPane3.getText();
int c=Integer.parseInt(ChildNumber);
YoungTicket Ticket1= new YoungTicket();
OldTicket Ticket2= new OldTicket();
ChildTicket Ticket3= new ChildTicket();
float TotalPrice = Ticket1.singlePrice()*a + Ticket2.singlePrice()*b + Ticket3.singlePrice()*c;
String ans = Float.toString(TotalPrice);
jTextPane4.setText(ans);
}
});
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jScrollPane1.setViewportView(jTextPane1);
jScrollPane3.setViewportView(jTextPane2);
jScrollPane4.setViewportView(jTextPane3);
jScrollPane5.setViewportView(jTextPane4);
jButton1.setText("计算");
jLabel1.setText("张");
jLabel2.setText("张");
jLabel3.setText("张");
jLabel4.setText("元");
jLabel5.setText("成年票:");
jLabel6.setText("门票标准单价:");
jLabel7.setText("老年票:");
jLabel8.setText("儿童票:");
jLabel9.setText("总价:");
jTextField1.setText("100");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(53, 53, 53)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel6)
.addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 222, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel8)
.addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel9))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 6, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jScrollPane5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 59, Short.MAX_VALUE)
.addComponent(jScrollPane4, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(jLabel3)
.addComponent(jLabel4)))
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(108, 108, 108))
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(48, 48, 48)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(40, 40, 40)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jScrollPane1)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel5, javax.swing.GroupLayout.DEFAULT_SIZE, 16, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, 25, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel8)
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jScrollPane5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel9)))
.addGroup(layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel4)))
.addGap(37, 37, 37)
.addComponent(jButton1)
.addContainerGap())
);
pack();
}// </editor-fold>
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Main().setVisible(true);
//System.out.println(jTextPane1.getText());
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JScrollBar jScrollBar1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JScrollPane jScrollPane4;
private javax.swing.JScrollPane jScrollPane5;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextPane jTextPane1;
private javax.swing.JTextPane jTextPane2;
private javax.swing.JTextPane jTextPane3;
private javax.swing.JTextPane jTextPane4;
// End of variables declaration
}
程序运行结果:
