?? comprehenquery.java
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jcb.removeItem("30");
}
else if (jcb.getItemCount() == 28)
{
jcb.addItem("29");
}
}
//The year is not leap year
else
{
if (jcb.getItemCount() == 29)
{
jcb.removeItem("29");
}
else if (jcb.getItemCount() == 30)
{
jcb.removeItem("29");
jcb.removeItem("30");
}
else if (jcb.getItemCount() == 31)
{
jcb.removeItem("29");
jcb.removeItem("30");
jcb.removeItem("31");
}
}
}
//There are 31 days in the left months
else
{
if (jcb.getItemCount() == 28)
{
jcb.addItem("29");
jcb.addItem("30");
jcb.addItem("31");
}
else if (jcb.getItemCount() == 29)
{
jcb.addItem("30");
jcb.addItem("31");
}
else if (jcb.getItemCount() == 30)
{
jcb.addItem("31");
}
}
}
//The monitor method for the time combobox
public void itemStateChanged(ItemEvent e)
{
//Change the items in the day combobox dynamically
//according to the year and month that you choose
if (e.getSource() == jcbYear1 || e.getSource() == jcbMonth1)
{
String year = (String)jcbYear1.getSelectedItem();
String month = (String)jcbMonth1.getSelectedItem();
updateDay(year,month,jcbDay1);
}
//The same reason as the above one
if (e.getSource() == jcbYear2 || e.getSource() == jcbMonth2)
{
String year = (String)jcbYear2.getSelectedItem();
String month = (String)jcbMonth2.getSelectedItem();
updateDay(year,month,jcbDay2);
}
}
//An inner class for the JRadioButton listener
class RadioListener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
//Remove and add components into the framework dynamically
//according to the query mode you have selected!
//If you choose the one way query mode
if (jrbSingle.isSelected())
{
jlFirstArrive.setText(" ");
//Remove the present components in the jpFirstArriveBox panel
jpFirstArriveBox.removeAll();
//Add the designate component into the panel in the designate query mode
jpFirstArriveBox.add(jpReplaceArrive);
//Use the method repaint() so that the component you just add into the panel
//can be showed immediately
jpFirstArriveBox.repaint();
jlArrive.setText(" 到達城市:");
jlTime1.setText(" 出發日期:");
jlTime2.setText(" ");
jpTime2Box.removeAll();
jpTime2Box.add(jpReplaceTime);
jpTime2Box.repaint();
}
//If you choose the out and home query mode
else if(jrbDouble.isSelected())
{
jlFirstArrive.setText(" ");
jpFirstArriveBox.removeAll();
jpFirstArriveBox.add(jpReplaceArrive);
jpFirstArriveBox.repaint();
jlArrive.setText(" 到達城市:");
jlTime1.setText(" 出發日期:");
jlTime2.setText(" 返程日期:");
jpTime2Box.removeAll();
jpTime2Box.add(jpTime2);
jpTime2Box.repaint();
}
//If you choose the mutiple way query mode
else if (jrbMutiple.isSelected())
{
jlFirstArrive.setText("第一到達城市:");
jpFirstArriveBox.removeAll();
jpFirstArriveBox.add(jpArrive1);
jpFirstArriveBox.repaint();
jlArrive.setText("第二到達城市:");
jlTime1.setText("第一出發日期:");
jlTime2.setText("第二出發日期:");
jpTime2Box.removeAll();
jpTime2Box.add(jpTime2);
jpTime2Box.repaint();
}
}
}
//The monitor method for the button "jbQuery"
public void actionPerformed(ActionEvent e)
{
//According to the query mode you choose,the operation is different
//If you choose the one way query mode
if (jrbSingle.isSelected())
{
//Get the start place
start = (String)jcbStart.getSelectedItem();
//Trim the space at the side of the string
start = start.trim();
//Get the destination
arrive = (String)jcbArrive.getSelectedItem();
arrive = arrive.trim();
//Get the leave time
leaveYear = (String)jcbYear1.getSelectedItem();
leaveMonth = (String)jcbMonth1.getSelectedItem();
leaveDay = (String)jcbDay1.getSelectedItem();
//Judge whether the time you choose is valid or not
if (!isTimeValid(leaveYear,leaveMonth,leaveDay))
{
//If the time is not valid,show error message to the user
JOptionPane.showMessageDialog(null,"已經過了出發時間,請重新設定并查詢",
"錯誤信息",JOptionPane.ERROR_MESSAGE);
return;
}
//The method timeToWeek is used to turn the designate day into the weekday
//Like turn "2004,12,25" into 6(Saturday)
leaveWeek = timeToWeek(leaveYear,leaveMonth,leaveDay);
//Get which air firm you want to take
airFirm = (String)jcbAirFirm.getSelectedItem();
airFirm = airFirm.trim();
//Do the query work
executeSingleQuery();
}
//If you choose the out and home way query mode
else if(jrbDouble.isSelected())
{
start = (String)jcbStart.getSelectedItem();
start = start.trim();
arrive = (String)jcbArrive.getSelectedItem();
arrive = arrive.trim();
//Get the leave time
leaveYear = (String)jcbYear1.getSelectedItem();
leaveMonth = (String)jcbMonth1.getSelectedItem();
leaveDay = (String)jcbDay1.getSelectedItem();
//Get the back time
backYear = (String)jcbYear2.getSelectedItem();
backMonth = (String)jcbMonth2.getSelectedItem();
backDay = (String)jcbDay2.getSelectedItem();
//Judge whether the time you choose is valid or not
if (!isTimeValid(leaveYear,leaveMonth,leaveDay))
{
JOptionPane.showMessageDialog(null,"已經過了出發時間,請重新設定并查詢",
"錯誤信息",JOptionPane.ERROR_MESSAGE);
return;
}
if (!isTimeValid(leaveYear,leaveMonth,leaveDay,backYear,backMonth,backDay))
{
JOptionPane.showMessageDialog(null,"返程日期不能比出發日期早,請重新設定并查詢",
"錯誤信息",JOptionPane.ERROR_MESSAGE);
return;
}
leaveWeek = timeToWeek(leaveYear,leaveMonth,leaveDay);
backWeek = timeToWeek(backYear,backMonth,backDay);
airFirm = (String)jcbAirFirm.getSelectedItem();
airFirm = airFirm.trim();
executeDoubleQuery();
}
//If you choose the mutiple way query mode
else if (jrbMutiple.isSelected())
{
start = (String)jcbStart.getSelectedItem();
start = start.trim();
//Get the midway destination
firstArrive = (String)jcbFirstArrive.getSelectedItem();
firstArrive = firstArrive.trim();
//Get the final destination
arrive = (String)jcbArrive.getSelectedItem();
arrive = arrive.trim();
//Get the leave time for the start city
leaveYear = (String)jcbYear1.getSelectedItem();
leaveMonth = (String)jcbMonth1.getSelectedItem();
leaveDay = (String)jcbDay1.getSelectedItem();
//Get the leave time for the midway city
leaveYear2 = (String)jcbYear2.getSelectedItem();
leaveMonth2 = (String)jcbMonth2.getSelectedItem();
leaveDay2 = (String)jcbDay2.getSelectedItem();
//Judge whether the time you choose is valid or not
if (!isTimeValid(leaveYear,leaveMonth,leaveDay))
{
JOptionPane.showMessageDialog(null,"已經過了出發時間,請重新設定并查詢",
"錯誤信息",JOptionPane.ERROR_MESSAGE);
return;
}
if (!isTimeValid(leaveYear,leaveMonth,leaveDay,leaveYear2,leaveMonth2,leaveDay2))
{
JOptionPane.showMessageDialog(null,"返程日期不能比出發日期早,請重新設定并查詢",
"錯誤信息",JOptionPane.ERROR_MESSAGE);
return;
}
leaveWeek = timeToWeek(leaveYear,leaveMonth,leaveDay);
leaveWeek2 = timeToWeek(leaveYear2,leaveMonth2,leaveDay2);
airFirm = (String)jcbAirFirm.getSelectedItem();
airFirm = airFirm.trim();
executeMutipleQuery();
}
}
//The method used to judge whether the time the you choose is valid or nor
//If the time you choose is earlier than the present time ,it isn;t valid
private boolean isTimeValid(String year,String month,String day)
{
int y = Integer.parseInt(year);
int m = Integer.parseInt(month);
int d = Integer.parseInt(day);
//Get the present time
Calendar cal = Calendar.getInstance();
cal.setTime(new java.util.Date());
int py = cal.get(Calendar.YEAR);
int pm = cal.get(Calendar.MONTH) + 1;
int pd = cal.get(Calendar.DAY_OF_MONTH);
if (y == py)
{
if (m < pm)
return false;
else if(d < pd)
return false;
}
return true;
}
//The method alse used to judge whether the time the you choose is valid or nor
//But it is used to determine whether the leave time for the start city is later
//than the leave time for the midway city! If so ,it isn't valid
private boolean isTimeValid(String year1,String month1,String day1,
String year2,String month2,String day2)
{
int y1 = Integer.parseInt(year1);
int m1 = Integer.parseInt(month1);
int d1 = Integer.parseInt(day1);
int y2 = Integer.parseInt(year2);
int m2 = Integer.parseInt(month2);
int d2 = Integer.parseInt(day2);
if (y1 < y2)
return true;
else if (y1 == y2)
{
if (m1 < m2)
return true;
else if (m1 == m2)
{
if (d1 < d2)
return true;
else if (d1 == d2)
return true;
else
return false;
}
else
return false;
}
else
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