通过组合框将天数添加到Java文本字段中 [英] Add days to a Java textfield through combobox

问题描述

此处链接到GUI图像-------> http://imgur.com/uPD0K5S

LINK TO GUI IMAGE HERE -------> http://imgur.com/uPD0K5S

public class MainMenu extends javax.swing.JFrame {


public MainMenu() {
    initComponents();       
    cmbRoomNumber.setEnabled(false);
    jPanel1.setVisible(false);
    btnBook.setEnabled(false);
    //SETTING COMBOBOXES TO NONE
    cmbPhotoId.setSelectedIndex(-1);
    cmbStayDuration.setSelectedIndex(-1);
    //LABELS VALIDATION
    jlblNameVer.setVisible(false);

    //SETTING DATE TODAY
    Date now = new Date();
    //Set date format as you want
    SimpleDateFormat sf = new SimpleDateFormat("dd/MM/yyyy"); 
    this.ftxtCheckinDate.setText(sf.format(now));

}

如您所见，我想根据组合框(cmbStayDuration)中选择的天数，将天数添加到结帐日期(ftxtCheckOutDate)

As you can see i want to add days to Check-out Date(ftxtCheckOutDate) depending on how many days selected in the combobox(cmbStayDuration)

我正在使用netbeans JFrame

Im using netbeans JFrame

谢谢:)

private void cmbStayDurationActionPerformed(java.awt.event.ActionEvent evt) {                                                

}                                               

推荐答案

Calendar c = Calendar.getInstance();

c.setTime(new Date());

c.add(Calendar.DATE, combobox number);

基本上，Calendar类具有添加日期的功能. 立即获取日期，获取组合框日期，然后添加日期.

Basically Calendar class has a function to add days. Get the date now, get the combo box day, then add it.

例如:

 public static void main(String[] args) {
    // TODO code application logic here

    Calendar c = Calendar.getInstance();
    Date d = new Date();
    SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");

    c.setTime(d);
    System.out.println(sdf.format(c.getTime()));


    c.setTime(d);
    c.add(Calendar.DATE, 10);
    System.out.println(sdf.format(c.getTime()));

}

输出:

05/11/2015
15/11/2015

关于随着ComboBox更改而更改签出日期"窗体的值，可以添加一个ActionListener来侦听它的更改. 示例

As for changing the value of Check-out Date form as the ComboBox changes, you can add either an ActionListener to listen to it change. Example

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