java 空的 JDateChooser
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时间：2020-10-31 17:53:36 来源:igfitidea点击:
Empty JDateChooser
提问by Unoken Mouny
I'm using JDateChooser for a Javaapp (this is the 1st time i use it). I want to catch fault when the JDateChooser is empty with code like this:
我将 JDateChooser 用于 Javaapp（这是我第一次使用它）。我想在 JDateChooser 为空时捕获错误，代码如下：
if(dcs1.getDate().toString().isEmpty()){
lblOk.setText("Empty");
}else{
Date d = dcs1.getDate();
DateFormat df = new SimpleDateFormat("MM-dd-yyyy");
String t = df.format(d);
lblOk.setText(t);
}
JLabel lblOk;
JDateChooser dcs1;
But it dont work. Any1 can help me plzz.
但它不起作用。Any1可以帮助我。
回答by Irshad Khan
Date date;
date = JDateChooser.getDate();
if (date == null)
{
JOptionPane.showMessageDialog(null, "Choose Date from Right Box.", "Error", JOptionPane.ERROR_MESSAGE);
JDateChooser.grabFocus();
return false;
}
回答by user1391111
String s = ((JTextField)dateChooser.getDateEditor().getUiComponent()).getText();
if (s.equals("") {
JOptionPane.showMessageDialog(null, "Please type birthday", "Warning!", JOptionPane.ERROR_MESSAGE);
}
回答by David
if(jDateChooser1.getDate() == null){
JOptionPane.showMessageDialog(this, "Date not selected","No selection",JOptionPane.INFORMATION_MESSAGE);
jDateChooser1.requestFocusInWindow();
}
回答by rustheviking
if (jDateChooserBirthDate.getDate() == null) {
JOptionPane.showMessageDialog(null, "Please type birthday", "Warning!", JOptionPane.ERROR_MESSAGE);
}
回答by Mukesh Chauhan
I used DateChooserCombo. and The following code worked for me.
我使用了 DateChooserCombo。和以下代码对我有用。
String test = dateChooserID.getText();
if(!test.equals("")){
//DO WHATEVER YOU WANT (DATE IS SELECTED IN THIS CASE);
}
else{
JOptionPane.showMessageDialog(this, "date not choosen");
}
