有没有办法将默认值设置为“00:00”？

Question

当我运行程序时，默认值是实际时间。有没有办法将默认值设置为＆＃34; 00：00＆＃34;？

Date date = new Date();
morningtimeSpinner = new JSpinner(new SpinnerDateModel());  
morningtimeSpinner.setBorder(new LineBorder(Color.LIGHT_GRAY, 2, true));
morningtimeSpinner.setBounds(200,182,75,30);
contentPane.add(morningtimeSpinner);
JSpinner.DateEditor timeEditor = new JSpinner.DateEditor(
                                        morningtimeSpinner, "hh:mm a");
morningtimeSpinner.setEditor(timeEditor);
morningtimeSpinner.setValue(date);
morningtimeSpinner.addChangeListener(new ChangeListener() {
    @Override
    public void stateChanged(ChangeEvent arg0) {
        dd = (Date) morningtimeSpinner.getValue();
    }
});

Answer 1

可以使用java.util.Calendar

按如下所示完成

// get calender for today's date    
Calendar date = new GregorianCalendar();

// reset hour, minutes, seconds and millis to midnight
date.set(Calendar.HOUR_OF_DAY, 0);
date.set(Calendar.MINUTE, 0);
date.set(Calendar.SECOND, 0);
date.set(Calendar.MILLISECOND, 0);

或者，您也可以使用joda-time API

DateTime today = new DateTime().withTimeAtStartOfDay();