Loading date into JTextField [closed]

问题

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.

Closed 6 years ago.

I had some problems loading a date into a JTextField. What mistakes did I make?

public static void main(String args[]) {
  try {

    for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
      if ("Nimbus".equals(info.getName())) {
        javax.swing.UIManager.setLookAndFeel(info.getClassName());
        break;
      }
    }
  } catch (ClassNotFoundException ex) {
    java.util.logging.Logger.getLogger(NewApplication.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (InstantiationException ex) {
    java.util.logging.Logger.getLogger(NewApplication.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (IllegalAccessException ex) {
    java.util.logging.Logger.getLogger(NewApplication.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (javax.swing.UnsupportedLookAndFeelException ex) {
    java.util.logging.Logger.getLogger(NewApplication.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  }
  //</editor-fold>

  /* Create and display the form */
  java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
      new NewApplication().setVisible(true);
    }
  });

}
//---------------------------------------------------------------------------
public class FormatedDate {
  Date dNow = new Date();
  SimpleDateFormat ft = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz");
  String reportDate = ft.format(dNow);

  public void LoadDate() {
    jTextField3.setText(reportDate);
    System.out.println("Current Date: " + reportDate);
  }
}
//--------------------------------------------------------------------------- 

回答1:

DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");

1. get current date time with Date()

   //get current date time with Date()
      Date date = new Date();
      System.out.println(dateFormat.format(date));
      jTextField3.setText(dateFormat.format(date));
   

2. get current date time with Calendar()

   //get current date time with Calendar()
      Calendar cal = Calendar.getInstance();
      jTextField3.setText(dateFormat.format(cal.getTime()));
   

来源：https://stackoverflow.com/questions/16285019/loading-date-into-jtextfield