I'm trying to add the system date with a Label. What is wrong with the code

Question

import java.util.*;
import javax.swing.*;
public class CurrentDateApplet extends JApplet
     Calendar currentCalendar = Calendar.getInstance();
     JLabel dateLabel = new JLabel();
     JPanel mainPanel = new JPanel();
     int dayInteger = currentCalendar.get(Calendar.DATE);
     int monthInteger = currentCalendar.get(Calendar.MONTH)+1;
     int yearInteger = currentCalendar.get(Calendar.YEAR);
     public void init()
          mainPanel.add(dateLabel);
          setContentPane(mainPanel);
          dateLabel.append(currentCalendar.get(Calendar.HOUR) + currentCalendar.get
                    (Calendar.MINUTE);
}

Answer 1

As for what's wrong with the code, it would be easier if you said: it doesn't show the date (it does this instead), it doesn't compile (I get this message) etc.
Anyway I'll assume you want to display the time in a label...
dateLabel.append(currentCalendar.get(Calendar.HOUR) + currentCalendar.get
(Calendar.MINUTE);This won't compile: the parentheses are mismatched, and there is simply no such thing as append(). So we could trydateLabel.setText("" + currentCalendar.get(Calendar.HOUR) + currentCalendar.get(Calendar.MINUTE));This wroks, but looks pretty nasty and it's not how you are supposed to format dates and times. Here's the unofficial party line, nicked from one of jverd's posts:
Calculating Java dates: Take the time to learn how to create and use dates
Formatting a Date Using a Custom Format
Parsing a Date Using a Custom Format
From those links you should be able to find those applicable to times like this: http://www.exampledepot.com/egs/java.text/FormatTime.html
Using this approach you would end up with something like:import java.text.Format;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.JApplet;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class CurrentDateApplet extends JApplet
    private Date date;
    private JLabel timeLabel;
    private JPanel mainPanel;
    public void init()
        mainPanel = new JPanel();
        timeLabel = new JLabel();
        mainPanel.add(timeLabel);
        setContentPane(mainPanel);
        date = new Date();
        Format formatter = new SimpleDateFormat("HH:ss a");
        timeLabel.setText(formatter.format(date));
}