biorhythmform.java

J2ME核心类及MIDlet类 MIDP用户界面对象 图形处理及低级事件处理 多线程编程 I/O及网络编程 数据库RMS编程 浮点数编程 多媒体及GAME API编程 安全、加密及

import java.util.Calendar;
import java.util.Date;
import javax.microedition.lcdui.*;

class BiorhythmForm extends Form
{

    public BiorhythmForm( String str)
    {
		super( str );
        y = new TextField("年", "", 4, TextField.NUMERIC);
        m = new TextField("月", "", 2, TextField.NUMERIC);
        d = new TextField("日", "", 2, TextField.NUMERIC);
        append(y);
        append(m);
        append(d);
    }

    public void setDate(Date date)
    {
        if(date != null)
        {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            y.setString(Integer.toString(
				calendar.get(Calendar.YEAR)));
            m.setString(Integer.toString(
				calendar.get(Calendar.MONTH ) + 1));
            d.setString(Integer.toString(
				calendar.get(Calendar.DATE)));
        }
    }

    public Date getDate()
    {
		try{
			Calendar calendar = Calendar.getInstance();
			calendar.set(Calendar.YEAR,
				Integer.parseInt(y.getString()));
			calendar.set(Calendar.MONTH, 
				Integer.parseInt(m.getString()) - 1);
			calendar.set(Calendar.DATE, 
				Integer.parseInt(d.getString()));
			return calendar.getTime();
		}catch(Exception e )
		{
			return null;
		}
    }

    protected TextField y;
    protected TextField m;
    protected TextField d;

}