PBO-C 3 : Informasi()

import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.concurrent.TimeUnit;
public class Informasi{
    private String Imsyak, Subuh, Dzuhur, Ashar, Maghrib, Isya;
    private Date timenow = new Date();
    Informasi(){
        this.Imsyak             = "03:35:00";
        this.Subuh              = "03:45:00";
        this.Dzuhur             = "11:14:00";
        this.Ashar              = "14:23:00";
        this.Maghrib            = "17:23:00";
        this.Isya               = "18:33:00";
    }
    public String jam(){
       DateFormat df = new SimpleDateFormat("HH:mm:ss");
       return df.format(this.timenow);
    }
    public String hari(){
       DateFormat df = new SimpleDateFormat("dd-MM-yy");
       return df.format(this.timenow);
    }
    public void terdekat(){
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
        long diff=0;
        String sholat="";
        try{
            Date now = sdf.parse(this.jam());
            Date then = sdf.parse(Subuh);
            diff = then.getTime()-now.getTime();
            sholat="SUBUH";
            if(diff<0){
                then = sdf.parse(Dzuhur);
                diff = then.getTime()-now.getTime();
                sholat="DZUHUR";
                if(diff<0){
                    then = sdf.parse(Ashar);
                    diff = then.getTime()-now.getTime();
                    sholat="ASHAR";
                    if(diff<0){
                        then = sdf.parse(Maghrib);
                        diff = then.getTime()-now.getTime();
                        sholat="MAGHRIB";
                        if(diff<0){
                            then = sdf.parse(Isya);
                            diff = then.getTime()-now.getTime();
                            sholat="ISYA";
                        }
                    }
                }
            }
        }catch(Exception e){
            e.printStackTrace();
        }
        long diffSeconds = diff / 1000 % 60;
        long diffMinutes = diff / (60 * 1000) % 60;
        long diffHours = diff / (60 * 60 * 1000) % 24;
        String ret="";
        if(diffHours>0) ret=ret+diffHours+" JAM ";
        if(diffMinutes>0) ret=ret+diffMinutes+" MENIT ";
        if(diffSeconds>0) ret=ret+diffSeconds+" DETIK ";
        System.out.println(ret+"MENUJU SHOLAT "+sholat);
    }
    public String getImsyak(){
        return Imsyak;
    }
    public String getSubuh(){
        return Subuh;
    }
    public String getDzuhur(){
        return Dzuhur;
    }
    public String getAshar(){
        return Ashar;
    }
    public String getMaghrib(){
        return Maghrib;
    }
    public String getIsya(){
        return Isya;
    }
}