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Old 20-Aug-2009, 08:05
Miky-Maous Miky-Maous is offline
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Exception in thread "main" java.lang.NullPointerException

I would like some help with this code i wrote whick keeps bringing me the same error msg, thx in advance:
Exception in thread "main" java.lang.NullPointerException
at myproject.Main.epilogiastheni(Main.java:163)
at myproject.Main.allagistoixeiwn(Main.java:220)
at myproject.Main.main(Main.java:75
Java Result: 1

With this message my program doesnt let me to alter the elements of astheneis when i store them.

JAVA Code:
package myproject;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
public class Main
{
static Vector giatroi;
static Vector grammateis;
static Vector astheneis;
static Vector imerologio;
static Vector exoplismoi;
static Iterator it;
static Iterator it1;
static Iterator it2;
static Iterator it3;
static Iterator it4;
static Programma current;
static FileOutputStream fos = null;
static FileInputStream fis = null;
static ObjectOutputStream out = null;
static ObjectInputStream Oin = null;
static BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
static int num;
static int codex;
static int codexx;
static Exetasi a;
static Asthenis q;
static Grammateas h;
static Giatros g;
static Exoplismos exoplismos;
static Programma programma;
private static void diathesimosexoplismos() throws IOException
{
if(exoplismoi.size() == 0)
{
System.out.println("Den yparxei exoplismos");
return;
}
System.out.println("Idou o diathesimos exoplismos pou diatithetai:");
int option = 0;
int k = 0;
boolean flag=false;
for(int i=0;i<exoplismoi.size();i++)
{
System.out.print(++k + ".");
exoplismos = (Exoplismos)exoplismoi.get(i);
exoplismos.ShowOnoma();
System.out.println("Kwdikas exoplismou" + exoplismos.GetCode());
}
do
{
System.out.println("Dwste thn epilogi sas");
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.out.println("Lathos epilogi");
continue;
}
if(option <= 0 || option > exoplismoi.size())
System.out.println("Lathos epilogi");
}
while(option <= 0 || option > exoplismoi.size());
exoplismos = (Exoplismos)exoplismoi.get(option - 1);
int onoma = exoplismos.GetOnoma();
int code = exoplismos.GetCode();
System.out.println("O exoplismos aytos xrisimopoieitai");
for(int i = 0; i < imerologio.size(); i++)
{
programma = (Programma)imerologio.get(i);
if(programma.GetExetasi() == onoma && programma.GetCode() == code)
{
SimpleDateFormat formatter = new SimpleDateFormat("E dd.MM.yyyy");
System.out.println(formatter.format(programma.getD ate()));
flag=true;
}
}
if(flag==false)
{
System.out.println("Den exei programmatistei exetasi me xrisi tou sigekrimenou exoplismou.");
}
}
private static void programma() throws IOException
{
SimpleDateFormat formatter = new SimpleDateFormat("E dd.MM.yyyy");
Calendar cal = Calendar.getInstance();
cal.set(11, 0);
cal.set(12, 0);
cal.set(13, 0);
cal.set(14, 0);
String next = "next";
String previous = "pre";
String exit = "exit";
String c = null;
do
{
int k = 0;
if(cal.get(7) != 7 && cal.get(7) != 1)
{
int i = 0;
do
{
if(i >= imerologio.size())
break;
programma = (Programma)imerologio.get(i);
if(programma.getDate().compareTo(cal.getTime()) == 0)
{
a = (Exetasi)astheneis.get(programma.GetNum() - 1);
System.out.println("Hmeromhnia:" + formatter.format(programma.getDate()));
System.out.println("Onomatepwnymo:" + a.GetOnoma()+ " " + a.GetEpitheto());
System.out.print("EXETASI:");
programma.ShowExetasi();
if(programma.GetCode() != 4)
System.out.println("Kwdikos exoplismou:" + programma.GetCode());
k = 1;
break;
}
i++;
}
while(true);
if(k == 0)
{
System.out.println("Hmeromhnia:" + formatter.format(cal.getTime()));
System.out.println("Den yparxei programma gia aytin ti mera.");
}
}
else
{
System.out.println("Hmeromhnia:"+formatter.format( cal.getTime()));
System.out.println("To diagnwstiko kentro den leitourgei logw kalokairinwn diakopwn.");
}
System.out.println("pre,next,exit");
c = in.readLine();
if(next.equals(c))
cal.add(6, 1);
else if(previous.equals(c))
{
cal.add(6, -1);
}
else
{
if(exit.equals(c))
return;
System.err.println("Lathos epilogh");
}
}
while(true);
}
private static int epilogiastheni() throws IOException
{
if(astheneis.size() == 0)
{
System.out.println("Den exoun kataxwrithei astheneis");
return 0;
}
System.out.println("Epilekste asthenh");
int option = 0;
for(int i=0;i<astheneis.size();i++)
{
q = (Asthenis)astheneis.get(i);
System.out.println(a.GetNum()+"."+a.GetOnoma()+ " " +a.GetEpitheto());
}
do
{
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.out.println("Lathos epilogh");
continue;
}
if(option <= 0 || option > astheneis.size())
System.out.println("Lathos epilogh");
}
while(option <= 0 || option > astheneis.size());
return option;
}
private static void istoriko() throws IOException
{
int asthenis = epilogiastheni();
if(asthenis == 0)
return;
a = (Exetasi)astheneis.get(asthenis - 1);
if(a.GetExetasi() == 0)
{
System.out.println("Den yparxei programmatismeni exetasi gia ton astheni.");
return;
}
System.out.println("Exetasi:" + a.GetExetasi());
System.out.print("Exetasi:");
a.GetExetasi();
a.ShowExetasi();
System.out.println("p:" + a.GetExetasi() +a.GetP());
a.GetExetasi();
a.showDates();
System.out.println("Plhktrologhste yes gia dimiourgia tou istorikou i no gia akyrwsh.");
String yes = "yes";
String no = "no";
for(String c = null; !yes.equals(c) && !no.equals(c)
{
c = in.readLine();
if(c.equals(yes))
{
a.SetExetasi(0);
System.out.println("Oloklirwsi kataxwrisis istorikou");
}
else
if(c.equals(no))
System.out.println("Epistrofh sto kedriko menou");
else
System.err.println("Lathos epilogh");
}
}
private static void allagistoixeiwn() throws IOException
{
int asthenis = epilogiastheni();
if(asthenis == 0)
return;
int i;
i = 0;
do
{
if(i >= astheneis.size())
break;
q = (Asthenis)astheneis.get(i);
if(q.GetNum() == asthenis)
break;
i++;
}
while(true);
System.out.println("Poio stoixeio epitheimeite na allaxete;:");
int option = 0;
do
{
System.out.println("1.Onoma:" + q.GetOnoma());
System.out.println("2.Epitheto:" + q.GetEpitheto());
System.out.println("3.Dieuthinsi:" + q.GetDieythinsi());
System.out.println("4.Tilefwno:" + q.GetTilefwno());
System.out.println("5.Asfalistikos foreas:" + q.GetForeas());
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
continue;
}
if(option != 1 && option != 2 && option != 3 && option != 4 && option != 5)
System.err.println("Lathos epilogh");
}
while(option != 1 && option != 2 && option != 3 && option != 4 && option != 5);
switch(option)
{
case 1:
{
System.out.print("Onoma:");
String edit = in.readLine();
q.SetOnoma(edit);
break;
}
case 2:
{
System.out.print("Epitheto:");
String edit = in.readLine();
q.SetEpitheto(edit);
break;
}
case 3:
{
System.out.print("Dieythinsi:");
String edit = in.readLine();
q.SetDieythinsi(edit);
break;
}
case 4:
{
System.out.print("Tilefwno:");
String edit = in.readLine();
q.SetTilefwno(edit);
break;
}
case 5:
{
System.out.print("Asfalistikos foreas:");
String edit = in.readLine();
q.SetForeas(edit);
break;
}
}
astheneis.set(i, q);
System.out.println("H diorthwsh oloklhrwthike.");
}
private static int epilogiexoplismou(int exetasi) throws IOException
{
System.out.println("Epilekste kwdiko exoplismou:");
int kwdikos = 0;
it3 = exoplismoi.iterator();
do
{
if(!it3.hasNext())
break;
exoplismos = (Exoplismos)it3.next();
if(exoplismos.GetOnoma() == exetasi)
{
System.out.println("Kwdikos:" + exoplismos.GetCode());
kwdikos = exoplismos.GetCode();
}
}
while(true);
if(kwdikos == 0)
{
System.out.println("Den yparxei exoplismos gia ti sigekrimeni exetasi.");
return 0;
}
int option = 0;
do
{
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
continue;
}
if(option < 0 || option > kwdikos)
System.err.println("Lathos epilogh");
}
while(option <= 0 || option > kwdikos);
return option;
}
private static void kataxwrisiexoplismou() throws IOException
{
System.out.println("Epilekste exoplismo:");
int option = 0;
do
{
System.out.println("1---->Magnitikos tomografos");
System.out.println("2---->Axonikos tomografos");
System.out.println("3---->Exoplismos iperixou");
System.out.println("4---->Exoplismos aktinografiwn");
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
continue;
}
if(option != 1 && option != 2 && option != 3 && option != 4)
System.err.println("Lathos epilogh");
}
while(option != 1 && option != 2 && option != 3 && option != 4);
int code = 0;
it3 = exoplismoi.iterator();
do
{
if(!it3.hasNext())
break;
exoplismos = (Exoplismos)it3.next();
if(exoplismos.GetOnoma() == option)
code = exoplismos.GetCode();
}
while(true);
code++;
exoplismos = new Exoplismos();
exoplismos.SetOnoma(option);
exoplismos.SetCode(code);
exoplismoi.add(exoplismos);
System.out.println("Termatismos kataxwrisis. Kwdikos exoplismou:" + code);
}
private static int MenouExetasewn() throws IOException
{
System.out.println("EXETASEIS");
int option = 0;
do
{
System.out.println("1.Aimatologikes");
System.out.println("2.Ourologikes");
System.out.println("3.Ginaikologikes");
System.out.println("4.Tomografies kai aktinologia");
System.out.println("Epilexate:");
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
continue;
}
if(option != 1 && option != 2 && option != 3 && option != 4)
System.err.println("Lathos epilogh");
}
while(option != 1 && option != 2 && option != 3 && option != 4);
return option;
}
private static int p() throws IOException
{
int option = 0;
do
{
System.out.println("Dwste th epilogh sas:");
try
{
option = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
continue;
}
if(option != 1 && option != 2 && option != 3)
System.err.println("Lathos epilogh");
}
while(option != 1 && option != 2 && option != 3);
return option;
}
private static void programmatismosexetasewn() throws IOException
{
int asthenis = epilogiastheni();
if(asthenis == 0)
return;
a = (Exetasi)astheneis.get(asthenis - 1);
if(a.GetExetasi() != 0)
{
System.out.println("Yparxei idi kanonismeni exetasi gia ton asthenh");
return;
}
MenouExetasewn();
int y = MenouExetasewn();
int code = 4;
if(y != 4)
code = epilogiexoplismou(y);
if(code == 0)
return;
System.out.println("Dwste ton arithmo exetasewn p");
int p = p();
Date dates[] = new Date[p];
int i = 0;
do
{
if(i >= p)
break;
int k = 0;
Calendar cal = Calendar.getInstance();
cal.set(11, 0);

cal.set(12, 0);
cal.set(13, 0);
cal.set(14, 0);
if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY)
cal.add(6, 2);
if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY)
cal.add(7, 1);
while(k != 1)
{
String c = null;
String ok = "ok";
String next = "next";
int x = 0;
it3 = imerologio.iterator();
do
{
if(!it3.hasNext())
break;
programma = (Programma)it3.next();
if(programma.getDate().compareTo(cal.getTime()) != 0)
continue;
x = 1;
break;
}
while(true);
if(x == 1)
{
cal.add(6, 1);
if(cal.get(7) == 7)
cal.add(7, 2);
}
else
{
SimpleDateFormat formatter = new SimpleDateFormat("E dd.MM.yyyy");
System.out.println(formatter.format(cal.getTime()) );
while(!next.equals(c) && !ok.equals(c))
{
System.out.println("Plhktrologhste ok gia desmeysi ths sygekrimenhs imeromhnias i next " + "gia na deite thn epomeni diathesimi.");
c = in.readLine();
if(c.equals(ok))
{
System.out.println("H imerominia desmeytike.");
programma = new Programma();
programma.SetNum(asthenis);
programma.SetExetasi(y);
programma.SetCode(code);
programma.setDate(cal.getTime());
dates[i] = cal.getTime();
imerologio.add(programma);
programma = null;
k = 1;
}
else
if(c.equals(next))
{
cal.add(6, 1);
if(cal.get(7) == 7)
cal.add(6, 2);
}
else
{
System.err.println("Lathos epilogh");
}
}
}
}
i++;
}
while(true);
i = 0;
do
{
if(i >= astheneis.size())
break;
a = (Exetasi)astheneis.get(i);
if(a.GetNum() == asthenis)
{
Exetasi exetasi = new Exetasi();
exetasi.SetExetasi(y);
exetasi.SetP(p);
exetasi.OrismosImerominias(dates);
astheneis.set(i, a);
break;
}
i++;
}
while(true);
System.out.println("To programma ths therapeias kathoristhke.");
}
private static void kataxwrisiastheni() throws IOException
{
System.out.println("Dwse to onoma tou astheni:");
String onoma = in.readLine();
System.out.println("Dwse to epitheto tou astheni:");
String epitheto = in.readLine();
System.out.println("Dwse to tilefwno tou astheni:");
String tilefwno = in.readLine();
System.out.println("Dwse ti dieythinsi tou astheni:");
String dieythinsi = in.readLine();
System.out.println("Dwse ton asfalistiko forea tou astheni:");
String foreas = in.readLine();
q = new Asthenis();
q.SetStoixeia(onoma,epitheto,tilefwno,dieythinsi,f oreas,++num);
astheneis.addElement(q);
}
@SuppressWarnings("empty-statement")
private static void kataxwrisigiatrou() throws IOException
{
System.out.println("Dwse to onoma tou giatrou:");
String onoma = in.readLine();
System.out.println("Dwse to epitheto tou giatrou:");
String epitheto = in.readLine();
g = new Giatros();
g.SetStoixeia(onoma,epitheto,++codex);
giatroi.addElement(g);
}
@SuppressWarnings("empty-statement")
private static void kataxwrisigrammatea() throws IOException
{
System.out.println("Dwse to onoma tou grammatea:");
String onoma = in.readLine();
System.out.println("Dwse to epitheto tou grammatea:");
String epitheto = in.readLine();
h = new Grammateas();
h.SetStoixeia(onoma,epitheto,++codexx);
grammateis.addElement(h);
}
@SuppressWarnings("empty-statement")
public static void main(String args[]) throws IOException, ClassNotFoundException
{
Locale.setDefault(Locale.ENGLISH);
Calendar cal = Calendar.getInstance();
cal.set(11, 0);
cal.set(12, 0);
cal.set(13, 0);
cal.set(14, 0);
SimpleDateFormat formatter = new SimpleDateFormat("E dd.MM.yyyy");
System.out.println(formatter.format(cal.getTime()) );
imerologio = new Vector();
try
{
fis = new FileInputStream("imerologio");
Oin = new ObjectInputStream(fis);
boolean flag=false;
try
{
do
{
Programma eggr = (Programma)Oin.readObject();
imerologio.addElement(eggr);
flag=true;
}
while(true);
}
catch(EOFException endOfFileException)
{
if(flag==false) System.out.println("Den iparxei programma");
Oin.close();

}
}
catch(FileNotFoundException fileNotFoundException)
{
System.out.println("Den iparxei programma");
}
giatroi = new Vector();
try
{
fis = new FileInputStream("giatroi");
Oin = new ObjectInputStream(fis);
try
{
do
{
g = (Giatros)Oin.readObject();
giatroi.addElement(g);
}
while(true);
}
catch(EOFException endOfFileException)
{
Oin.close();
}
}
catch(FileNotFoundException fileNotFoundException)
{
}
if(giatroi.size() == 0)
{
codex=0;
System.out.println("Den iparxoun kataxwrimenoi giatroi");
}
else
codex = ((Giatros)giatroi.lastElement()).GetCodex();
grammateis = new Vector();
try
{
fis = new FileInputStream("grammateis");
Oin = new ObjectInputStream(fis);
try
{
do
{
h = (Grammateas)Oin.readObject();
grammateis.addElement(h);
}
while(true);
}
catch(EOFException endOfFileException)
{
Oin.close();
}
}
catch(FileNotFoundException fileNotFoundException)
{
}
if(grammateis.size() == 0)
{
codexx=0;
System.out.println("Den iparxoun kataxwrimenoi grammateis");
}
else
codexx = ((Grammateas)grammateis.lastElement()).GetCodexx() ;
astheneis = new Vector();
try
{
fis = new FileInputStream("astheneis");
Oin = new ObjectInputStream(fis);
try
{
do
{
q = (Asthenis)Oin.readObject();
astheneis.addElement(q);
}
while(true);
}
catch(EOFException endOfFileException)
{
Oin.close();
}
}
catch(FileNotFoundException fileNotFoundException)
{
}
if(astheneis.size() == 0)
{
num=0;
System.out.println("Den iparxoun kataxwrimenoi astheneis");
}
else
num = ((Asthenis)astheneis.lastElement()).GetNum();
exoplismoi = new Vector();
try
{
fis = new FileInputStream("exoplismoi");
Oin = new ObjectInputStream(fis);
try
{
do
{
exoplismos = (Exoplismos)Oin.readObject();
exoplismoi.addElement(exoplismos);
}
while(true);
}
catch(EOFException endOfFileException)
{
Oin.close();
}
}
catch(FileNotFoundException fileNotFoundException)
{
}
if(exoplismoi.size()==0)
System.out.println("Den iparxei kataxwrimenos exoplismos");
int epilogi=0;
do
{
System.out.println("Menou ipiresiwn diagnwstikou kentrou.");
System.out.println("1.Kataxwrish kai eisagwgi stoixeiwn asthenh");
System.out.println("2.Tropopoiisi stoixeiwn astheni");
System.out.println("3.Kataxwrisi giatrou");
System.out.println("4.Kataxwrisi grammatea");
System.out.println("5.Exoplismos pou diatithetai");
System.out.println("6.Kataxwrisi exoplismou");
System.out.println("7.Programmatismos exetasewn");
System.out.println("8.Ektipwsi programmatismenwn exetasewn");
System.out.println("9.Dimiourgia istorikou exetasis");
System.out.println("0.Exodos");
System.out.println("Dwste thn epilogh sas:");
try
{
epilogi = Integer.parseInt(in.readLine());
}
catch(NumberFormatException ne)
{
System.err.println("Lathos epilogh");
epilogi = 1;
continue;
}
if(epilogi==1) kataxwrisiastheni();
else if(epilogi==2) allagistoixeiwn();
else if(epilogi==3) kataxwrisigiatrou();
else if(epilogi==4) kataxwrisigrammatea();
else if(epilogi==5) diathesimosexoplismos();
else if(epilogi==6) kataxwrisiexoplismou();
else if(epilogi==7) programmatismosexetasewn();
else if(epilogi==8) programma();
else if(epilogi==9) istoriko();
else if(epilogi==0) System.out.println("Termatismos ipiresias");
else System.err.println("Parakalw pliktrologiste mia apo tis diathesimes epiloges");
}
while(epilogi != 0);
fos = new FileOutputStream("giatroi");
out = new ObjectOutputStream(fos);
for(it = giatroi.iterator(); it.hasNext(); out.writeObject(it.next()));
out.close();
fos = new FileOutputStream("grammateis");
out = new ObjectOutputStream(fos);
for(it1 = grammateis.iterator(); it1.hasNext(); out.writeObject(it1.next()));
out.close();
fos = new FileOutputStream("astheneis");
out = new ObjectOutputStream(fos);
for(it2 = astheneis.iterator(); it2.hasNext(); out.writeObject(it2.next()));
out.close();
fos = new FileOutputStream("exoplismoi");
out = new ObjectOutputStream(fos);
for(it3 = exoplismoi.iterator(); it3.hasNext(); out.writeObject(it3.next()));
out.close();
fos = new FileOutputStream("imerologio");
out = new ObjectOutputStream(fos);
for(it4 = imerologio.iterator(); it4.hasNext(); out.writeObject(it4.next()));
out.close();
}
}

class Asthenis:

package myproject;
public class Asthenis
{
private String onoma;
private String epitheto;
private String tilefwno;
private String dieythinsi;
private String foreas;
private int num;
public Asthenis(){};
public Asthenis(String onoma,String epitheto,String tilefwno,String dieythinsi,String foreas,int num)
{
this.onoma=onoma;
this.epitheto=epitheto;
this.tilefwno=tilefwno;
this.dieythinsi=dieythinsi;
this.foreas=foreas;
this.num=num;
}
public void SetStoixeia(String onoma,String epitheto,String tilefwno,String dieythinsi,String foreas,int num)
{
this.onoma=onoma;
this.epitheto=epitheto;
this.tilefwno=tilefwno;
this.dieythinsi=dieythinsi;
this.foreas=foreas;
this.num=num;
}
public void SetOnoma(String onoma)
{
this.onoma=onoma;
}
public void SetEpitheto(String epitheto)
{
this.epitheto=epitheto;
}
public void SetTilefwno(String tilefwno)
{
this.tilefwno=tilefwno;
}
public void SetDieythinsi(String dieythinsi)
{
this.dieythinsi=dieythinsi;
}
public void SetForeas(String foreas)
{
this.foreas=foreas;
}
public String GetOnoma()
{
return onoma;
}
public String GetEpitheto()
{
return epitheto;
}
public String GetTilefwno()
{
return tilefwno;
}
public String GetDieythinsi()
{
return dieythinsi;
}
public String GetForeas()
{
return foreas;
}
public int GetNum()
{
return num;
}
}
Last edited by LuciWiz : 20-Aug-2009 at 09:05. Reason: Please insert your Java code between [java] & [/java] tags
  #2  
Old 20-Aug-2009, 20:56
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TurboPT TurboPT is offline
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Re: Exception in thread "main" java.lang.NullPointerException

There are other missing types, so we are unable to compile for verification...

Here's what I get: (after a few other 'tweaks')
Code:
Main1.java:16: error: Type `Programma' not found in declaration of field `current'.
   static Programma current;
          ^
Main1.java:25: error: Type `Exetasi' not found in declaration of field `a'.
   static Exetasi a;
          ^
Main1.java:27: error: Type `Grammateas' not found in declaration of field `h'.
   static Grammateas h;
          ^
Main1.java:28: error: Type `Giatros' not found in declaration of field `g'.
   static Giatros g;
          ^
Main1.java:29: error: Type `Exoplismos' not found in declaration of field `exoplismos'.
   static Exoplismos exoplismos;
          ^
Main1.java:30: error: Type `Programma' not found in declaration of field `programma'.
   static Programma programma;
          ^
Main1.java:532: error: Type `Exetasi' not found in the declaration of the local variable `exetasi'.
   Exetasi exetasi = new Exetasi();
   ^
Main1.java:603: error: Type `Programma' not found in the declaration of the local variable `eggr'.
   Programma eggr = (Programma)Oin.readObject();
Anyway, the idea is to follow the callstack dump [from the bottom->up], that you provided earlier, and it should lead to the problem. Something must not be initialized, that's what the 'nullpointer' is all about.


EDIT:
Here's more information that might help following the callstack:

Note1: Remember, bottom->up, that's why the numbering, below, is reversed.
Note2: Also, my line# comments might be off, because a moderator had to edit your post, so you'll need to double check the lines in your editor.

3. at myproject.Main.epilogiastheni(Main.java:163)
Appears to be here:
JAVA Code:
private static int epilogiastheni() throws IOException
{
//...
System.out.println(a.GetNum()+"."+a.GetOnoma()+ " " +a.GetEpitheto());  // line 163 ??
//  [the 'a' object [type Exetasi] does NOT appear to be initialized at this point?]

2. at myproject.Main.allagistoixeiwn(Main.java:220)
Appears to be here:
JAVA Code:
private static void allagistoixeiwn() throws IOException
{
int asthenis = epilogiastheni(); // line 220 ??
if(asthenis == 0)

1. at myproject.Main.main(Main.java:758)
Appears to be here:
JAVA Code:
else if(epilogi==2) allagistoixeiwn(); // line 758 ??

That's the general idea about following the callstack.

Post another reply if needed.
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Last edited by TurboPT : 20-Aug-2009 at 21:39.
 
 
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