Can not read excel file in javafx when it converted to JAR - excel

Question

I am using Apache POI for reading excel file (in xls and xlsx format).
It runs fine in IDE (I am using IntelliJ), but when I make the project to JAR, it can't read the excel file. I tried by giving full path of excel file, but not working.
File name spelling is right, file is not protected or read only format. Everything is good until I run JAR.
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source)
at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/apache/poi/hssf/usermodel/HSSFWorkbook
at TakeInput.Take(TakeInput.java:25)
at MainGUI.main(MainGUI.java:53)
... 11 more
Caused by: java.lang.ClassNotFoundException: org.apache.poi.hssf.usermodel.HSSFWorkbook
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 13 more
Exception running application MainGUI
Here is my TakeInput Class:
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import java.io.*;
import java.util.Arrays;
import java.util.Comparator;
import java.util.StringTokenizer;
public class TakeInput {
public void Take() throws Exception{
System.out.println("Inside TakeInput class..");
File f = new File("courses.xls");
FileInputStream fs = new FileInputStream(f);
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFSheet sheet = wb.getSheetAt(0);
int CSECourseCounter=0;
for(int i=0;i<=sheet.getLastRowNum();i++){
String tempCode = sheet.getRow(i).getCell(0).getStringCellValue();
StringTokenizer tok = new StringTokenizer(tempCode);
String codeTok=tok.nextToken();
if(codeTok.equals("CSE") || codeTok.equals("CSI")) {
CSECourseCounter++;
}
}
CourseInfo[] courses = new CourseInfo[CSECourseCounter];
for(int i=0;i<CSECourseCounter;i++)
courses[i]=new CourseInfo();
System.out.println(sheet.getLastRowNum());
for(int i=0,j=0;i<=sheet.getLastRowNum();i++){
String tempCode = sheet.getRow(i).getCell(0).getStringCellValue();
StringTokenizer tok = new StringTokenizer(tempCode);
String codeTok=tok.nextToken();
if(codeTok.equals("CSE") || codeTok.equals("CSI")) {
courses[j].code = sheet.getRow(i).getCell(0).getStringCellValue();
courses[j].title = sheet.getRow(i).getCell(1).getStringCellValue();
courses[j].section = sheet.getRow(i).getCell(2).getStringCellValue();
courses[j].day = sheet.getRow(i).getCell(4).getStringCellValue();
courses[j].time = sheet.getRow(i).getCell(5).getStringCellValue();
//courses[i].room = sheet.getRow(i).getCell(6).getNumericCellValue();
//System.out.println(courses[j].code);
j++;
//CSECourseCounter++;
}
}
Arrays.sort(courses, new Comparator<CourseInfo>() {
#Override
public int compare(CourseInfo o1, CourseInfo o2) {
return o1.title.compareTo(o2.title);
}
});
System.out.println("CSE courses = "+CSECourseCounter);
for(int i=0;i<CSECourseCounter;i++){
courses[i].setCampus();
courses[i].setLabCLassAndTimeSlot();
courses[i].setDay();
}
//***************************** CourseInfo to a linked list ******************
for(int i=0;i<courses.length;i++){
CourseToLinkedList temp = AddSearchCourse.searchCourse(courses[i].code);
if(temp==null) {
AddSearchCourse.addCourse(courses[i].title,courses[i].code,courses[i].islabClass);
CourseToLinkedList temp1 = AddSearchCourse.searchCourse(courses[i].code);
temp1.addSections(courses[i].code,courses[i].title,courses[i].section,courses[i].day,courses[i].time,
courses[i].timeStart,courses[i].timeEnd,courses[i].room,
courses[i].faculty,courses[i].credit,courses[i].assigned,
courses[i].campus,courses[i].dept,courses[i].islabClass,
courses[i].timeSlot,courses[i].labTimeSlot,courses[i].day1,courses[i].day2
);
}
else{
CourseToLinkedList temp1 = AddSearchCourse.searchCourse(courses[i].code);
temp1.addSections(courses[i].code,courses[i].title,courses[i].section,courses[i].day,courses[i].time,
courses[i].timeStart,courses[i].timeEnd,courses[i].room,
courses[i].faculty,courses[i].credit,courses[i].assigned,
courses[i].campus,courses[i].dept,courses[i].islabClass,
courses[i].timeSlot,courses[i].labTimeSlot,courses[i].day1,courses[i].day2
);
}
}
System.out.println("outside try catch..");
}
}
I put a copy of this excel file which is in the project folder to that folder where JAR file situated. No problem with location.

Answer 1

As I can see the logs, this issue may happen because of dependency jars for your code. try to add the jar(may be 'jakarta-poi-version.jar') having class 'HSSFWorkbook' into your class path and then try to run it again.