![I wrote a function to read through all of the students in a students.txt file and add it to an arraylist
of that type. It works smooth but it's not adding the last student in the file to the arraylist. can u
help me fix my code so that 10 out of 10 students are added to an arraylist of type student?
Here is my code
public static ArrayList<Student> readDataFromFile(String fName)
throws FileNotFoundException{
ArrayList<Student> result = new ArrayList<>();
Scanner fileRdr = new Scanner(new File(fName));
String name = fileRdr.nextLine();
int sId = Integer.parseInt(fileRdr.nextLine());
int birthYr = Integer.parseInt(fileRdr.nextLine());
boolean sciMajor = Boolean.parseBoolean(fileRdr.nextLine());
ArrayList<Course> crseAL = new ArrayList<>();
String lineRead = fileRdr.nextLine();
while(fileRdr.hasNextLine()){
String [] data = lineRead.split(",");
Course c = new Course(data[0],data[1],Integer.parseInt(data[2]),data[3],data[4]);
crseAL.add(c);
lineRead = fileRdr.nextLine();
//You've read all courses for a particular student
if(lineRead.equals("")){//line empty
Student s = new Student(name,sId,birthYr,sciMajor);
s.setSchedule(crseAL);
result.add(s);
//read student info for next student
name = fileRdr.nextLine();
sId = Integer.parseInt(fileRdr.nextLine());
birthYr = Integer.parseInt(fileRdr.nextLine());
sciMajor = Boolean.parseBoolean(fileRdr.nextLine());
crseAL = new ArrayList<>();
lineRead = fileRdr.nextLine();
}
Here is the student.txt
Michael West
900753
2003](https://image.slidesharecdn.com/iwroteafunctiontoreadthroughallofthestudentsina-230321083320-31216bb1/85/I-wrote-a-function-to-read-through-all-of-the-students-in-a-pdf-1-320.jpg)
Recommended
More Related Content
More from adianantsolutions
More from adianantsolutions (20)
Recently uploaded
Recently uploaded (20)
I wrote a function to read through all of the students in a .pdf
- 1. I wrote a function to read through all of the students in a students.txt file and add it to an arraylist of that type. It works smooth but it's not adding the last student in the file to the arraylist. can u help me fix my code so that 10 out of 10 students are added to an arraylist of type student? Here is my code public static ArrayList<Student> readDataFromFile(String fName) throws FileNotFoundException{ ArrayList<Student> result = new ArrayList<>(); Scanner fileRdr = new Scanner(new File(fName)); String name = fileRdr.nextLine(); int sId = Integer.parseInt(fileRdr.nextLine()); int birthYr = Integer.parseInt(fileRdr.nextLine()); boolean sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); ArrayList<Course> crseAL = new ArrayList<>(); String lineRead = fileRdr.nextLine(); while(fileRdr.hasNextLine()){ String [] data = lineRead.split(","); Course c = new Course(data[0],data[1],Integer.parseInt(data[2]),data[3],data[4]); crseAL.add(c); lineRead = fileRdr.nextLine(); //You've read all courses for a particular student if(lineRead.equals("")){//line empty Student s = new Student(name,sId,birthYr,sciMajor); s.setSchedule(crseAL); result.add(s); //read student info for next student name = fileRdr.nextLine(); sId = Integer.parseInt(fileRdr.nextLine()); birthYr = Integer.parseInt(fileRdr.nextLine()); sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); crseAL = new ArrayList<>(); lineRead = fileRdr.nextLine(); } Here is the student.txt Michael West 900753 2003
- 2. TruE Art Appreciation,1090,3,sync,T Data Structures,2735,5,online,MWF Calculus,1070,4,in-person,MTWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Festus Park 900846 2000 False Art Appreciation,1090,3,sync,T Intro to CS,1724,4,in-person,MWTF Statistics,2010,3,Online,MWF Personal Finance,1070,3,online,TBD Africa and the World,2090,3,sync,WF Ahmed Nord 900963 2004 true Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Tasha Ohlder 900102 1994 true Intro to Sociology,1010,3,async,MW Data Structures,2735,5,online,MWF Statistics,2020,4,online,MWRF Personal Finance,1070,3,online,TBD Intro to Theology,1080,3,async,WF Earl Mint 900159 2003 false Calculus,1070,4,online,MTWF Intro to CS,1724,4,in-person,MWTF
- 3. Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR English Composition,2010,3,online,MWF Katie Easton 900951 2000 false Discrete Structs,2550,3,online,TR Intro to CS,1724,4,in-person,MWTF Intro to Karate,1040,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Kennedy Dotson 900237 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF Personal Finance,1070,3,online,TBD Nick Peoples 900856 2001 False Intro to Sociology,1010,3,online,MW Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Olivia Priest 900123 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF Macro Economics,2020,3,sync,TW Personal Finance,1070,3,online,TBD Rashad Black
- 4. 900456 2001 False Intro to Sociology,1010,3,online,MW Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD How Things Work,1010,3,async,WF Here is my code public static ArrayList<Student> readDataFromFile(String fName) throws FileNotFoundException{ ArrayList<Student> result = new ArrayList<>(); Scanner fileRdr = new Scanner(new File(fName)); String name = fileRdr.nextLine(); int sId = Integer.parseInt(fileRdr.nextLine()); int birthYr = Integer.parseInt(fileRdr.nextLine()); boolean sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); ArrayList<Course> crseAL = new ArrayList<>(); String lineRead = fileRdr.nextLine(); while(fileRdr.hasNextLine()){ String [] data = lineRead.split(","); Course c = new Course(data[0],data[1],Integer.parseInt(data[2]),data[3],data[4]); crseAL.add(c); lineRead = fileRdr.nextLine(); //You've read all courses for a particular student if(lineRead.equals("")){//line empty Student s = new Student(name,sId,birthYr,sciMajor); s.setSchedule(crseAL); result.add(s); //read student info for next student name = fileRdr.nextLine(); sId = Integer.parseInt(fileRdr.nextLine()); birthYr = Integer.parseInt(fileRdr.nextLine()); sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); crseAL = new ArrayList<>(); lineRead = fileRdr.nextLine(); }
- 5. public static ArrayList<Student> readDataFromFile(String fName) throws FileNotFoundException{ ArrayList<Student> result = new ArrayList<>(); Scanner fileRdr = new Scanner(new File(fName)); String name = fileRdr.nextLine(); int sId = Integer.parseInt(fileRdr.nextLine()); int birthYr = Integer.parseInt(fileRdr.nextLine()); boolean sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); ArrayList<Course> crseAL = new ArrayList<>(); String lineRead = fileRdr.nextLine(); while(fileRdr.hasNextLine()){ String [] data = lineRead.split(","); Course c = new Course(data[0],data[1],Integer.parseInt(data[2]),data[3],data[4]); crseAL.add(c); lineRead = fileRdr.nextLine(); //You've read all courses for a particular student if(lineRead.equals("")){//line empty Student s = new Student(name,sId,birthYr,sciMajor); s.setSchedule(crseAL); result.add(s); //read student info for next student
- 6. name = fileRdr.nextLine(); sId = Integer.parseInt(fileRdr.nextLine()); birthYr = Integer.parseInt(fileRdr.nextLine()); sciMajor = Boolean.parseBoolean(fileRdr.nextLine()); crseAL = new ArrayList<>(); lineRead = fileRdr.nextLine(); } Here is the student.txt Michael West 900753 2003 TruE Art Appreciation,1090,3,sync,T Data Structures,2735,5,online,MWF Calculus,1070,4,in-person,MTWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Festus Park 900846 2000 False Art Appreciation,1090,3,sync,T Intro to CS,1724,4,in-person,MWTF Statistics,2010,3,Online,MWF Personal Finance,1070,3,online,TBD Africa and the World,2090,3,sync,WF Ahmed Nord 900963 2004 true
- 7. Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Tasha Ohlder 900102 1994 true Intro to Sociology,1010,3,async,MW Data Structures,2735,5,online,MWF Statistics,2020,4,online,MWRF Personal Finance,1070,3,online,TBD Intro to Theology,1080,3,async,WF Earl Mint 900159 2003 false Calculus,1070,4,online,MTWF Intro to CS,1724,4,in-person,MWTF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR English Composition,2010,3,online,MWF Katie Easton 900951 2000 false Discrete Structs,2550,3,online,TR Intro to CS,1724,4,in-person,MWTF Intro to Karate,1040,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Kennedy Dotson 900237 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF
- 8. Personal Finance,1070,3,online,TBD Nick Peoples 900856 2001 False Intro to Sociology,1010,3,online,MW Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Olivia Priest 900123 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF Macro Economics,2020,3,sync,TW Personal Finance,1070,3,online,TBD Rashad Black 900456 2001 False Intro to Sociology,1010,3,online,MW Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD How Things Work,1010,3,async,WF Michael West 900753 2003 TruE Art Appreciation,1090,3,sync,T Data Structures,2735,5,online,MWF
- 9. Calculus,1070,4,in-person,MTWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Festus Park 900846 2000 False Art Appreciation,1090,3,sync,T Intro to CS,1724,4,in-person,MWTF Statistics,2010,3,Online,MWF Personal Finance,1070,3,online,TBD Africa and the World,2090,3,sync,WF Ahmed Nord 900963 2004 true Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR
- 10. Tasha Ohlder 900102 1994 true Intro to Sociology,1010,3,async,MW Data Structures,2735,5,online,MWF Statistics,2020,4,online,MWRF Personal Finance,1070,3,online,TBD Intro to Theology,1080,3,async,WF Earl Mint 900159 2003 false Calculus,1070,4,online,MTWF Intro to CS,1724,4,in-person,MWTF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR English Composition,2010,3,online,MWF Katie Easton 900951
- 11. 2000 false Discrete Structs,2550,3,online,TR Intro to CS,1724,4,in-person,MWTF Intro to Karate,1040,3,in-person,MWF Personal Finance,1070,3,online,TBD Health Ethics,2080,3,async,TR Kennedy Dotson 900237 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF Personal Finance,1070,3,online,TBD Nick Peoples 900856 2001 False Intro to Sociology,1010,3,online,MW
- 12. Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD Olivia Priest 900123 1999 True Intro to Philosophy,1070,3,online,TR Data Structures,2735,5,online,MWF Intro to Data Science,1070,4,in-person,MWF Macro Economics,2020,3,sync,TW Personal Finance,1070,3,online,TBD Rashad Black 900456 2001 False Intro to Sociology,1010,3,online,MW Intro to CS,1724,4,in-person,MWTF Intro to Tennis,1000,3,in-person,MWF Personal Finance,1070,3,online,TBD How Things Work,1010,3,async,WF