SQL syntax Error on Java Jersey GET CRUD operation - sql

Question

I'm trying to retrieve the information of the faculty with the students attending it and the subjects corresponding to the student.
Here is the SQL error:
java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM faculty f
inner join student_faculty sf on sf.student_id=s.user_id'
Here is the picture in line 116 the s.user_id is not on yellow color indicating something not right:
Here is it how I want it to look like:
{
"fid": "1",
"name": "Mathematcis",
"enrolled_students": [
{
"id": "student1",
"username": "user",
"full_name": "userstudent",
"subjects": [
{
"id": 1,
"name": "Programim 1"
},
{
"id": 2,
"name": "Programim 2"
},
{
"id": 3,
"name": "Calculus"
},
{
"id": 4,
"name": "Discrete mathematics"
}
]
}
]
Here is how postman shows it:
Here is my code:
public Faculty getFacultyStudent(int id) throws Exception {
Connection connection = null;
Faculty faculty = new Faculty();
Student student = new Student();
student.setSubjectList(new ArrayList<>());
faculty.setStudentList(new ArrayList<>());
try {
connection = new MysqlDbConnectionService().getConnection();
String select = "SELECT f.fid,\n" +
" f.fname,\n" +
" f.university_id,\n" +
" s.user_id,\n" +
" s.username,\n" +
" s.password,\n" +
" s.fullname,\n" +
" s.email,\n" +
" subj.id,\n" +
" subj.name,\n" +
"FROM faculty f\n" +
" inner join student_faculty sf on sf.student_id=s.user_id\n" +
" INNER JOIN student s ON sf.student_id=s.user_id\n" +
" INNER JOIN faculty_subject fs on f.fid = fs.faculty_id\n" +
" inner join subject subj on fs.subject_id = subj.id\n" +
"WHERE fid = ?;";
PreparedStatement ps = connection.prepareStatement(select);
ps.setInt(1, id);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
if(faculty.getFid()==0) {
faculty.setFid(rs.getInt("fid"));
faculty.setFname(rs.getString("fname"));
}
student.setId(rs.getString("user_id"));
student.setUsername(rs.getString("username"));
student.setPassword(rs.getString("password"));
student.setFullName(rs.getString("fullname"));
student.setEmail(rs.getString("email"));
Subject subject=new Subject();
subject.setId(rs.getInt("id"));
subject.setName(rs.getString("name"));
student.getSubjectList().add(subject);
faculty.getStudentList().add(student);
}
} catch (Exception e) {
System.out.println(e + "Retrieve not successful");
}
return faculty;
}
Faculty Class:
package com.common.db.domain;
import com.google.gson.annotations.SerializedName;
import java.util.Collections;
import java.util.List;
public class Faculty {
#SerializedName("id")
private int fid;
#SerializedName("university_id")
private int university_id;
#SerializedName("name")
private String fname;
#SerializedName("Enrolled Students:")
private List<String> studentList;
public Faculty() {
this.fid = fid;
this.university_id=university_id;
}
public void setFid(int fid)
{
this.fid = fid;
}
public int getFid()
{
return fid;
}
public void setUniversityid(int university_id)
{
this.university_id=university_id;
}
public int getUniversityid()
{
return university_id;
}
public void setFname(String fname)
{
this.fname = fname;
}
public String getFname()
{
return fname;
}
public void setStudentList(List<String> studentList) {
this.studentList = studentList;
}
public List<Object> getStudentList()
{
return Collections.singletonList(studentList);
}
}
Student Class:
package com.common.db.domain;
import com.google.gson.annotations.SerializedName;
import java.util.List;
public class Student {
#SerializedName("id")
private String id;
#SerializedName("username")
private String username;
#SerializedName("password")
private String password;
#SerializedName("fullname")
private String fullName;
#SerializedName("email")
private String email;
#SerializedName("subjects")
private List<Subject> subjectList;
public Student() {
}
public Student(String id, String username, String password, String fullName, String email) {
super();
this.id = id;
this.username = username;
this.password = password;
this.fullName = fullName;
this.email = email;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public List<Subject> getSubjectList() {
return subjectList;
}
public void setSubjectList(List<Subject> subjectList) {
this.subjectList = subjectList;
}
}
Subject Class:
package com.common.db.domain;
import com.google.gson.annotations.SerializedName;
public class Subject {
#SerializedName("id")
private int id;
#SerializedName("name")
private String name;
public Subject() {
this.id = id;
this.name=name;
}
public void setId(int id)
{
this.id=id;
}
public int getId()
{
return id;
}
public void setName(String name)
{
this.name=name;
}
public String getName()
{
return name;
}
}
Here is my ER Diagram:

Answer 1

I was reading through the code and the error and it appears to be just your sentence.
"subj.name , \n" + "FROM faculty f\n" +
That comma after the column name and before the FROM clause is causing that error.
Try to remove it and test it again