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SystemDatabase.java
65 lines (52 loc) · 1.83 KB
/
SystemDatabase.java
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import model.*;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.HashMap;
public class SystemDatabase {
private HashMap courses;
private HashMap students;
public SystemDatabase() {
readCourseData();
readStudentData();
}
private void readCourseData() {
try {
BufferedReader fileIn = new BufferedReader(new FileReader("courses.txt"));
String line = fileIn.readLine();
while (line != null) {
String[] token = line.split(",");
String cID = token[0];
String secID = token[1];
String prerequisite = token[2];
String days = token[3];
int start = Integer.parseInt(token[4]);
int end = Integer.parseInt(token[5]);
Course aCourse = new Course(cID, secID, prerequisite, days, start, end);
courses.put(cID, aCourse);
line = fileIn.readLine();
}
fileIn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private void readStudentData() {
try {
BufferedReader fileIn = new BufferedReader(new FileReader("courses.txt"));
String line = fileIn.readLine();
while (line != null) {
String[] token = line.split(",");
int sID = Integer.parseInt(token[0]);
String name = token[1];
String courseTaken = token[2];
Student aStudent = new Student(sID, name, courseTaken);
students.put(new Integer(sID), aStudent);
line = fileIn.readLine();
}
fileIn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}