Question
I need help writing this java code.(No python and no C++ Just Java, the one used on textpad) A Student has a: Name - the
I need help writing this java code.(No python and no C++ Just Java, the one used on textpad)
A Student has a:
Name - the name consists of the First and Last name separated by a space.
Student Id a whole number automatically assigned in the student class Student id numbers start at 100. The numbers are assigned using a static variable in the Student class
Write the xxx_Student class
Include all instance variables
Getters and setters for instance variables
A static variable used to assign the student id starting at 100
A toString method which returns a String containing the student name and id in the format below:
Student: John Jones ID: 101
xxx_Course class
A Course has the following information (modify your Course class):
A name
An Array of Students which contains an entry for each Student enrolled in the course (allow for up to 10 students)
An integer variable which indicates the number of students currently enrolled in the course.
The Course class
Course -constructor
-courseName: String -Name of the course
-students: Student [] -An Array to store the students for the course
-numberOfStudents: int -The number of students: initialize to 0
+Course(courseName : String) +Creates a course with the specified name
+getCourseName() : String +Returns the course name
+addStudent (student : Student) : void +Adds a Student object to the array of students
+addStudent (studentName: String): void +Creates a Student object using studentName and adds it to the array
+getStudents() : Student [] +Returns the array of students
+getNumberOfStudents() : int +Returns the number of students in the array
In Eclipse: code the Course class
Create the class: Course
Write the 3 instance variables:
courseName: String
students: Student []
numberOfStudents: int
Compile after each step
In Eclipse: code the constructor
Write the constructor below which does the following:
Course (String name)
Sets courseName to name
Creates the students array of size 10
Sets number of Students to 0
Compile after each step
In Eclipse: write the 3 getters
Write the 3 getters:
+getCourseName() : String
+getStudents() : Student []
+getNumberOfStudents() : int
In Eclipse: write the 2 setters
Write the 2 setters:
addStudent (student : Student) : void
public void addStudent (Student student)
addStudent (studentName: String): void
public void addStudent (String studentName)
In Eclipse: Write toString (In bth Student and course class as well)
Return a String that contains the following information concatenated so that the information prints on separate lines as shown in the sample output:
Course: xxxxx Number Of Students: xx
The students in the class are:
Each of the Student objects in the students array followed by a so they print on separate lines
Write a class TestCourse which will
Prompt the user for the name of a Course and create a Course object
In a loop, until the user enters a q or a Q,
Prompt the user to enter student names or Q to end
For each student entered, create a Student object and add it to the Course using the addStudent method of the Course class
At the end of the loop, print the Course object. Its toString method will format the output as shown on the next slide
Sample Output
Enter the course name
CPS2231 -04
Enter the name of a student or Q to quit
Jon
Enter the name of a student or Q to quit
Mary
Enter the name of a student or Q to quit
Tom
Enter the name of a student or Q to quit
q
Course: CPS2231 -04 Number Of Students: 3
The students in the class are:
Student: Jon ID: 100
Student: Mary ID: 101
Student: Tom ID: 102
Recap: I tried to use the code from the other answer but I keep getting errors.
Here is what I have so far.
public class Student {
private String name;
private int studentID;
private static int studentIDSeq = 100;
private Date dateCreated;
public Student()
{
name = "";
studentID = studentIDSeq;
studentIDSeq++;
dateCreated = new Date();
}
public Student(String fName)
{
fullName = fName;
studentID = studentIDSeq;
studentIDSeq++;
dateCreated = new Date();
}
public String getName()
{
return name;
}
public void setlName(String fName)
{
name = fName;
}
public int getStudentID()
{
return studentID;
}
public String toString()
{
return "Student: " + name + "; ID: " + id;
}
}
------------------------------
import java.util.*;
public class Course {
// Instance variables
String courseName;
Student [] students;
int numberOfStudents;
// default constructor
Course()
{
courseName = "";
students = new Student [10];
numberOfStudents = 0;
}
// Parameter constructor
Course(String cN)
{
courseName = cN;
students = new Student [10];
numberOfStudents = 0;
}
public String getCourseName() // accessor for courseName
{
return courseName;
}
public void addStudent(Student [] student)
{
if(numberOfStudents == student.length)
{
Student newstudents [] = new Student(students.length * 2);
for(int i = 0; i < students.length; ++i)
{
newstudents[i] = students[i];
}
students = newstudents;
}
students[numberOfStudents++] = student;
}
public void addStudent (String studentName)
{
addStudent(new \Student(studentName));
}
public Student[] getStudents()
{
return students;
}
public int getNumberOfStudents()
{
return numberOfStudents;
}
public String toString()
{
String ret = "Course: " + courseName + "; Number Of Students: " + numberOfStudents + " ";
ret += "The students in the class are: ";
for(int i = 0; i < numberOfStudents; ++i) {
ret += students[i].toString() + " ";
}
return ret;
}
}
---------------------------------------
import java.util.*;
public class TestCourse {
public static void main(String[] args)
{
Scanner kb = new Scanner(System.in);
System.out.println("Enter the course name");
String name = kb.nextLine();
\Course course = new \Course(name);
while (true)
{
System.out.println("Enter the name of a student or Q to quit");
name = kb.nextLine();
if(name.equalsIgnoreCase("Q"))
{
break;
}
course.addStudent(name);
}
System.out.println(course);
}
}
--------------------------------------
As an output, I tried to type in
CPS2231 -04
And then Mary Smith
Suddenly I got an error.
How do I fix it?
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