Question

2. Create a class named Student that contains the following » idStudent. The idStudent is an int variable that holds the student's matric number. name. The name field references a String object holds the student's name. . major. The major field references a String object holds the student's major. . classification. The classification field references a String object holds the student's classification level (bongsu, kecil, muda, sulung) . Constructor should accept the student's matric number, name, major and classification as arguments. These values should be assigned to the object's idStudent, name, major, and classification fields . Constructor should accept the student's matric number, name, major and classification as arguments. These values should be assigned to the object's idStudent, name, and major. The classification fields should be assigned an empty string (" "). A no-arg constructor that assigns empty strings (") to the name, major, and classification fields, and 0 in the idStudent field. Write appropriate mutator/setter methods that store values in these fields and getter/accessor methods that get values stored in these fields. Once you have written the class, write a separate program that creates four element array of Student object to hold the following data: ld Student Name 160932 167432 174123 158911 Ghazali Ali Abdul Rahman Abdul Maiid Hoo Yee An Maior Science (Statistic Engineerin Forest Computer Science Classification Muda Muda Kecil Bongsu

Answer 1

//Student.java

public class Student {

      

       // fields

       private int idStudent;

       private String name;

       private String major;

       private String classification;

      

       // defaulr constructor

       public Student()

       {

             idStudent = 0;

             name="";

             major = "";

             classification = "";

       }

      

       // parameterized constructor 1

       public Student(int idStudent, String name, String major)

       {

             this.idStudent = idStudent;

             this.name = name;

             this.major = major;

             classification = "";

       }

      

       // parameterized constructor 2

       public Student(int idStudent,String name, String major, String classification)

       {

             this.idStudent = idStudent;

             this.name = name;

             this.major = major;

             this.classification= classification;

       }

      

       // setters

       public void setIdStudent(int idStudent)

       {

             this.idStudent = idStudent;

       }

      

       public void setName(String name)

       {

             this.name =name;

       }

      

       public void setMajor(String major)

       {

             this.major = major;

       }

      

       public void setClassification(String classification)

       {

             this.classification = classification;

       }

      

       //getters

       public int getIdStudent()

       {

             return idStudent;

       }

      

       public String getName()

       {

             return name;

       }

      

       public String getMajor()

       {

             return major;

       }

      

       public String getClassification()

       {

             return classification;

       }

      

}

//end of Student.java

//MainStudent.java

public class MainStudent {

       public static void main(String[] args) {

            

             // create an array of 4 Student object

             Student students[] = new Student[4];

            

             // initialize the objects

             students[0] = new Student(160932,"Ghazal Ali","Science(Statistic)","Muda");

             students[1] = new Student(167432,"Abdul Rahman","Engineering");

             students[1].setClassification("Muda");

             students[2] = new Student();

             students[2].setIdStudent(174123);

             students[2].setName("Abdul Majid");

             students[2].setMajor("Forestry");

             students[2].setClassification("Kecil");

             students[3] = new Student(158911,"Hoo Yee An","Computer Science","Bongsu");

            

             // output the details

             for(int i=0;i<students.length;i++)

             {

                    System.out.println(students[i].getIdStudent()+" "+students[i].getName()+" "+students[i].getMajor()+" "+students[i].getClassification());

             }

       }

}

//end of MainStudent.java

Output:

160932 Ghazal Ali Science(Statistic) Muda 167432 Abdul Rahman Engineering Muda 174123 Abdul Majid Forestry 158911 Hoo Yee An Kecil Computer Science Bongsu