package package2;

class Student {
    int studentId;
    String name;

    public Student(int studentId, String name) {
        this.studentId = studentId;
        this.name = name;
    }

    public void print(int maths2, int english2, int studentId2){
        // int studentId;
        studentId = studentId2;
        int java = 10;
        class Marks{
            int maths1, english1, java1;
            public Marks() {
                english1 = english2;
                maths1 = maths2;
                // java1 = java;
            }
            public void printData(){
                System.out.println("Student Id: "+studentId);
                System.out.println("Student Name: "+name);
                System.out.println("Mathematics Marks: "+maths1);
                System.out.println("English Marks: "+english1);
            }
        }
        Marks mrk = new Marks();
        mrk.printData();
        java = java + 2;
        studentId = studentId + 2;
        System.out.println(studentId);
        System.out.println(java);
    }
}

public class MainClass {

    public static void main(String[] args) {
        Student st = new Student(1, "Siddharth");
        st.print(78, 89, 12);
    }

}


class Student {
    int studentId;
    class Marks {
        int maths;
        int english;

        public Marks(int studentId, int maths, int english) {
            Student.this.studentId = studentId;
            this.maths = maths;
            this.english = english;
        }

        class Grade {
            char gradeEnglish;
            char gradeMaths;

            public Grade(int studentId, char gradeEnglish, char gradeMaths){
                Student.this.studentId = studentId;
                this.gradeEnglish = gradeEnglish;
                this.gradeMaths = gradeMaths;
            }
        }
    }
}

public class MainClass {

    public static void main(String[] args) {
        Student st = new Student();
        Student.Marks mrk = st.new Marks(1, 33, 90);
        System.out.println("=========First Declaration=========");
        System.out.println("Student Id: "+st.studentId);
        System.out.println("Marks in English: "+mrk.english);
        System.out.println("Marks in Mathematics: "+mrk.maths);
        Student.Marks mrk2 = st.new Marks(4, 98, 70);
        System.out.println("=========Second Declaration=========");
        System.out.println("Student Id: "+st.studentId);
        System.out.println("Marks in English: "+mrk2.english);
        System.out.println("Marks in Mathematics: "+mrk2.maths);
        Student.Marks.Grade grd = mrk.new Grade(5, 'A', 'C');
        System.out.println("=========Third Declaration=========");
        System.out.println("Student Id: "+st.studentId);
        System.out.println("Grade in English: "+grd.gradeEnglish);
        System.out.println("Grade in Mathematics: "+grd.gradeMaths);
    }

}


package package1;

class Student {
    int a;
    int b;
    public Student(int a, int b){
        this.a = a;
        this.b = b;
    }

    public void print(){
        System.out.println(a+b);
    }
}
public class MainClass {

    public static void main(String[] args) {
        Student st;
        try {
            st = Student.class.newInstance();
            st.print();
        }catch (Exception e) {
            e.printStackTrace();
        }
    }

}