অধ্যায় ৪ঃ ক্লাস, অবজেক্ট, মেথড ও কনস্ট্রাক্টর

 class Student
{
int Roll;
String Name;
float Mark;
public Student() //Constructor Method
{
Roll=96004;
Name="Munny";
Mark=84.751;
System.out.println("Roll is: '+Roll);

System.out.println("Name is :"+Name);
System.out.println("Mark is :"+Mark):
}
}
public class cons
}
public static void main(String args[])
{
Student s=new Student():
}
}

class Student
{
int Roll;
String Name;
float Mark; Student(int R, String N, float M) //Argumented Constructor Method
{
Roll-R:
Name N;
Mark-M;
}
Student (Students) //Copy Constructor
{
Roll-s Roll; //Copy Constructor Define
Names.Name;
Mark-s.Mark;
}
void Display()
{
System.out.println("Roll is :"+Roll); System.out.println("Name is :+Name);
System.out.println("Mark is :"+Mark);
public class copy
}
}
public static void main(String args[])
{
Student s1=new Student(101, "Tonny",65.231);
}
System.out.println("Record of S1");
$1.Display();
System.out.printin();

Student s2=new Student(s1); //Copy Constructor
System.out.println("Record of S2");
$2.Display();
System.out.println("Both are same...");
}
}