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OOPs_Lec16.java
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OOPs_Lec16.java
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import java.security.Permissions;
/*
AGENGDA: To learn about object oriented programming structure.
*/
class Pen
{
String color; //this is the class(blueprint) pen, whic basically defines the structure of pen...noow if want to use these properties, we have to create an object of this class.
String type;
public void write()
{
System.out.println("Writing");
}
}
class Student
{
String name;
int age;
public void printInfo()
{
System.out.println(this.name);
System.out.println(this.age);
}
Student() //non parameterized constructor
{
System.out.println("this is non parameterized parameter");
}
Student(String name,int age) //parameterized constructor
{
this.name=name;
this.age=age;
System.out.println(this.name);
System.out.println(this.age);
}
Student(Student stud2) //copy-constructor
{
this.name=stud2.name;
this.age=stud2.age;
}
}
public class OOPs_Lec16 {
public static void main(String[] args) {
Pen pen1=new Pen(); //class instantiated i.e., object of class pen is created.
pen1.write(); //to use any fields or methods we have to use object name with (.) symbol.
pen1.color="blue";
pen1.type="ballpoint";
System.out.println(pen1.color);
Student stud=new Student("Prakhar",19);
// stud.name="Prakhar";
// stud.age=19;
Student stud2=new Student(stud);
stud2.printInfo();
}
}