🚀 Programming Example
this() constructor call, Real Utilization
Learn this program step-by-step with algorithm, source code, output and detailed explanation.
class Studentclass{
int rollno;
String name,course;
float age;
Studentclass(int rollno,String name,String course){
this.rollno=rollno;
this.name=name;
this.course=course;
}
Studentclass(int rollno,String name,String course,float age){
this(rollno,name,course);//reusing constructor
this.age=age;
}
void display(){
System.out.println(rollno+" "+name+" "+course+" "+age);
}
}
class MainClassOfStudent{
public static void main(String args[]){
Studentclass obj1=new Studentclass(111,"RAHIM","C");
Studentclass obj2=new Studentclass(112,"RAM","java",21.5f);
obj1.display();
obj2.display();
}
}
/* The this() constructor call should be used to reuse the constructor
from the constructor. It maintains the chain between the constructors
i.e. it is used for constructor chaining. Let's see the example given
below that displays the actual use of this keyword.
*/
111 RAHIM C 0.0
112 RAM java 21.5
Press any key to continue . . .
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.