class First{
Second obj;
First(Second obj){
this.obj=obj;
}
void display(){
System.out.println(obj.data);//using data member of Second class
}
}
class Second{
int data=10;
Second(){
First b=new First(this);
b.display();
}
public static void main(String args[]){
Second a=new Second();
}
}
/*
We can pass the this keyword in the constructor also.
It is useful if we have to use one object in multiple classes.
*/
10
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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.