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We can pass the this keyword in the constructor also. It is useful if we have to use one object in multiple classes. Let's see the example:
![\begin{lstlisting}
class B{
A4 obj;
B(A4 obj){
this.obj=obj;
}
void di...
...ublic static void main(String args[]){
A4 a=new A4();
}
}
\end{lstlisting}](img439.svg)
The output for the above snippet will be 10.