In java there is only call by value is possible. We achieve call by reference
using call by object in java. As example show below
public class CallByValueVSCallByRef {
int i=5;
void call1(int i){
i+=10;
System.out.println(“In call1 function=”+i);
}
void call2(CallByValueVSCallByRef obj){
obj.i+=10;
System.out.println(“In call1 function=”+i);
}
public static void main(String[] args) {
int i=10;
CallByValueVSCallByRef obj=new CallByValueVSCallByRef();
obj.call1(obj.i);
System.out.println(“After call call1 i=”+obj.i);
obj.call2(obj);
System.out.println(“After call call2 i=”+obj.i);
}
}
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Output:
In call1 function=15
After call call1 i=5
In call1 function=15
After call call2 i=15