Question 46 :
What an I/O filter?
An I/O filter is an object that reads from one stream and writes to another, usually altering the data in some way as it is passed from one stream to another.
Question 47 :
If an object is garbage collected, can it become reachable again?
Once an object is garbage collected, it ceases to exist. It can no longer become reachable again.
Question 48 :
What are E and PI?
E is the base of the natural logarithm and PI is mathematical value pi.
Question 49 :
Are true and false keywords?
The values true and false are not keywords.
Question 50 :
What is a void return type?
A void return type indicates that a method does not return a value.