Practice Scope Of Variables (8.3) - Statements and Scope - ICSE 11 Computer Applications

Practice: Scope of Variables

Lesson 8.3Statements and Scope

Practise this section

8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What type of scope do variables declared inside a method have?
Show hintHide hint
Think about where the variable is accessible.
Question 2.
Can you access an instance variable from a static method?
Show hintHide hint
Consider how instance variables are tied to objects.
3Question 3.
What is the primary difference between local and instance variables?
- Local variables are shared among instances.
- Instance variables are tied to object instances while local variables are not.
- Local variables live as long as the program runs.
Show hintHide hint
Consider where each type of variable is stored.
4Question 4.
True or False: Class variables can be accessed without instantiating the class.
- True
- False
Show hintHide hint
Think about how static members of a class are referred.
Question 5.
Design a Java program that demonstrates all three scopes and illustrates their lifetime management. Describe what happens to the variables in each scope after the program execution.
Show hintHide hint
Think about the nature of variable persistence.
Question 6.
How would changing a variable from instance to class scope affect its accessibility? Provide an example along with the explanation.
Show hintHide hint
Consider the effects on all object instances.

4 more questions in this section. Enroll free to practise them all.