Questions and Exercises: Variables

Questions

1. The term "instance variable" is another name for ___.

2. The term "class variable" is another name for ___.

3. A local variable stores temporary state; it is declared inside a ___.

4. A variable declared within the opening and closing parenthesis of a method signature is called a ____.

5. What are the eight primitive data types supported by the Java programming language?

6. Character strings are represented by the class ___.

7. An ___ is a container object that holds a fixed number of values of a single type.

Exercises

1. Create a small program that defines some fields. Try creating some illegal field names and see what kind of error the compiler produces. Use the naming rules and conventions as a guide.

2. In the program you created in Exercise 1, try leaving the fields uninitialized and print out their values. Try the same with a local variable and see what kind of compiler errors you can produce. Becoming familiar with common compiler errors will make it easier to recognize bugs in your code.