Exam 1 Review

The exam will be closed book/note/web. It will be a 1-hour exam.

Topics covered on the exam will include (but are not limited to) the following:

• Java syntax
• Components of a Java class
• Elements of a method
  • Method implementation
  • Calling methods
• Statements and mathematical expressions
• Conditionals (if statements)
• Iteration (for, while, do-while)
• Arrays
• Strings

The Collections Framework will NOT be on this exam.

Here are some sample exam questions:

1. Explain the main parts of a method header.
2. Write a method that takes as input an array of integers and returns the sum of all elements in the array.
3. What is the output produced by the following code fragment:
4. String s = "1|2|3|4";
5. String[] theSplitString = s.split("2");
6. System.out.print(theSplitString);
7. A. [Ljava.lang.String;@8813f2
8. B. Error – ArrayIndexOutOfBoundsException
9. C. 1|
10. D. 3 4
11. True or False: All classes should provide getters and setters for all data members.
12. Explain the difference between == and .equals.
13. Identify at least two errors in the following class definition.
14. public class Score {
15. private String initials;
16. private int score;
18. public Score(String initials, int score) {
19. this.initials = initials;
20. score = score;
21. }
23. public String getScore() {
24. return score;
25. }
26. }