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Q1. Given:
A. ns = 50 S = 125 ns = 125 S = 125 ns = 100 S = 125
B. ns = 50 S = 125 ns = 125 S = 125 ns = 0 S = 125
C. ns = 50 S = 50 ns = 125 S = 125 ns = 100 S = 100
D. ns = 50 S = 50 ns = 125 S = 125 ns = 0 S = 125
Answer: B
Q2. Given:
What is the result?
A. 10:20
B. 0:20
C. Compilation fails at line n1
D. Compilation fails at line n2
Answer: D
Q3. Which statement will empty the contents of a StringBuilder variable named sb?
A. sb.deleteAll();
B. sb.delete(0, sb.size());
C. sb.delete(0, sb.length());
D. sb.removeAll();
Answer: C
Q4. Given:
How many objects have been created when the line / / do complex stuff is reached?
A. Two
B. Three
C. Four
D. Six
Answer: C
Q5. Given:
What is the result?
A. 10 20 30 40
B. 0 0 30 40
C. Compilation fails
D. An exception is thrown at runtime
Answer: A
Q6. Which three are advantages of the Java exception mechanism?
A. Improves the program structure because the error handling code is separated from the normal program function
B. Provides a set of standard exceptions that covers all the possible errors
C. Improves the program structure because the programmer can choose where to handle exceptions
D. Improves the program structure because exceptions must be handled in the method in which they occurred
E. Allows the creation of new exceptions that are tailored to the particular program being created
Answer: A,C,E