Which statement will empty the contents of a StringBuilder variable named sb?

1. A. s
2. B. deleteAll ();
3. C. s
4. D. delete (0, s
5. E. size () );
6. F. s
7. G. delete (0, s
8. H. length () );
9. I. s
10. J. removeAll ();

Correct Answer: C

Given the code fragment:

What is the result?

1. A. Compilation fails.
2. B. 0 Found
3. C. 1 Found
4. D. 3 Found

Correct Answer: A

Given this segment of code:

Which two statements, if either were true, would make the code compile? (Choose two.)

1. A. MotorCycle is an interface that implements the Cycle class.
2. B. Cycle is an interface that is implemented by the MotorCycle class.
3. C. Cycle is an abstract superclass of MotorCycle.
4. D. Cycle and MotorCycle both extend the Transportation superclass.
5. E. Cycle and MotorCycle both implement the Transportation interface.
6. F. MotorCycle is a superclass of Cycle.

Correct Answer: BC

Which statement is true about Java byte code?

1. A. It can run on any platform.
2. B. It can run on any platform only if it was compiled for that platform.
3. C. It can run on any platform that has the Java Runtime Environment.
4. D. It can run on any platform that has a Java compiler.
5. E. It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler.

Correct Answer: D
Java bytecodes help make "write once, run anywhere" possible. You can compile your program into bytecodes on any platform that has a Java compiler. The bytecodes can then be run on any implementation of the Java VM. That means that as long as a computer has a Java VM, the same program written in the Java programming language can run on Windows 2000, a Solaris workstation, or on an iMac.

Given:

What is the result?

1. A. nullRichardDonald
2. B. RichardDonald
3. C. Compilation fails.
4. D. An ArrayIndexOutOfBoundsException is thrown at runtime.
5. E. A NullPointerException is thrown at runtime.

Correct Answer: E