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Sun Certified Web Component Developer for the Java 2 Platform, Enterprise Edition 1.4

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310 -081

QUESTION NO: 1 Given: AnInterface is an interface. AnAdapter0 is a non-abstract, non-final class with a zero argument constructor. An Adapterl is a non-abstract, non-final class without a zero argument constructor, but with a constructor that takes one int argument. Which two construct an anonymous inner class? (Choose two.) A. AnAdapter1 aa = new AnAdapter1 () {} B. AnAdapter0 aa = new AnAdapter0 () {} C. AnAdapter0 aa = new AnAdapter0 (5) {} D. AnAdapter1 aa = new AnAdapter1 (5) {} E. AnInterface ai = new Anlnterface (5)) { Answer: BD

QUESTION NO: 2 1. class A { 3. public String to String() { 4. return “4”; 5. } 6. } 7. class B extends A { 8. public String toString() { 9. return super.toString() + “3”; 10. } 11. } 12. public class Test { 13. public static void main (String[] args) { 14. System.out.printIn(new B()); 15. } 16. } What is the result? A. Compilation succeeds and 4 is printed. B. Compilation …………… is printed. C. An error on line 9 cause compilation to fail. D. An error on line 14 cause compilation to fail. E. Compilation succeeds but an exception is thrown at line 9. Leading the way in©IT testing and certification tools, www.testking.com WWW.REAL-EXAMS.NET -3-

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Answer: B

QUESTION NO: 3 Given: 1. public class Method Over { 2. public void set Var (int a, int b, float c) { 3. } 4. } Which two overload the set Var method? (Choose two.) A. private void set Var(int a, float c, int b) {} B. protected void set Var(int a, int b, float c) {} C. public int set Var(int a, float c, int b) {return a:} D. public int set Var(int a, int b, float c) {return a:} E. protected float set Var(int a, int b, float c) {return c:} Answer: AC

QUESTION NO: 4 1. class A { 2. public byte file Number () { 3. return l; 4. } 5. } 6. 7. Class B extends A { 8. public short getNumber() { 9. return 2; 10. } 11. 12. public short getNumber() { 13. B b = new B(); 14. System.out.printIn(b.getNumber()); 15. } 16. } What is the result? Leading the way in©IT testing and certification tools, www.testking.com WWW.REAL-EXAMS.NET -4-

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A. Compilation succeeds and l is printed. B. Compilation succeeds and 2 printed. C. An error at line 8 cause compilation to fail. D. An error at line 14 cause complication to fail. E. Complication succeeds but an exception is thrown at line 14. Answer: C

QUESTION NO: 5 Given: 1. public class Foo { 2. public static void main(String[] args) { 3. StringBuffer a = new StringBuffer(“A”); 4. StrinbBuffer b = new StringBuffer(“B”); 5. operate (a, b); 6. System.out.printIn(a + “,” + b): 7. } 8. static void operate (StringBuffer x, StringBuffer y) { 9. y.append(x); 10. y = x; 11. } 12. } What is the result? A. The code compiles and prints “A,B”. B. The code compiles and prints “A,BA”. C. The code compiles and prints “AB,B”. D. The code compiles and prints “AB,AB”. E. The code compiles and prints “BA,BA”. F. The code does not compile because “+” cannot be overloaded for StringBuffer. Answer: B

QUESTION NO: 6 1. public class X { 2. private static int a: 3. Leading the way in©IT testing and certification tools, www.testking.com WWW.REAL-EXAMS.NET -5-

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310 -081 4. public static void main (String [] args) { 5. modify (a) : 6. System.out.printIn(a) { 7. } 8. 9. public static void modify (int a) { 10. a++; 11. } 12. } What is the result? A. The program runs and prints “0” B. The program runs and prints “1” C. The program runs but aborts with an exception. D. An error “possible undefined variable” at line 5 cause compilation to fail. E. An error “possible undefined variable” at line 10 cause compilation to fail. Answer: A

QUESTION NO: 7 1. public class Test { 2. private static int j = 0; 3. 4. public static Boolean method B (int k) { 5. j + = k; 6. return true: 7. } 8. 9. public static void method A (int i) { 10. Boolean b; 11. b = I < 10 | method b (4): 12. b = I < 10 || methodb(8): 13. } 14. 15. public static void main (String args []) { 16. method A (0); 17. System.out.printIn(i); 18. } 19. } What is the result? Leading the way in©IT testing and certification tools, www.testking.com WWW.REAL-EXAMS.NET -6-

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