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Leading the way in IT testing and certification tools, www.testking.com Question No: 1 Given:
1. public class test (
2. public static void main (String args[]) { 3. int i = 0xFFFFFFF1; 4. int j = ~i; 5. 6. } 7. )
What is the decimal value of j at line 5? A. 0 B. 1 C. 14 D. –15
E. An error at line 3 causes compilation to fail. F. An error at line 4 causes compilation to fail. Answer: D
Question No: 2 Given:
Integer i = new Integer (42); Long 1 = new Long (42);
Double d = new Double (42.0);
Which two expressions evaluate to True? (Choose Two) A. (i ==1) B. (i == d) C. (d == 1) D. (i.equals (d)) E. (d.equals (i)) F. (i.equals (42)) Answer: D, E Question No: 3 Exhibit :
1. public class test ( 2. private static int j = 0; 3.
4. private static boolean methodB(int k) ( 5. j += k; 6. return true; 6. ) 7.
8. public static void methodA(int i) { 9. boolean b:
10. b = i < 10 | methodB (4); 11. b = i < 10 || methodB (8); 12. ) 13.
14. public static void main (String args[] } ( 15. methodA (0);
16. system.out.printIn(j); 17. ) 18. )
What is the result?
A. The program prints “0” B. The program prints “4” C. The program prints “8” D. The program prints “12” E. The code does not complete. Answer: B Question No: 4 Given
1. Public class test (
2. Public static void main (String args[]) ( 3. System.out.printIn (6 ^ 3); 4. ) 5. )
What is the output? Answer: 5 Question No: 5 Given:
1. public class Foo {
2. public static void main (String [] args) { 3. StringBuffer a = new StringBuffer (“A”); 4. StringBuffer b = new StringBuffer (“B”); 5. operate (a,b);
6. system.out.printIn{a + “,” +b}; 7. )
8. static void operate (StringBuffer x, StringBuffer y) { 9. x.append {y}; 10. y = x; 11. ) 12. }
What is the result?
A. The code compiles and prints “A,B”. B. The code compiles and prints “A,A”.
C. The code compiles and prints “B,B”. D. The code compiles and prints “AB,B”. E. The code compiles and prints “AB,AB”.
F. The code does not compile because “+” cannot be overloaded for StringBuffer. Answer: D
Question No: 6 Exhibit:
1. Public class test (
2. Public static void stringReplace (String text) ( 3. Text = text.replace (?j' , ?i'); 4. ) 5.
6. public static void bufferReplace (StringBuffer text) ( 7. text = text.append (“C”) 8. ) 9.
10. public static void main (String args[]} ( 11. String textString = new String (“java”);
12. StringBuffer text BufferString = new StringBuffer (“java”); 13.
14. stringReplace (textString); 15. BufferReplace (textBuffer); 16.
17. System.out.printIn (textString + textBuffer); 18. } 19. )
What is the output? Answer: javajavaC Question No: 7 Exhibit:
1. public class test {
2. public static void add3 (Integer i) } 3. int val = i.intValue ( ); 4. val += 3;
5. i = new Integer (val); 6. } 7.
8. public static void main (String args [ ] ) { 9. Integer i = new Integer (0); 10. add3 (i);
11. system.out.printIn (i.intValue ( ) ); 12. } 13. )
What is the result?
A. Compilation will fail. B. The program prints “0”. C. The program prints “3”.
D. Compilation will succeed but an exception will be thrown at line 3. Answer: B Question No: 8 Given:
1. public class ConstOver {
2. public ConstOver (int x, int y, int z) { 3. } 4. }
Which two overload the ConstOver constructor? (Choose Two) A. ConstOver ( ) { }
B. Protected int ConstOver ( ) { }
C. Private ConstOver (int z, int y, byte x) { }
D. Public Object ConstOver (int x, int y, int z) { } E. Public void ConstOver (byte x, byte y, byte z) { } Answer: A, C Question No: 9 Given:
1. public class MethodOver {
2. public void setVar (int a, int b, float c) { 3. } 4. }
Which two overload the setVar method? (Choose Two) A. Private void setVar (int a, float c, int b) { } B. Protected void setVar (int a, int b, float c) { } C. Public int setVar (int a, float c, int b) (return a;) D. Public int setVar (int a, int b, float c) (return a;) E. Protected float setVar (int a, int b, float c) (return c;) Answer: A, C Question No: 10 Given:
1. class BaseClass { 2. Private float x = 1.0f ;
3. protected float getVar ( ) ( return x;) 4. }
5. class Subclass extends BaseClass ( 6. private float x = 2.0f; 7. //insert code here 8. )
Which two are valid examples of method overriding? (Choose Two) A. Float getVar ( ) { return x;}
B. Public float getVar ( ) { return x;}
C. Float double getVar ( ) { return x;} D. Public float getVar ( ) { return x;}
E. Public float getVar (float f ) { return f;} Answer: B, D Question No: 11
Which two demonstrate an “is a” relationship? (Choose Two) A. public interface Person { }
public class Employee extends Person { } B. public interface Shape { }
public class Employee extends Shape { } C. public interface Color { }
public class Employee extends Color { } D. public class Species { }
public class Animal (private Species species;) E. interface Component { }
Class Container implements Component ( Private Component[ ] children; )
Answer: D, E Question No: 12
Which statement is true?
A. An anonymous inner class may be declared as final. B. An anonymous inner class can be declared as private.
C. An anonymous inner class can implement multiple interfaces.
D. An anonymous inner class can access final variables in any enclosing scope.
E. Construction of an instance of a static inner class requires an instance of the enclosing outer class. Answer: D
Question No 13 Given:
1. package foo; 2.
3. public class Outer (
4. public static class Inner ( 5. ) 6. )
Which statement is true?
A. An instance of the Inner class can be constructed with “new Outer.Inner ()” B. An instance of the inner class cannot be constructed outside of package foo.
C. An instance of the inner class can only be constructed from within the outer class.
D. From within the package bar, an instance of the inner class can be constructed with “new inner()” Answer: A
Question No 14