QUESTION NO: 73

　　Which two statements are true? (Choose Two)

　　A. An inner class may be declared as static.

　　B. An anonymous inner class can be declared as public.

　　C. An anonymous inner class can be declared as private.

　　D. An anonymous inner class can extend an abstract class.

　　E. An anonymous inner class can be declared as protected.

　　Answer: A, D

　　QUESTION NO: 74

　　Exhibit:

　　1. public class Mycircle {

　　2. public double radius;

　　3. public double diameter;

　　4.

　　5. public void setRadius(double radius)

　　6. this.radius = radius;

　　7. this.diameter= radius * 2;

　　8. }

　　9.

　　10. public double getRadius() {

　　11. return radius;

　　12. }

　　13. }

　　Which statement is true?

　　A. The Mycircle class is fully encapsulated.

　　B. The diameter of a given MyCircle is guaranteed to be twice its radius.

　　C. Lines 6 and 7 should be in a synchronized block to ensure encapsulation.

　　D. The radius of a MyCircle object can be set without affecting its diameter.

　　Answer: B

　　QUESTION NO: 75

　　You want to limit access to a method of a public class to members of the same class. Which

　　access

　　modifier accomplishes this objective?

　　A. Public

　　B. Private

　　C. Protected

　　D. Transient

　　E. No access modifier is required

　　Answer: B

　　QUESTION NO: 76

　　Exhibit:

　　ClassOne.java

　　1. package com.abc.pkg1;

　　2. public class ClassOne {

　　3. private char var = ‘a';

　　4. char getVar() {return var;}

　　5. }

　　ClassTest.java

　　1. package com.abc.pkg2;

　　2. import com.abc.pkg1.ClassOne;

　　3. public class ClassTest extends ClassOne {

　　4. public static void main(String[]args) {

　　5. char a = new ClassOne().getVar();

　　6. char b = new ClassTest().getVar();

　　7. }

　　8. }

　　What is the result?

　　A. Compilation will fail.

　　B. Compilation succeeds and no exceptions are thrown.

　　C. Compilation succeeds but an exception is thrown at line 5 in ClassTest.java.

　　D. Compilation succeeds but an exception is thrown at line 6 in ClassTest.java.

　　Answer: B

　　QUESTION NO: 77

　　Given:

　　1. public class ArrayTest {

　　2. public static void main (String[]args) {

　　3. float f1[], f2[];

　　4. f1 = new float [10];

　　5. f2 = f1;

　　6. System.out.printIn (“f2[0]=” + f2[0]);

　　7. }

　　8. }

　　What is the result?

　　A. It prints f2[0] = 0.0

　　B. It prints f2[0] = NaN

　　C. An error at line 5 causes compile to fail.

　　D. An error at line 6 causes compile to fail.

　　E. An error at line 6 causes an exception at runtime.

　　Answer: A

　　QUESTION NO: 78

　　Which two statements are true regarding the creation of a default constructor? (Choose Two)

　　A. The default constructor initializes method variables.

　　B. The compiler always creates a default constructor for every class.

　　C. The default constructor invokes the no-parameter constructor of the superclass.

　　D. The default constructor initializes the instance variables declared in the class.

　　E. When a class has only constructors with parameters, the compiler does not create a

　　default

　　constructor.

　　Answer: D, E

　　QUESTION NO: 79

　　Exhibit:

　　1. class super {

　　2. public int getLength() {return 4;}

　　3. }

　　4.

　　5. public class Sub extends Super {

　　6. public long getLength() {return 5;}

　　7.

　　8. public static void main (String[]args) {

　　9. super sooper = new Super ();

　　10. Sub sub = new Sub();

　　11. System.out.printIn(

　　12. sooper.getLength()+ “,” + sub.getLength() };

　　13. }

　　14. }

　　What is the output?

　　A. 4, 4

　　B. 4, 5

　　C. 5, 4

　　D. 5, 5

　　E. The code will not compile.

　　Answer: E

　　QUESTION NO: 80

　　Given:

　　1. public abstract class Test {

　　2. public abstract void methodA();

　　3.

　　4. public abstract void methodB()

　　5. {

　　6. System.out.printIn(“Hello”);

　　7. }

　　8. }

　　Which three changes (made independently) allow the code to compile? (Choose Three)

　　A. Add a method body to methodA.

　　B. Replace lines 5-7 with a semicolon (“.”)

　　C. Remove the abstract qualifier from the declaration of Test.

　　D. Remove the abstract qualifier from the declaration of methodB.

　　E. Remove the abstract qualifier from the declaration of methodA.

　　F. Remove methodB in its entirely and change class o interface in line 1.

　　Answer: B, D, F

　　QUESTION NO: 81

　　Which determines if “prefs” is a directory and exists on the file system?

　　A. Boolean exists=Directory.exists (“prefs”);

　　B. Boolean exists=(new File(“prefs”)).isDir();

　　C. Boolean exists=(new Directory(“prefs”)).exists();

　　D. Boolean exists=(new File(“prefs”)).isDirectory();

　　E. Boolean exists=true;

　　Try{

　　Directory d = new Directory(“prefs”);

　　}

　　catch (FileNotFoundException e) {

　　exists = false;

　　}

　　Answer: D

　　QUESTION NO: 82

　　Which two create an InputStream and open file the “file.txt” for reading? (Choose Two)

　　A. InputStream in=new FileReader(“file.txt”);

　　B. InputStream in=new FileInputStream(“file.txt”);

　　C. InputStream in=new InputStreamFileReader (“file.txt”, “read”);

　　D. FileInputStream in=new FileReader(new File(“file.txt”));

　　E. FileInputStream in=new FileInputStream(new File(“file.txt”));

　　Answer: B, E

　　QUESTION NO 83

　　Which two construct an OutputSream that appends to the file “file.txt”? (Choose Two)

　　A. OutputStream out=new FileOutputStream(“file.txt”);

　　B. OutputStream out=new FileOutputStream(“file.txt”, “append”);

　　C. FileOutputStream out=new FileOutputStream(“file.txt”, true);

　　D. FileOutputStream out=new FileOutputStream(new file(“file.txt”));

　　E. OutputStream out=new FileOutputStream(new File(“file.txt”)true);

　　Answer: C, E

　　QUESTION NO: 84

　　Which constructs a BufferedIputStream?

　　A. New BufferedInputStream(“in.txt”);

　　B. New BufferedInputStream(new File(“in.txt”));

　　C. New BufferedInputStream(new Writer(“in.txt”));

　　D. New BufferedInputStream(new Writer(“in.txt”));

　　E. New BufferedInputStream(new InputStream(“in.txt”));

　　F. New BufferedInputStream(new FileInputStream(“in.txt”));

　　Answer: F

　　QUESTION NO: 85

　　Which is a valid identifier?

　　A. false

　　B. default

　　C. _object

　　D. a-class

　　Answer: C

　　QUESTION NO: 86

　　Exhibit:

　　1. package foo;

　　2.

　　3. import java.util.Vector;

　　4.

　　5. private class MyVector extends Vector {

　　6. int i = 1;

　　7. public MyVector() {

　　8. i = 2;

　　9. }

　　10. }

　　11.

　　12. public class MyNewVector extends MyVector {

　　13. public MyNewVector () {

　　14. i = 4;

　　15. }

　　16. public static void main (String args []) {

　　17. MyVector v = new MyNewVector();

　　18. }

　　19. }

　　The file MyNewVector.java is shown in the exhibit.

　　What is the result?

　　A. Compilation will succeed.

　　B. Compilation will fail at line 5.

　　C. Compilation will fail at line 6.

　　D. Compilation will fail at line 14.

　　E. Compilation will fail at line 17.

　　Answer: B

　　QUESTION NO: 87

　　Given:

　　1. public class Test {

　　2. public static void main (String[]args) {

　　3. String foo = args[1];

　　4. String bar = args[2];

　　5. String baz = args[3];

　　6. System.out.printIn(“baz = ” + baz);

　　7. }

　　8. }

　　And the output:

　　Baz = 2

　　Which command line invocation will produce the output?

　　A. Java Test 2222

　　B. Java Test 1 2 3 4

　　C. Java Test 4 2 4 2

　　D. Java Test 4 3 2 1

　　Answer: C

　　QUESTION NO: 88

　　Given:

　　8. int index = 1;

　　9. String [] test = new String[3];

　　10. String foo = test[index];

　　What is the result?

　　E. Foo has the value “”

　　B. Foo has the value null

　　C. An exception is thrown

　　D. The code will not compile

　　Answer: B

　　QUESTION NO: 89

　　Given:

　　1. public interface Foo{

　　2. int k = 4;

　　3. }

　　Which three are equivalent to line 2? (Choose Three)

　　A. Final int k = 4;

　　B. Public int k = 4;

　　C. Static int k = 4;

　　D. Private int k = 4;

　　E. Abstract int k = 4;

　　F. Volatile int k = 4;

　　G. Transient int k = 4;

　　H. Protected int k = 4;

　　Answer: A, B, C

　　QUESTION NO: 90

　　Given:

　　310-025

　　Leading the way in IT testing and certification tools, www.testking.com

　　- 48 -

　　1. public class foo {

　　2. static String s;

　　3. public static void main (String[]args) {

　　4. system.out.printIn (“s=” + s);

　　5. }

　　6. }

　　What is the result?

　　A. The code compiles and “s=” is printed.

　　B. The code compiles and “s=null” is printed.

　　C. The code does not compile because string s is not initialized.

　　D. The code does not compile because string s cannot be referenced.

　　E. The code compiles, but a NullPointerException is thrown when toString is called.

　　Answer: B

　　QUESTION NO: 91

　　Which two valid declarations of a char? (Choose Two)

　　A. Char ch = “a”;

　　B. Char ch = ‘\' ‘;

　　C. Char ch = ‘cafe';

　　D. Char ch = “cafe”;

　　E. Char ch = ‘\ucafe';

　　F. Char ch = ‘\u10100';

　　G. Char ch = (char) true;

　　Answer: B, E

　　310-025

　　Leading the way in IT testing and certification tools,

　　QUESTION NO: 92

　　Given:

　　1. String foo = “blue”;

　　2. Boolean[]bar = new Boolean [1];

　　3. if (bar[0]) {

　　4. foo = “green”;

　　5. }

　　What is the result?

　　A. Foo has the value of “”

　　B. Foo has the value of null.

　　C. Foo has the value of “blue”

　　D. Foo has the value of “green”

　　E. An exception is thrown.

　　F. The code will not compile.

　　Answer: F

　　QUESTION NO: 93

　　Exhibit:

　　1. public class X {

　　2. public static void main (String[]args) {

　　3. String s1 = new String (“true”);

　　4. Boolean b1 = new Boolean (true);

　　5. if (s2.equals(b1)) {

　　6. System.out.printIn(“Equal”);

　　7. }

　　8. }

　　9. }

　　What is the result?

　　A. The program runs and prints nothing.

　　B. The program runs and prints “Equal”

　　C. An error at line 5 causes compilation to fail.

　　D. The program runs but aborts with an exception.

　　Answer: A

　　QUESTION NO: 94

　　Given:

　　1. public class Foo {

　　2. public static void main (String []args) {

　　3. int i = 1;

　　4. int j = i++;

　　5. if ((i>++j) &&(i++ ==j)) {

　　6. i +=j;

　　7. }

　　8. }

　　9. }

　　What is the final value of i?

　　A. 1

　　B. 2

　　C. 3

　　D. 4

　　E. 5

　　Answer: B

　　QUESTION NO: 95

　　Exhibit:

　　1. public class X {

　　2. public static void main (String[]args) {

　　3. string s = new string (“Hello”);

　　4. modify(s);

　　5. System.out.printIn(s);

　　6. }

　　7.

　　8. public static void modify (String s) {

　　9. s += “world!”;

　　10. }

　　11. }

　　What is the result?

　　E. The program runs and prints “Hello”

　　F. An error causes compilation to fail.

　　G. The program runs and prints “Hello world!”

　　H. The program runs but aborts with an exception.

　　Answer: A

　　QUESTION NO: 96

　　Which two are equivalent? (Choose Two)

　　A. 16>4

　　B. 16/2

　　C. 16*4

　　D. 16>>2

　　E. 16/2^2

　　F. 16>>>2

　　Answer: D, F

　　QUESTION NO: 97

　　Exhibit:

　　1. public class X {

　　2. public static void main (String[]args) {

　　3. int [] a = new int [1]

　　4. modify(a);

　　5. System.out.printIn(a[0]);

　　6. }

　　7.

　　8. public static void modify (int[] a) {

　　9. a[0] ++;

　　10. }

　　11. }

　　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 4 causes compilation to fail.

　　E. An error “possible undefined variable” at line 9 causes compilation to fail.

　　Answer: B

　　QUESTION NO: 98

　　Given:

　　13. public class Foo {

　　14. public static void main (String [] args) {

　　15. StringBuffer a = new StringBuffer (“A”);

　　16. StringBuffer b = new StringBuffer (“B”);

　　17. operate (a,b);

　　18. system.out.printIn{a + “,” +b};

　　19. )

　　20. static void operate (StringBuffer x, StringBuffer y) {

　　21. y.append {x};

　　22. y = x;

　　23. )

　　24. }

　　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: 99

　　Given:

　　1. public class X {

　　2. public static void main (String[] args) {

　　3. byte b = 127;

　　4. byte c = 126;

　　5. byte d = b + c;

　　6. }

　　7. }

　　Which statement is true?

　　A. Compilation succeeds and d takes the value 253.

　　B. Line 5 contains an error that prevents compilation.

　　C. Line 5 throws an exception indicating “Out of range”

　　D. Line 3 and 4 contain error that prevent compilation.

　　E. The compilation succeeds and d takes the value of 1.

　　Answer: B

　　QUESTION NO: 100

　　Given:

　　1. public class WhileFoo {

　　2. public static void main (String []args) {

　　3. int x= 1, y = 6;

　　4. while (y--) {x--;}

　　5. system.out.printIn(“x=” + x “y =” + y);

　　6. }

　　7. }

　　What is the result?

　　A. The output is x = 6 y = 0

　　B. The output is x = 7 y = 0

　　C. The output is x = 6 y = -1

　　D. The output is x = 7 y = -1

　　E. Compilation will fail.

　　Answer: E

　　QUESTION NO: 101

　　Which statement is true?

　　A. The Error class is a untimeException.

　　B. No exceptions are subclasses of Error.

　　C. Any statement that may throw an Error must be enclosed in a try block.

　　D. Any statement that may throw an Exception must be enclosed in a try block.

　　E. Any statement that may thro a runtimeException must be enclosed in a try block.

　　Answer: D

　　QUESTION NO: 102

　　Exhibit:

　　1. int I=1, j=0

　　2.

　　3. switch(i) {

　　4. case 2:

　　5. j+=6;

　　6.

　　7. case 4:

　　8. j+=1;

　　9.

　　10. default:

　　11. j +=2;

　　12.

　　13. case 0:

　　14. j +=4;

　　15. }

　　16.

　　What is the value of j at line 16?

　　A. 0

　　B. 1

　　C. 2

　　D. 4

　　E. 6

　　Answer: AE

　　QUESTION NO: 103

　　Given:

　　1. switch (i) {

　　2. default:

　　3. System.out.printIn(“Hello”);

　　4. )

　　What is the acceptable type for the variable i?

　　A. Byte

　　B. Long

　　C. Float

　　D. Double

　　E. Object

　　F. A and B

　　G. C and D

　　Answer: A

　　QUESTION NO: 104

　　You need to store elements in a collection that guarantees that no duplicates are stored.

　　Which two

　　interfaces provide that capability? (Choose Two)

　　A. Java.util.Map

　　B. Java.util.Set

　　C. Java.util.List

　　D. Java.util.StoredSet

　　E. Java.util.StoredMap

　　F. Java.util.Collection

　　Answer: B, D

　　QUESTION NO: 105

　　Which statement is true for the class java.util.ArrayList?

　　A. The elements in the collection are ordered.

　　B. The collection is guaranteed to be immutable.

　　C. The elements in the collection are guaranteed to be unique.

　　D. The elements in the collection are accessed using a unique key.

　　E. The elements in the collections are guaranteed to be synchronized.

　　Answer: A

　　QUESTION NO: 106

　　Exhibit:

　　1. public class X implements Runnable(

　　2. private int x;

　　3. private int y;

　　4.

　　5. public static void main(String[]args)

　　6. X that = new X();

　　7. (new Thread(that)).start();

　　8. (new Thread(that)).start();

　　9. )

　　10.

　　11. public void run() (

　　12. for (;;) (

　　13. x++;

　　14. y++;

　　15. System.out.printIn(“x=” + x + “, y = ” + y);

　　16. )

　　17. )

　　18. )

　　What is the result?

　　A. Errors at lines 7 and 8 cause compilation to fail.

　　B. The program prints pairs of values for x and y that might not always be the same on the

　　same line

　　(for example, “x=2, y=1”).

　　C. The program prints pairs of values for x and y that are always the same on the same line

　　(for

　　example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1”

　　followed by

　　“x=1, y=1”).

　　D. The program prints pairs of values for x and y that are always the same on the same line

　　(for

　　example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1,

　　y=1”

　　followed by “x=2, y=2”).

　　Answer: D

　　QUESTION NO: 107

　　Given:

　　1. public class SyncTest {

　　2. private int x;

　　3. private int y;

　　4. public synchronized void setX (int i) (x=1;)

　　5. public synchronized void setY (int i) (y=1;)

　　6. public synchronized void setXY(int 1)(set X(i); setY(i);)

　　7. public synchronized Boolean check() (return x !=y;)

　　8. )

　　Under which conditions will check () return true when called from a different class?

　　A. Check() can never return true.

　　B. Check() can return true when setXY is called by multiple threads.

　　C. Check() can return true when multiple threads call setX and setY separately.

　　D. Check() can only return true if SyncTest is changed to allow x and y to be set

　　separately.

　　Answer: A

　　QUESTION NO: 108

　　Which is a method of the MouseMotionListener interface?

　　A. Public void mouseDragged(MouseEvent)

　　B. Public boolean mouseDragged(MouseEvent)

　　C. Public void mouseDragged(MouseMotionEvent)

　　D. Public boolean MouseDragged(MouseMotionEvent)

　　E. Public boolean mouseDragged(MouseMotionEvent)

　　Answer: A

　　QUESTION NO: 109

　　Given:

　　1. String foo = “base”;

　　2. foo.substring(0,3);

　　3. foo.concat(“ket”);

　　4. foo += “ball”;

　　5.

　　Type the value of foo at line 8.

　　Answer: BASEBALL

　　QUESTION NO 110

　　Given:

　　1. public class Test {

　　2. public static void leftshift(int i, int j) {

　　3. i<<=j;

　　4. }

　　5. public static void main(String args[]) {

　　6. int i = 4, j = 2;

　　7. leftshift(i, j);

　　8. System.out.printIn(i);

　　9. }

　　10. }

　　What is the result?

　　A. 2

　　B. 4

　　C. 8

　　D. 16

　　E. The code will not compile.

　　Answer: B

　　QUESTION NO 111

　　Given:

　　1. public class Foo {

　　2. private int val;

　　3. public foo(int v) (val = v;) }

　　4. public static void main (String [] args) {

　　5. Foo a = new Foo (10);

　　6. Foo b = new Foo (10);

　　7. Foo c = a;

　　8. int d = 10;

　　9. double e = 10.0;

　　10. }

　　11. }

　　Which three logical expression evaluate to true? (Choose Three)

　　A. (a ==c)

　　B. (d ==e)

　　C. (b ==d)

　　D. (a ==b)

　　E. (b ==c)

　　F. (d ==10.0)

　　Answer: A, B, F

　　QUESTION NO 112

　　Exhibit:

　　1. public class X {

　　2. private static int a;

　　3.

　　5. public static void main (String[] args) {

　　6. modify (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. En error “possible undefined variable” at line 5 causes compilation to fail.

　　F. En error “possible undefined variable” at line 10 causes compilation to fail.

　　Answer: A

　　QUESTION NO 113

　　Exhibit:

　　1. public class Test {

　　2. public static void replaceJ(string text) {

　　3. text.replace (‘j', ‘l');

　　4. }

　　5.

　　6. public static void main(String args[]) {

　　7. string text = new String (“java”)

　　8. replaceJ(text);

　　9. system.out.printIn(text);

　　10. }

　　11. }

　　What is the result?

　　A. The program prints “lava”

　　B. The program prints “java”

　　C. An error at line 7 causes compilation to fail.

　　D. Compilation succeeds but the program throws an exception.

　　Answer: B

　　QUESTION NO 114

　　Which two are equivalent? (Choose Two)

　　A. 3/2

　　B. 3<2

　　C. 3*4

　　D. 3<<2

　　E. 3*2^2

　　F. 3<<<2

　　Answer: C, D

　　QUESTION NO 115

　　What is the numerical range of a char?

　　A. 0 . . . 32767

　　B. 0 . . . 65535

　　C. –256 . . . 255

　　D. –32768 . . . 32767

　　E. Range is platform dependent.

　　Answer: B

　　QUESTION NO 116

　　Given:

　　1. public class Test {

　　2. public static void main (String []args) {

　　3. unsigned byte b = 0;

　　4. b--;

　　5.

　　6. }

　　7. }

　　What is the value of b at line 5?

　　A. -1

　　B. 255

　　C. 127

　　D. Compilation will fail.

　　E. Compilation will succeed but the program will throw an exception at line 4.

　　Answer: D

　　QUESTION NO 117

　　Given:

　　1. public class Foo {

　　2. public void main (String [] args) {

　　3. system.out.printIn(“Hello World.”);

　　4. }

　　5. }

　　What is the result?

　　A. An exception is thrown.

　　B. The code does no compile.

　　C. “Hello World.” Is printed to the terminal.

　　D. The program exits without printing anything.

　　Answer: A

　　QUESTION NO 118

　　Given:

　　1. //point X

　　2. public class foo (

　　3. public static void main (String[]args) throws Exception {

　　4. java.io.printWriter out = new java.io.PrintWriter (

　　5. new java.io.outputStreamWriter (System.out), true;

　　6. out.printIn(“Hello”);

　　7. }

　　8. }

　　Which statement at PointX on line 1 allows this code to compile and run?

　　A. Import java.io.*;

　　B. Include java.io.*;

　　C. Import java.io.PrintWriter;

　　D. Include java.io.PrintWriter;

　　E. No statement is needed.

　　Answer: E

　　QUESTION NO 119

　　Which will declare a method that is available to all members of the same package and can be

　　referenced

　　without an instance of the class?

　　A. Abstract public void methoda();

　　B. Public abstract double methoda();

　　C. Static void methoda(double d1){}

　　D. Public native double methoda() {}

　　E. Protected void methoda(double d1) {}

　　Answer: C

　　QUESTION NO 120

　　Which type of event indicates a key pressed on a java.awt.Component?

　　A. KeyEvent

　　B. KeyDownEvent

　　C. KeyPressEvent

　　D. KeyTypedEvent

　　E. KeyPressedEvent

　　Answer: A

　　QUESTION NO 121

　　Exhibit:

　　1. import java.awt.*;

　　2.

　　3. public class X extends Frame {

　　4. public static void main (String [] args) {

　　5. X x = new X();

　　6. x.pack();

　　7. x.setVisible(true);

　　8. }

　　9.

　　10. public X() {

　　11. setLayout (new BordrLayout());

　　12. Panel p = new Panel ();

　　13. add(p, BorderLayout.NORTH);

　　14. Button b = new Button (“North”);

　　15. p.add(b):

　　16. Button b = new Button (“South”);

　　17. add(b1, BorderLayout.SOUTH):

　　18. }

　　19. }

　　Which two statements are true? (Choose Two)

　　A. The buttons labeled “North” and “South” will have the same width.

　　B. The buttons labeled “North” and “South” will have the same height.

　　C. The height of the button labeled “North” can very if the Frame is resized.

　　D. The height of the button labeled “South” can very if the Frame is resized.

　　E. The width of the button labeled “North” is constant even if the Frame is resized.

　　F. The width of the button labeled “South” is constant even if the Frame is resized.

　　Answer: B, E

　　QUESTION NO 122

　　How can you create a listener class that receives events when the mouse is moved?

　　A. By extending MouseListener.

　　B. By implementing MouseListener.

　　C. By extending MouseMotionListener.

　　D. By implementing MouseMotionListener.

　　E. Either by extending MouseMotionListener or extending MouseListener.

　　F. Either by implementing MouseMotion Listener or implementing MouseListener.

　　Answer: D

　　QUESTION NO 123

　　Which statement is true?

　　A. A grid bag layout can position components such that they span multiple rows and/or

　　columns.

　　B. The “North” region of a border layout is the proper place to locate a menuBar component

　　in a

　　Frame.

　　C. Components in a grid bag layout may either resize with their cell, or remain centered in

　　that cell at

　　their preferred size.

　　D. A border layout can be used to position a component that should maintain a constant size

　　even

　　when the container is resized.

　　Answer: A

　　QUESTION NO 124

　　You want a class to have access to members of another class in the same package. Which is

　　the most

　　restrictive access modifier that will accomplish that will accomplish this objective?

　　A. Public

　　B. Private

　　C. Protected

　　D. Transient

　　E. No access modifier is required.

　　Answer: E

　　QUESTION NO 125

　　Which two statements are true regarding the creation of a default constructor? (Choose Two)

　　A. The default constructor initializes method variables.

　　B. The default constructor invokes the no-parameter constructor of the superclass.

　　C. The default constructor initializes the instance variables declared in the class.

　　D. If a class lacks a no-parameter constructor,, but has other constructors, the compiler

　　creates a

　　default constructor.

　　E. The compiler creates a default constructor only when there are no other constructors for

　　the class.

　　Answer: C, E

　　QUESTION NO 126

　　Given:

　　1. public class OuterClass {

　　2. private double d1 1.0;

　　3. //insert code here

　　4. }

　　You need to insert an inner class declaration at line2. Which two inner class declarations

　　are valid?

　　(Choose Two)

　　A. static class InnerOne {

　　public double methoda() {return d1;}

　　}

　　B. static class InnerOne {

　　static double methoda() {return d1;}

　　}

　　C. private class InnerOne {

　　public double methoda() {return d1;}

　　}

　　D. protected class InnerOne {

　　static double methoda() {return d1;}

　　}

　　E. public abstract class InnerOne {

　　public abstract double methoda();

　　}

　　Answer: C, E

　　QUESTION NO 127

　　Which two declarations prevent the overriding of a method? (Choose Two)

　　A. Final void methoda() {}

　　B. Void final methoda() {}

　　C. Static void methoda() {}

　　D. Static final void methoda() {}

　　E. Final abstract void methoda() {}

　　Answer: A, D

　　QUESTION NO 128

　　Given:

　　1. public class Test {

　　2. public static void main (String args[]) {

　　3. class Foo {

　　4. public int i = 3;

　　5. }

　　6. Object o = (Object) new Foo();

　　7. Foo foo = (Foo)o;

　　8. System.out.printIn(foo. i);

　　9. }

　　10. }

　　What is the result?

　　A. Compilation will fail.

　　B. Compilation will succeed and the program will print “3”

　　C. Compilation will succeed but the program will throw a ClassCastException at line 6.

　　D. Compilation will succeed but the program will throw a ClassCastException at line 7.

　　Answer: B

　　QUESTION NO 129

　　Which two create an instance of an array? (Choose Two)

　　A. int[] ia = new int [15];

　　B. float fa = new float [20];

　　C. char[] ca = “Some String”;

　　D. Object oa = new float[20];

　　E. Int ia [][] = (4, 5, 6) (1, 2, 3)

　　Answer: A, D

　　QUESTION NO 130

　　Given:

　　1. public class ExceptionTest {

　　2. class TestException extends Exception {}

　　3. public void runTest () throws TestException {}

　　4. public void test () /* Point X*/ {

　　5. runTest ();

　　6. }

　　7. }

　　At point X on line 4, which code can be added to make the code compile?

　　A. Throws Exception.

　　B. Catch (Exception e).

　　C. Throws RuntimeException.

　　D. Catch (TestException e).

　　E. No code is necessary.

　　Answer: B

　　QUESTION NO 131

　　Exhibit:

　　1. public class SwitchTest {

　　2. public static void main (String []args) {

　　3. System.out.PrintIn(“value =” +switchIt(4));

　　4. }

　　5. public static int switchIt(int x) {

　　6. int j = 1;

　　7. switch (x) {

　　8. case 1: j++;

　　9. case 2: j++;

　　10. case 3: j++;

　　11. case 4: j++;

　　12. case 5: j++;

　　13. default:j++;

　　14. }

　　15. return j + x;

　　16. }

　　17. }

　　What is the output from line 3?

　　A. Value = 3

　　B. Value = 4

　　C. Value = 5

　　D. Value = 6

　　E. Value = 7

　　F. Value = 8

　　Answer: F

　　QUESTION NO 132

　　Which four types of objects can be thrown using the throw statement? (Choose Four)

　　A. Error

　　B. Event

　　C. Object

　　D. Exception

　　E. Throwable

　　F. RuntimeException

　　Answer: A, D, E, F

　　QUESTION NO 133

　　Given:

　　1. public class ForBar {

　　2. public static void main(String []args) {

　　3. int i = 0, j = 5;

　　4. tp: for (;;) {

　　5. i ++;

　　6. for(;;)

　　7. if(i >--j) break tp;

　　8. }

　　9. system.out.printIn(“i = ” + i + “, j = “+ j);

　　10. }

　　11. }

　　What is the result?

　　A. The program runs and prints “i=1, j=0”

　　B. The program runs and prints “i=1, j=4”

　　C. The program runs and prints “i=3, j=4”

　　D. The program runs and prints “i=3, j=0”

　　E. An error at line 4 causes compilation to fail.

　　F. An error at line 7 causes compilation to fail.

　　Answer: A

　　QUESTION NO 134

　　Which two can directly cause a thread to stop executing? (Choose Two)

　　A. Exiting from a synchronized block.

　　B. Calling the wait method on an object.

　　C. Calling the notify method on an object.

　　D. Calling the notifyAll method on an object.

　　E. Calling the setPriority method on a thread object.

　　Answer: B, E

　　QUESTION NO 135

　　Given:

　　1. public class Foo implements Runnable (

　　2. public void run (Thread t) {

　　3. system.out.printIn(“Running.”);

　　4. }

　　5. public static void main (String[] args) {

　　6. new thread (new Foo()).start();

　　7. )

　　8. )

　　What is the result?

　　A. An exception is thrown.

　　B. The program exists without printing anything.

　　C. An error at line 1 causes compilation to fail.

　　D. An error at line 6 causes the compilation to fail.

　　E. “Running” is printed and the program exits.

　　Answer: C

　　QUESTION NO 136

　　Which constructs a DataOutputStream?

　　A. New dataInputStream(“in.txt”);

　　B. New dataInputStream(new file(“in.txt”));

　　C. New dataInputStream(new writer(“in.txt”));

　　D. New dataInputStream(new FileWriter(“in.txt”));

　　E. New dataInputStream(new InputStream(“in.txt”));

　　F. New dataInputStream(new FileInputStream(“in.txt”));

　　Answer: F

　　QUESTION NO 137

　　Which can be used to decode charS for output?

　　A. Java.io.InputStream.

　　B. Java.io.EncodedReader.

　　C. Java.io.InputStreamReader.

　　D. Java.io.InputStreamWriter.

　　E. Java.io.BufferedInputStream.

　　Answer: C

　　QUESTION NO 138

　　Given:

　　1. public class Test {

　　2. public static void main (String [] args) {

　　3. string foo = “blue”;

　　4. string bar = foo;

　　5. foo = “green”;

　　6. System.out.printIn(bar);

　　7. }

　　8. }

　　What is the result?

　　A. An exception is thrown.

　　B. The code will not compile.

　　C. The program prints “null”

　　D. The program prints “blue”

　　E. The program prints “green”

　　Answer: D

　　QUESTION NO 139

　　Which code determines the int value foo closest to a double value bar?

　　A. Int foo = (int) Math.max(bar);

　　B. Int foo = (int) Math.min(bar);

　　C. Int foo = (int) Math.abs(bar);

　　D. Int foo = (int) Math.ceil(bar);

　　E. Int foo = (int) Math.floor(bar);

　　F. Int foo = (int) Math.round(bar);

　　Answer: F

　　QUESTION NO 140

　　Which two demonstrate encapsulation of data? (Choose Two)

　　A. Member data have no access modifiers.

　　B. Member data can be modified directly.

　　C. The access modifier for methods is protected.

　　D. The access modifier to member data is private.

　　E. Methods provide for access and modification of data.

　　Answer: D, E

　　QUESTION NO 141

　　Exhibit:

　　1. class A {

　　2. public String toString () {

　　3. return “4”;

　　4. }

　　5. }

　　6. class B extends A {

　　7. 8. public String toString () {

　　8. return super.toString() + “3”;

　　9. }

　　10. }

　　11. public class Test {

　　12. public static void main(String[]args) {

　　13. System.out.printIn(new B());

　　14. }

　　15. }

　　What is the result?

　　A. Compilation succeeds and 4 is printed.

　　B. Compilation succeeds and 43 is printed.

　　C. An error on line 9 causes compilation to fail.

　　D. An error on line 14 causes compilation to fail.

　　E. Compilation succeeds but an exception is thrown at line 9.

　　Answer: B

　　QUESTION NO 142

　　Which two statements are true? (Choose Two)

　　A. An anonymous inner class can be declared inside of a method

　　B. An anonymous inner class constructor can take arguments in some situation.

　　C. An anonymous inner class that is a direct subclass that is a direct subclass of Object

　　can implement

　　multiple interfaces.

　　D. Even if a class Super does not implement any interfaces, it is still possible to define

　　an anonymous

　　inner class that is an immediate subclass of Super that implements a single interface.

　　E. Event if a class Super does not implement any interfaces, it is still possible to define

　　an anonymous

　　inner class that is an immediate subclass of Super that implements multiple interfaces.

　　Answer: A, B

　　QUESTION NO 143

　　Given:

　　1. public class MethodOver {

　　2. private int x, y;

　　3. private float z;

　　4. public void setVar(int a, int b, float c){

　　5. x = a;

　　6. y = b;

　　7. z = c;

　　8. }

　　9. }

　　Which two overload the setVar method? (Choose Two)

　　A. void setVar (int a, int b, float c){

　　x = a;

　　y = b;

　　z = c;

　　}

　　B. public void setVar(int a, float c, int b) {

　　setVar(a, b, c);

　　}

　　C. public void setVar(int a, float c, int b) {

　　this(a, b, c);

　　}

　　D. public void setVar(int a, float b){

　　x = a;

　　z = b;

　　}

　　E. public void setVar(int ax, int by, float cz) {

　　x = ax;

　　y = by;

　　z = cz;

　　}

　　Answer: B, D

　　QUESTION NO 144

　　Which statements about static inner classes are true? (Choose Two)

　　A. A static inner class requires a static initializer.

　　B. A static inner class requires an instance of the enclosing class.

　　C. A static inner class has no reference to an instance of the enclosing class.

　　D. A static inner class has access to the non-static members of the outer class.

　　E. Static members of a static inner class can be referenced using the class name of the

　　static inner

　　class.

　　Answer: C, E

　　QUESTION NO 145

　　Given:

　　1. public class X {

　　2. public object m () {

　　3. object o = new float (3.14F);

　　4. object [] oa = new object [1];

　　5. oa[0]= o;

　　6. o = null;

　　7. oa[0] = null;

　　9. return o;

　　9. }

　　10. }

　　When is the float object created in line 3, eligible for garbage collection?

　　A. Just after line 5.

　　B. Just after line 6.

　　C. Just after line 7.

　　D. Just after line 8(that is, as the method returns).

　　Answer: C

　　QUESTION NO 146

　　Which two interfaces provide the capability to store objects using a key-value pair? (Choose

　　Two)

　　A. Java.util.Map.

　　B. Java.util.Set.

　　C. Java.util.List.

　　D. Java.util.StoredSet.

　　E. Java.util.StoredMap.

　　F. Java.util.Collection.

　　Answer: A, E

　　QUESTION NO 147

　　Which interface does java.util.Hashable implement?

　　A. Java.util.Map.

　　B. Java.util.List.

　　C. Java.util.Hashable.

　　D. Java.util.Collection.

　　Answer: A