CoolInterview.com - World's Largest Collection of Interview Questions & Answers, FAQs, queries, sample papers, exam papers, dumps, what, why, how, where, when questions
Interview Success Kit - Get Success in Job Interviews Interview Success Kit - 30,000 Interview Que. & Ans.
Covers 30,000+ Interview Questions asked in actual MNC Interviews - all with model answers.

Sponsored Links

Interview Questions
Our Services

INTERVIEW QUESTIONS CERTIFICATION EXAMS SUN CERTIFIED JAVA DEVELOPER DETAILS
Question :
Given:
5. class Building { }
6. public class Barn extends Building {
7. public static void main(String[] args) {
8. Building build1 = new Building();
9. Barn barn1 = new Barn();
10. Barn barn2 = (Barn) build1;
11. Object obj1 = (Object) build1;
12. String str1 = (String) build1;
13. Building build2 = (Building) barn1;
14. }
15. }
Which is true?
A. If line 10 is removed, the compilation succeeds.
B. If line 11 is removed, the compilation succeeds.
C. If line 12 is removed, the compilation succeeds.
D. If line 13 is removed, the compilation succeeds.
E. More than one line must be removed for compilation to succeed.


Category Sun Certified Java Developer Interview Questions
Rating (4.6) By 18 users
Added on 7/20/2015
Views 53
Rate it!


Answers:

Source: CoolInterview.com

C: If line 12 is removed, the compilation succeeds.
Source: CoolInterview.com



If you have the better answer, then send it to us. We will display your answer after the approval.
Rules to Post Answers in CoolInterview.com:-

  • There should not be any Spelling Mistakes.
  • There should not be any Gramatical Errors.
  • Answers must not contain any bad words.
  • Answers should not be the repeat of same answer, already approved.
  • Answer should be complete in itself.
  • Name :*
    Email Id :*
    Answer :*
    Verification Code Code Image - Please contact webmaster if you have problems seeing this image code Not readable? Load New Code
    Process Verification Enter the above shown code: *
    Inform me about updated answers to this question

    Related Questions
    View Answer
    QUESTION 21
    Given:
    11. abstract class Vehicle { public int speed() { return 0; }
    12. class Car extends Vehicle { public int speed() { return 60; }
    13. class RaceCar extends Car { public int speed() { return 150; } ...
    21. RaceCar racer = new RaceCar();
    22. Car car = new RaceCar();
    23. Vehicle vehicle = new RaceCar();
    24. System.out.println(racer.speed() + ", " + car.speed()
    25. + ", " + vehicle.speed());
    What is the result?
    A. 0, 0, 0
    B. 150, 60, 0
    C. Compilation fails.
    D. 150, 150, 150
    E. An exception is thrown at runtime.

    View Answer
    Given:
    1. package test;
    2.
    3. class Target {
    4. public String name = "hello";
    5. }
    What can directly access and change the value of the variable name?
    A. any class
    B. only the Target class
    C. any class in the test package
    D. any class that extends Target

    View Answer
    Which Man class properly represents the relationship "Man has a best friend who is a Dog"?
    A. class Man extends Dog { }
    B. class Man implements Dog { }
    C. class Man { private BestFriend dog; }
    D. class Man { private Dog bestFriend; }
    E. class Man { private Dog<bestFriend>; }
    F. class Man { private BestFriend<dog>; }

    View Answer
    Given:
    1. class Super {
    2. private int a;
    3. protected Super(int a) { this.a = a; }
    4. }
    ...
    11. class Sub extends Super {
    12. public Sub(int a) { super(a); }
    13. public Sub() { this.a = 5; }
    14. }
    Which two, independently, will allow Sub to compile? (Choose two.)
    A. Change line 2 to:
    public int a;
    B. Change line 2 to:
    protected int a;
    C. Change line 13 to:
    public Sub() { this(5); }
    D. Change line 13 to:
    public Sub() { super(5); }
    E. Change line 13 to:
    public Sub() { super(a); }

    View Answer
    Given:
    1. public class Blip {
    2. protected int blipvert(int x) { return 0; }
    3. }
    4. class Vert extends Blip {
    5. // insert code here
    6. }
    Which five methods, inserted independently at line 5, will compile? (Choose five.)
    A. public int blipvert(int x) { return 0; }
    B. private int blipvert(int x) { return 0; }
    C. private int blipvert(long x) { return 0; }
    D. protected long blipvert(int x) { return 0; }
    E. protected int blipvert(long x) { return 0; }
    F. protected long blipvert(long x) { return 0; }
    G. protected long blipvert(int x, int y) { return 0; }

    View Answer
    Given:
    11. public static void parse(String str) {
    12. try {
    13. float f = Float.parseFloat(str);
    14. } catch (NumberFormatException nfe) {
    15. f = 0;
    16. } finally {
    17. System.out.println(f);
    18. }
    19. }
    20. public static void main(String[] args) {
    21. parse("invalid");
    22. }
    What is the result?
    A. 0.0
    B. Compilation fails.
    C. A ParseException is thrown by the parse method at runtime.
    D. A NumberFormatException is thrown by the parse method at runtime.

    View Answer
    Given:
    1. interface TestA { String toString(); }
    2. public class Test {
    3. public static void main(String[] args) {
    4. System.out.println(new TestA() {
    5. public String toString() { return "test"; }
    6. });
    7. }
    8. }
    What is the result?
    A. test
    B. null
    C. An exception is thrown at runtime.
    D. Compilation fails because of an error in line 1.
    E. Compilation fails because of an error in line 4.
    F. Compilation fails because of an error in line 5.

    View Answer
    Given:
    5. class Atom {
    6. Atom() { System.out.print("atom "); }
    7. }
    8. class Rock extends Atom {
    9. Rock(String type) { System.out.print(type); }
    10. }
    11. public class Mountain extends Rock {
    12. Mountain() {
    13. super("granite ");
    14. new Rock("granite ");
    15. }
    16. public static void main(String[] a) { new Mountain(); }
    17. }
    What is the result?
    A. Compilation fails.
    B. atom granite
    C. granite granite
    D. atom granite granite
    E. An exception is thrown at runtime.
    F. atom granite atom granite

    View Answer
    Given:
    11. class Mud {
    12. // insert code here
    13. System.out.println("hi");
    14. }
    15. }
    And the following five fragments:
    public static void main(String...a) {
    public static void main(String.* a) {
    public static void main(String... a) {
    public static void main(String[]... a) {
    public static void main(String...[] a) {
    How many of the code fragments, inserted independently at line 12, compile?
    A. 0
    B. 1
    C. 2
    D. 3
    E. 4
    F. 5
    View Answer
    Given:
    11. public class Rainbow {
    12. public enum MyColor {
    13. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff);
    14. private final int rgb;
    15. MyColor(int rgb) { this.rgb = rgb; }
    16. public int getRGB() { return rgb; }
    17. };
    18. public static void main(String[] args) {
    19. // insert code here
    20. }
    21. }
    Which code fragment, inserted at line 19, allows the Rainbow class to compile?
    A. MyColor skyColor = BLUE;
    B. MyColor treeColor = MyColor.GREEN;
    C. if(RED.getRGB() < BLUE.getRGB()) { }
    D. Compilation fails due to other error(s) in the code.
    E. MyColor purple = new MyColor(0xff00ff);
    F. MyColor purple = MyColor.BLUE + MyColor.RED;

    View Answer
    Given:
    10. class Nav{
    11. public enum Direction { NORTH, SOUTH, EAST, WEST }
    12. }
    13. public class Sprite{
    14. // insert code here
    15. }
    Which code, inserted at line 14, allows the Sprite class to compile?
    A. Direction d = NORTH;
    B. Nav.Direction d = NORTH;
    C. Direction d = Direction.NORTH;
    D. Nav.Direction d = Nav.Direction.NORTH;
    View Answer
    Given:
    11. public class Barn {
    12. public static void main(String[] args) {
    13. new Barn().go("hi", 1);
    14. new Barn().go("hi", "world", 2);
    15. }
    16. public void go(String... y, int x) {
    17. System.out.print(y[y.length - 1] + " ");
    18. }
    19. }
    What is the result?
    A. hi hi
    B. hi world
    C. world world
    D. Compilation fails.
    E. An exception is thrown at runtime.

    View Answer
    Given:
    11. public abstract class Shape {
    12. private int x;
    13. private int y;
    14. public abstract void draw();
    15. public void setAnchor(int x, int y) {
    16. this.x = x;
    17. this.y = y;
    18. }
    19. }
    Which two classes use the Shape class correctly? (Choose two.)
    A. public class Circle implements Shape {
    private int radius;
    }
    B. public abstract class Circle extends Shape {
    private int radius;
    }
    C. public class Circle extends Shape {
    private int radius;
    public void draw();
    }
    D. public abstract class Circle implements Shape { private int radius;
    public void draw();
    }
    E. public class Circle extends Shape {
    private int radius;
    public void draw() {/* code here */}
    F. public abstract class Circle implements Shape { private int radius;
    public void draw() { /* code here */ }

    View Answer
    Given:
    1. public class Threads4 {
    2. public static void main (String[] args) {
    3. new Threads4().go();
    4. }
    5. public void go() {
    6. Runnable r = new Runnable() {
    7. public void run() {
    8. System.out.print("foo");
    9. }
    10. };
    11. Thread t = new Thread(r);
    12. t.start();
    13. t.start();
    14. }
    15. }
    What is the result?
    A. Compilation fails.
    B. An exception is thrown at runtime.
    C. The code executes normally and prints "foo".
    D. The code executes normally, but nothing is printed.

    View Answer
    Given:
    11. class PingPong2 {
    12. synchronized void hit(long n) {
    13. for(int i = 1; i < 3; i++)
    14. System.out.print(n + "-" + i + " ");
    15. }
    16. }
    17. public class Tester implements Runnable {
    18. static PingPong2 pp2 = new PingPong2();
    19. public static void main(String[] args) {
    20. new Thread(new Tester()).start();
    21. new Thread(new Tester()).start();
    22. }
    23. public void run() { pp2.hit(Thread.currentThread().getId()); }
    24. }
    Which statement is true?
    A. The output could be 5-1 6-1 6-2 5-2
    B. The output could be 6-1 6-2 5-1 5-2
    C. The output could be 6-1 5-2 6-2 5-1
    D. The output could be 6-1 6-2 5-1 7-1

    View Answer
    QUESTION 3
    Given:
    7. void waitForSignal() {
    8. Object obj = new Object();
    9. synchronized (Thread.currentThread()) {
    10. obj.wait();
    11. obj.notify();
    12. }
    13. }
    Which statement is true?
    A. This code can throw an InterruptedException.
    B. This code can throw an IllegalMonitorStateException.
    C. This code can throw a TimeoutException after ten minutes.
    D. Reversing the order of obj.wait() and obj.notify() might cause this method to complete normally.
    E. A call to notify() or notifyAll() from another thread might cause this method to complete normally.
    F. This code does NOT compile unless "obj.wait()" is replaced with "((Thread) obj).wait()".

    View Answer
    Which two statements are true? (Choose two.)
    A. It is possible for more than two threads to deadlock at once.
    B. The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
    C. Deadlocked threads release once their sleep() method's sleep duration has expired.
    D. Deadlocking can occur only when the wait(), notify(), and notifyAll() methods are used incorrectly.
    E. It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
    F. If a piece of code is capable of deadlocking, you cannot eliminate the possibility of deadlocking by inserting
    invocations of Thread.yield().

    View Answer
    Given:
    1. public class Threads2 implements Runnable {
    2.
    3. public void run() {
    4. System.out.println("run.");
    5. throw new RuntimeException("Problem");
    6. }
    7. public static void main(String[] args) {
    8. Thread t = new Thread(new Threads2());
    9. t.start();
    10. System.out.println("End of method.");
    11. }
    12. }
    Which two can be results? (Choose two.)
    A. java.lang.RuntimeException: Problem
    B. run.
    java.lang.RuntimeException: Problem
    C. End of method.
    java.lang.RuntimeException: Problem
    D. End of method.
    run.
    java.lang.RuntimeException: Problem
    E. run.
    java.lang.RuntimeException: Problem
    End of method.

    View Answer
    how to include the input of the output file in java script?
    View Answer
    What is the result of mounting a file system with thenoatimeoption enabled?
    A.It enables the UFS logging
    B.It disables the update of file access times
    C.It prevents the creation of files larger than 2Gbytes
    D.It prevents the user from updating the file modification times
    View Answer

    Please Note: We keep on updating better answers to this site. In case you are looking for Jobs, Pls Click Here Vyoms.com - Best Freshers & Experienced Jobs Website.

    View ALL Sun Certified Java Developer Interview Questions & Answers

    User Options
    India News Network

    Latest 20 Questions
    Which one is the feature of Marshall's definition? a)Limited ends b)Scarce means c)Study of wealth as well as study of man d)Study of allocation of resources
    What will be the shape of PPC curve when marginal opportunity cost is constant? a)Concave b)Convex c)Backward bending d)Straight line
    A developed economy uses_____ technique in production. a)Labour intensive b)Capital intensive c)Home-based d)Traditional
    Micro economics is also known as_______: a)Public economics b)Price theory c)Income theory d)Demand theory
    Economic problem arises when: a)When wants are unlimited b)Resources are limited c)Alternative uses of resources d)All of the above
    Journal records the transactions of the firm in a: a) Analytical manner b) Chronological manner c) Periodical manner d) Summarized manner
    Capital of business is Rs. 75,000 and liability is Rs. 25,000 then total assets of business would be: a) Rs. 1,00,000 b) Rs. 15,000 c) Rs. 75,000 d) Rs. 50,000
    In which of the following cases, accounting estimates are needed? a) Employee benefit obligations b) Impairment of losses c) Inventory obsolescence d) All of the above
    What is the difference between a regular bitmap and a nine-patch image?
    What is portable wi-fi hotspot?
    What is a Sticky Intent?
    What are the core components under the Android application architecture?
    When is the best time to kill a foreground activity?
    What is a Fragment?
    What data types are supported by AIDL?
    What is AIDL?
    When does ANR occur?
    ___________ appear as a footnote below the balance sheet. a) Fictitious Assets b) Contingent Liabilities c) Current Liabilities d) Current Assets
    What is the importance of Default Resources?
    Contingent liability if becomes probable then it is _________ a) Provided in the books of A/c b) Provided in Director's report c) Shown in notes to accounts d) None of these



    Fresher Jobs | Experienced Jobs | Government Jobs | Walkin Jobs | Company Profiles | Interview Questions | Placement Papers | Companies In India | Consultants In India | Colleges In India | Exams In India | Latest Results | Notifications In India | Call Centers In India | Training Institutes In India | Job Communities In India | Courses In India | Jobs by Keyskills | Jobs by Functional Areas

    Testing Articles | Testing Books | Testing Certifications | Testing FAQs | Testing Downloads | Testing Interview Questions | Testing Jobs | Testing Training Institutes

    Gate Articles | Gate Books | Gate Colleges | Gate Downloads | Gate Faqs | Gate Jobs | Gate News | Gate Sample Papers | Gate Training Institutes

    MBA Articles | MBA Books | MBA Case Studies | MBA Business Schools | MBA Current Affairs | MBA Downloads | MBA Events | MBA Notifications | MBA FAQs | MBA Jobs
    MBA Job Consultants | MBA News | MBA Results | MBA Courses | MBA Sample Papers | MBA Interview Questions | MBA Training Institutes

    GRE Articles | GRE Books | GRE Colleges | GRE Downloads | GRE Events | GRE FAQs | GRE News | GRE Training Institutes | GRE Sample Papers

    IAS Articles | IAS Books | IAS Current Affairs | IAS Downloads | IAS Events | IAS FAQs | IAS News | IAS Notifications | IAS UPSC Jobs | IAS Previous Question Papers
    IAS Results | IAS Sample Papers | IAS Interview Questions | IAS Training Institutes | IAS Toppers Interview

    SAP Articles | SAP Books | SAP Certifications | SAP Companies | SAP Study Materials | SAP Events | SAP FAQs | SAP Jobs | SAP Job Consultants
    SAP Links | SAP News | SAP Sample Papers | SAP Interview Questions | SAP Training Institutes |




    Copyright ©2003-2016 CoolInterview.com, All Rights Reserved.
    Privacy Policy | Terms and Conditions



    Cache = 0.753906 Seconds