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INTERVIEW QUESTIONS CERTIFICATION EXAMS SUN CERTIFIED JAVA DEVELOPER DETAILS
Question :

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



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Question :

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


Answer:

Source: CoolInterview.com

C:any class in the test package
Source: CoolInterview.com




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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>; }

A. cla - Sun Certified Java Developer Interview Questions & Answers"> 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:
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D. Change line 13 to:
public Sub() { super(5); }
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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; }
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Given:
11. public static void parse(String str) {
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13. float f = Float.parseFloat(str);
14. } catch (NumberFormatException nfe) {
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20. public static void main(String[] args) {
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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
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Given:
5. class Atom {
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7. }
8. class Rock extends Atom {
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7. }
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Given:
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12. // insert code here
13. System.out.println("hi");
14. }
15. }
And the following five fragments:
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public static void main(String.* a) {
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Given:
11. public class Rainbow {
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14. private final int rgb;
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Given:
10. class Nav{
11. public enum Direction { NORTH, SOUTH, EAST, WEST }
12. }
13. public class Sprite{
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Given:
11. public class Barn {
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Given:
11. public abstract class Shape {
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14. public abstract void draw();
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Given:
1. public class Threads4 {
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4. }
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Given:
11. class PingPong2 {
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13. for(int i = 1; i < 3; i++)
14. System.out.print(n + "-" + i + " ");
15. }
16. }
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19. public static void main(String[] args) {
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21. new Thread(new Tester()).start();
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QUESTION 3
Given:
7. void waitForSignal() {
8. Object obj = new Object();
9. synchronized (Thread.currentThread()) {
10. obj.wait();
11. obj.notify();
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13. }
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F. This code does NOT compile unless "obj.wait()" is replaced with "((Thread) obj).wait()".

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Which two statements are true? (Choose two.)
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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.
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Given:
1. public class Threads2 implements Runnable {
2.
3. public void run() {
4. System.out.println("run.");
5. throw new RuntimeException("Problem");
6. }
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8. Thread t = new Thread(new Threads2());
9. t.start();
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java.lang.RuntimeException: Problem
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java.lang.RuntimeException: Problem
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run.
java.lang.RuntimeException: Problem
E. run.
java.lang.RuntimeException: Problem
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how to include the input of the output file in java script?
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What is the result of mounting a file system with thenoatimeoption enabled?
A.It enables the UFS logging
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IF you are remotely logged on to a Solaris machine, What command would you execute?
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What is native keyword and abstract keyword?
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