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212-055 : Sun Certified Programmer for the Java 2 Platform.SE 5.0 Exam

SUN 212-055 Questions & Answers

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SUN


212-055


Sun Certified Programmer for the Java 2 Platform.SE 5.0


https://killexams.com/pass4sure/exam-detail/212-055


  1. }

  2. }

And the invocation:

31. test(null); What is the result?


  1. An exception is thrown at runtime.

  2. "String is empty" is printed to output.

  3. Compilation fails because of au error in line 12.

  4. "String is not empty" is printed to output.


Answer: A


QUESTION: 214

Given:

  1. public static void test(String str) {

  2. int check = 4;

  3. if (check = str.length()) {

  4. System.out.print(str.charAt(check -= 1) +", ");

  5. } else {

  6. System.out.print(str.charAt(0) + ", ");

  7. }

  8. }

And the invocation:

  1. test("four");

  2. test("tee");

  3. test("to"); What is the result?


  1. r, t, t,

  2. r, e, o,

  3. Compilation fails.

  4. An exception is thrown at runtime.


Answer: C


QUESTION: 215


Given:

10. public class MyClass { 11.

  1. public Integer startingI;

  2. public void methodA() {

  3. Integer i = new Integer(25);

  4. startingI = i;

  5. methodB(i);

  6. }

  7. private void methodB(Integer i2) {

  8. i2 = i2.intValue(); 20.

  1. }

  2. }

If methodA is invoked, which two are true at line 20? (Choose two.)


  1. i2 == startingI returns true.

  2. i2 == startingI returns false.

  3. i2.equals(startingI) returns true.

  4. i2.equals(startingI) returns false.


Answer: B, C


QUESTION: 216

Given:

  1. class Cup { }

  2. class PoisonCup extends Cup { }

....

  1. public void takeCup(Cup c) {

  2. if(c instanceof PoisonCup) {

  3. System.out.println("Inconceivable!");

  4. } else if(c instanceof Cup) {

  5. System.out.println("Dizzying intellect! ");

  6. } else {

  7. System.exit(0);

  8. }

  9. }

And the execution of the statements: Cup cup = new PoisonCup(); takeCup(cup); What is the output?


  1. Inconceivable!

  2. Dizzying intellect!

  3. The code runs with no output.

  4. An exception is thrown at runtime.

  5. Compilation fails because of an error in line 22.


Answer: A


QUESTION: 217

Given:

  1. String[] elements = { "for", "tea", "too" };

  2. String first = (elements.length > 0) ? elements[0] : null; What is the result?


  1. Compilation fails.

  2. An exception is thrown at runtime.

  3. The variable first is set to null.

  4. The variable first is set to elements[0].


Answer: D


QUESTION: 218

Given:

  1. public class ClassA {

  2. public int getValue() {

  3. int value=0;

  4. boolean setting = true;

  5. String title="Hello";

  6. if (value || (setting && title == "Hello")) { return 1; }

  7. if (value == 1 & title.equals("Hello")) { return 2; }

  8. }

  9. }

And:

  1. ClassA a = new ClassA();

  2. a.getValue(); What is the result?


  1. 1

  2. 2

  3. Compilation fails.

  4. The code runs with no output.

  5. An exception is thrown at runtime.


Answer: C


QUESTION: 219

Click the Exhibit button. What is the result? Exhibit:



  1. go in Goban go in Sente go in Sente

  2. go in Sente go in Sente go in Goban

  3. go in Sente go in Goban go in Goban


  4. go in Goban go in Goban go in Sente

  5. Compilation fails because of an error in line 17.


Answer: C


QUESTION: 220

Given:

  1. public class Foo {

  2. public int a;

  3. public Foo() { a = 3; }

  4. public void addFive() { a += 5; }

  5. }

and:

  1. public class Bar extends Foo {

  2. public int a;

  3. public Bar() { a = 8; }

  4. public void addFive() { this.a +=5; }

  5. }

invoked with:

  1. Foo foo = new Bar();

  2. foo.addFive();

  3. System.out.println("Value: "+ foo.a); What is the result?


  1. Value: 3

  2. Value: 8

  3. Value: 13

  4. Compilation fails.

  5. The code runs with no output.

  6. An exception is thrown at runtime.


Answer: A


QUESTION: 221

Which of the following follows Correct Java Bean Listner rules:


  1. Listener()


  2. addMouseListener()

    updateActionListener()

  3. removeMyListener()


Answer: A, B, D


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