[Free] 2018(Jan) EnsurePass Examcollection Oracle 1z0-803 Dumps with VCE and PDF 31-40

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Java SE 7 Programmer I

Question No: 31

Given:

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  1. X XX

  2. X Y X

  3. Y Y X

  4. Y YY

    Answer: D

    Question No: 32

    Given the code fragment:

    1. ArrayListlt;Integergt; list = new ArrayListlt;gt;(1); 2. list.add(1001);

3. list.add(1002);

  1. System.out.println(list.get(list.size())); What is the result?

    1. Compilation fails due to an error on line 1.

    2. An exception is thrown at run time due to error on line 3

    3. Anexception is thrown at run time due to error on line 4

D. 1002

Answer: C Explanation:

The code compiles fine.

At runtime an IndexOutOfBoundsException is thrown when the second list item is added.

Question No: 33

Which code fragment is illegal?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: D Explanation:

The abstract keyword cannot be used to declare an int variable.

The abstract keyword is used to declare a class or method to beabstract[3]. An abstract method has no implementation; all classes containing abstract methods must themselves be abstract, although not all abstract classes have abstract methods.

Question No: 34

Given:

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Which two declarations will compile?

  1. int a, b, c = 0;

  2. int a, b, c;

  3. int g, int h, int i = 0;

  4. int d, e, F;

  5. int k, l, m; = 0;

Answer: A,D

Question No: 35

Given:

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The class is poorly encapsulated. You need to change the circle class to compute and return the area instead.

Which two modifications are necessary to ensure that the class is being properly encapsulated?

  1. Remove the area field.

  2. Change the getArea( ) method as follows:

    public double getArea ( ) { return Match.PI * radius * radius; }

  3. Add the following method:

    public double getArea ( ) {area = Match.PI * radius * radius; }

  4. Change the cacess modifier of the SerRadius ( ) method to be protected.

Answer: B,D

Question No: 36

Given:

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What is the result?

  1. Compilation fails

  2. The code compiles, but does not execute.

  3. Paildrome

  4. Wow

  5. Mom

Answer: B

Question No: 37

Given the code fragment:

Boolean b1 = true; Boolean b2 = false; int i = 0;

while (foo) { }

Which one is valid as a replacement for foo?

  1. b1.compareTo(b2)

  2. i = 1

C. i == 2? -1 : 0

D. quot;fooquot;.equals(quot;barquot;)

Answer: D Explanation:

Equals works fine on strings equals produces a Boolean value.

Question No: 38

Given:

public class TestLoop1 {

public static void main(String[] args) { int a = 0, z=10;

while (a lt; z) { a ;

-z;

}

System.out.print(a quot; : quot; z);

}

}

What is the result?

A. 5 : 5

B. 6 : 4

C. 6 : 5

D. 5 : 4

Answer: A

Question No: 39

Give:

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What is the result?

A. 1525

  1. 13

  2. Compilation fails

  3. An exception is thrown at runtime

  4. The program fails to execute due to runtime error

Answer: D

Question No: 40

Given:

public class MainMethod { void main() { System.out.println(quot;onequot;);

}

static void main(String args) { System.out.println(quot;twoquot;);

}

public static void main(String[] args) { System.out.println(quot;threequot;);

}

void mina(Object[] args) { System.out.println(quot;fourquot;);

}

}

What is printed out when the program isexcuted?

  1. one

  2. two

  3. three

  4. four

Answer: C

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