[Free] 2018(Mar) EnsurePass Passguide Oracle 1z0-808 Dumps with VCE and PDF 101-110

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Java SE 8 Programmer I

Question No: 101

You are developing a banking module. You have developed a class named ccMask that has a maskcc method.

Given the code fragment:

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You must ensure that the maskcc method returns a string that hides all digits of the credit card number except the four last digits (and the hyphens that separate each group of four digits).

Which two code fragments should you use at line n1, independently, to achieve this requirement?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B,C

Question No: 102

Given the code fragment?

public class Test {

public static void main(String[] args) { Test t = new Test();

int[] arr = new int[10]; arr = t.subArray(arr,0,2);

}

// insert code here

}

Which method can be inserted at line // insert code here to enable the code to compile?

  1. public int[] subArray(int[] src, int start, int end) { return src;

    }

  2. public int subArray(int src, int start, int end) { return src;

    }

  3. public int[] subArray(int src, int start, int end) { return src;

    }

  4. public int subArray(int[] src, int start, int end) { return src;

}

Answer: A

Question No: 103

Given the for loop construct:

for ( expr1 ; expr2 ; expr3 ) { statement;

}

Which two statements are true?

  1. This is not the only valid for loop construct; there exits another form of for loop constructor.

  2. The expression expr1 is optional. it initializes the loop and is evaluated once, as the loop begin.

  3. When expr2 evaluates to false, the loop terminates. It is evaluated only after each iteration through the loop.

  4. The expression expr3 must be present. It is evaluated after each iteration through the loop.

Answer: B,C Explanation:

The for statement have this forms: for (init-stmt; condition; next-stmt) { body

}

There are three clauses in the for statement.

The init-stmt statement is done before the loop is started, usually to initialize an iteration variable.

The condition expression is tested before each time the loop is done. The loop isn#39;t executed if the boolean expression is false (the same as the while loop).

The next-stmt statement is done after the body is executed. It typically increments an iteration variable.

Question No: 104

Given the code fragment:

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What is the result?

  1. Match 1

  2. Match 2

  3. No Match

  4. A NullPointerException is thrown at runtime.

Answer: B Explanation:

it will compare the string contents of the StringBuilder with string object.

Question No: 105

Given the fragments:

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Which line causes a compilation error?

  1. Line n1

  2. Line n2

  3. Line n3

  4. Line n4

Answer: A

Question No: 106

Given the code fragment:

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Which two modifications should you make so that the code compiles successfully?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

  5. Option E

Answer: A,C Explanation:

Add throws clause in both printFileContent and main.

Question No: 107

Given:

public class Test1 {

static void doubling (Integer ref, int pv) { ref =20;

pv = 20;

}

public static void main(String[] args) { Integer iObj = new Integer(10);

int iVar = 10; doubling(iObj , iVar );

System.out.println(iObj quot;, quot; iVar); What is the result?

A. 11, 11

B. 10, 10

C. 21, 11

D. 20, 20

E. 11, 12

Answer: A

Explanation: The code doubling(iObj , iVar ); increases both variables from to 10 to

11.

Question No: 108

Given:

interface Pet { }

class Dog implements Pet { } public class Beagle extends Dog{ }

Which three are valid?

  1. Pet a = new Dog();

  2. Pet b = new Pet();

  3. Dog f = new Pet();

  4. Dog d = new Beagle();

  5. Pet e = new Beagle();

  6. Beagle c = new Dog();

Answer: A,D,E Explanation: Incorrect:

Not B, not C: Pet is abstact, cannot be instantiated. Not F: incompatible type. Required Beagle, found Dog.

Question No: 109

Given:

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And the commands:

Javac Jump.java

Java Jump crazy elephant is always What is the result?

  1. Lazy lion is jumping

  2. Lion is always jumping

  3. Crazy elephant is jumping

  4. Elephant is always jumping

  5. Compilation fails

Answer: B

Question No: 110

Given the class definitions:

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And the code fragment of the main() method,

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What is the result?

  1. Java Java Java

  2. Java Jeve va

  3. Java Jeve ve

  4. Compilation fails

Answer: D

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