Ensurepass

 

 

 

QUESTION 101

Given the code fragments:

 

clip_image002

 

What is the result?

 

A.

Super

Sub

Sub

B.

Contract

Contract

Super

C.

Compilation fails at line n1

D.

Compilation fails at line n2

 

Correct Answer: D

 

 

QUESTION 102

Given the code fragment:

 

for (int ii = 0; ii < 3;ii++) {

 

int count = 0;

 

for (int jj = 3; jj > 0; jj–) {

 

if (ii == jj) {

 

++count;

 

break;

 

}

 

}

 

System.out.print(count);

 

continue;

 

}

 

What is the result?

 

A.

011

B.

012

C.

123

D.

000

 

Correct Answer: A

 

 

QUESTION 103

Given:

 

clip_image003

 

What is result?

 

A.

Successful

B.

Unsuccessful

C.

Compilation fails

D.

An exception is thrown at runtime

 

Correct Answer: C

 

 

 

 

 

 

 

 

 

 

QUESTION 104

Given:

 

package p1;

 

public class Test {

 

static double dvalue;

 

static Test ref;

 

public static void main(String[] args) {

 

System.out.println(ref);

 

System.out.println(dvalue);

 

}

 

}

 

What is the result?

 

A.

1

2

B.

<the summary address refrenced by ref>

0.000000

C.

Null

0.0

D.

Compilation fails

E.

A NullPointerException is thrown at runtime

 

Correct Answer: C

 

 

QUESTION 105

Given:

 

public class Test {

 

public static void main(String[] args) {

 

try {

 

String[] arr =new String[4];

 

arr[1] = “Unix”;

 

arr[2] = “Linux”;

 

arr[3] = “Solarios”;

 

for (String var : arr) {

 

System.out.print(var + ” “);

}

 

} catch(Exception e) {

 

System.out.print (e.getClass());

 

}

 

}

 

}

 

What is the result?

 

A.

Unix Linux Solaris

B.

Null Unix Linux Solaris

C.

Class java.lang.Exception

D.

Class java.lang.NullPointerException

 

Correct Answer: B

Explanation:

null Unix Linux Solarios

The first element, arr[0], has not been defined.

 

 

QUESTION 106

View the exhibit.

 

clip_image005

 

Given the code fragment:

 

clip_image007

 

Which change enables the code to print the following?

 

James age: 20

 

Williams age: 32

 

A.

Replacing line 5 with public static void main (String [] args) throws MissingInfoException, AgeOutofRangeException {

B.

Replacing line 5 with public static void main (String [] args) throws.Exception {

C.

Enclosing line 6 and line 7 within a try block and adding:

catch(Exception e1) { //code goes here}

catch (missingInfoExceptione2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}

D.

Enclosing line 6 and line 7 within a try block and adding:

catch (missingInfoException e2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}

 

Correct Answer: C

 

 

QUESTION 107

Which declaration initializes a boolean variable?

 

A.

boolean h = 1;

B.

boolean k = 0;

C.

boolean m = null;

D.

boolean j = (1 < 5);

 

Correct Answer: D

Explanation:

The primitive type boolean has only two possible values: true and false. Here j is set to (1 <5), which evaluates to true.

 

 

QUESTION 108

Given the code fragment:

 

String name = “Spot”;

 

int age = 4;

 

String str =”My dog ” + name + ” is ” + age;

 

System.out.println(str);

And

 

StringBuilder sb = new StringBuilder();

 

Using StringBuilder, which code fragment is the best potion to build and print the following

 

string My dog Spot is 4

 

A.

sb.append(“My dog ” + name + ” is ” + age); System.out.println(sb);

B.

sb.insert(“My dog “).append( name + ” is ” + age); System.out.println(sb);

C.

sb.insert(“My dog “).insert( name ).insert(” is ” ).insert(age); System.out.println(sb);

D.

sb.append(“My dog “).append( name ).append(” is ” ).append(age); System.out.println(sb);

 

Correct Answer: AD

 

 

QUESTION 109

Given the code fragment:

 

clip_image009

 

A.

Super

Sub

Sub

B.

Contract

Contract

Super

C.

Compilation fails at line n1

D.

Compilation fails at line n2

 

Correct Answer: D

 

 

 

 

 

 

 

QUESTION 110

Given:

 

public class FieldInit {

 

char c;

 

booleanb;

 

float f;

 

void printAll() {

 

System.out.println(“c = ” + c);

 

System.out.println(“c = ” + b);

 

System.out.println(“c = ” + f);

 

}

 

public static void main(String[] args) {

 

FieldInit f = new FieldInit();

 

f.printAll();

 

}

 

}

 

What is the result?

 

A.

c = null

b = false

f = 0.0F

B.

c = 0

b = false

f = 0.0f

C.

c = null

b = true

f = 0.0

D.

c =

b = false

f = 0.0

 

Correct Answer: D

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