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Q81. Given: 

public class TestLoop { 

public static void main(String[] args) { 

int array[] = {0, 1, 2, 3, 4}; 

int key = 3; 

for (int pos = 0; pos < array.length; ++pos) { 

if (array[pos] == key) { 

break; 

System.out.print("Found " + key + "at " + pos); 

What is the result? 

A. Found 3 at 2 

B. Found 3 at 3 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:

Explanation: The following line does not compile: System.out.print("Found " + key + "at " + pos); 

The variable pos is undefined at this line, as its scope is only valid in the for loop. Any variables created inside of a loop are LOCAL TO THE LOOP. 


Q82. Consider 

Integer number = Integer.valueOff 808.1"); 

Which is true about the above statement? 

A. The value of the variable number will be 808.1 

B. The value of the variable number will be 808 

C. The value of the variable number will be 0. 

D. A NumberFormatException will be throw. 

E. It will not compile. 

Answer:

Explanation: 

The Integer class value of 0 returns an Integer from given string. But we need to pass string which has correct format for integer otherwise it will throw a NumberFormatException. In this case we have passed string which is not an integer value (since what we passed is fractional number), so option D is correct. 


Q83. Given the following code for a Planet object: 

What is the output? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

E. Option E 

Answer:


Q84. Given: 

package p1; 

public interface DoInterface { 

void method1(int n1); // line n1 

package p3; 

import p1.DoInterface; 

public class DoClass implements DoInterface { 

public DoClass(int p1) { } 

public void method1(int p1) { } // line n2 

private void method2(int p1) { } // line n3 

public class Test { 

public static void main(String[] args) { 

DoInterface doi= new DoClass(100); // line n4 

doi.method1(100); 

doi.method2(100); 

Which change will enable the code to compile? 

A. Adding the public modifier to the declaration of method1 at line n1 

B. Removing the public modifier from the definition of method1 at line n2 

C. Changing the private modifier on the declaration of method 2 public at line n3 

D. Changing the line n4 DoClass doi = new DoClass ( ); 

Answer:

Explanation: Private members (both fields and methods) are only accessible inside the class they are declared or inside inner classes. private keyword is one of four access modifier provided by Java and its a most restrictive among all four e.g. public, default(package), protected and private. 

Read more: http://javarevisited.blogspot.com/2012/03/private-in-java-why-should-you-always.html#ixzz3Sh3mOc4D 


Q85. Given the code fragment: 

What is the result? 

A. A B C Work done 

B. A B C D Work done 

C. A Work done 

D. Compilation fails 

Answer:


Up to date 1z0-808 vce:

Q86. Given the code fragment: 

What is the result? 

A. Element 0 Element 1 

B. Null element 0 Null element 1 

C. Null Null 

D. A NullPointerException is thrown at runtime. 

Answer:


Q87. Which statement is true about Java byte code? 

A. It can run on any platform. 

B. It can run on any platform only if it was compiled for that platform. 

C. It can run on any platform that has the Java Runtime Environment. 

D. It can run on any platform that has a Java compiler. 

E. It can run on any platform only if that platform has both the Java Runtime Environment and a Java compiler. 

Answer:


Q88. Which statement best describes encapsulation? 

A. Encapsulation ensures that classes can be designed so that only certain fields and methods of an object are accessible from other objects. 

B. Encapsulation ensures that classes can be designed so that their methods are inheritable. 

C. Encapsulation ensures that classes can be designed with some fields and methods declared as abstract. 

D. Encapsulation ensures that classes can be designed so that if a method has an argument MyType x, any subclass of MyType can be passed to that method. 

Answer:


Q89. Given the code fragment: 

What is the result? 

A. true true 

B. true false 

C. false false 

D. false true 

Answer:


Q90. Given: 

public class Test { 

public static void main(String[] args) { 

int day = 1; 

switch (day) { 

case "7": System.out.print("Uranus"); 

case "6": System.out.print("Saturn"); 

case "1": System.out.print("Mercury"); 

case "2": System.out.print("Venus"); 

case "3": System.out.print("Earth"); 

case "4": System.out.print("Mars"); 

case "5": System.out.print("Jupiter"); 

Which two modifications, made independently, enable the code to compile and run? 

A. Adding a break statement after each print statement 

B. Adding a default section within the switch code-block 

C. Changing the string literals in each case label to integer 

D. Changing the type of the variable day to String 

E. Arranging the case labels in ascending order 

Answer: A,C 

Explanation: The following will work fine: 

public class Test { 

public static void main(String[] args) { 

int day = 1; 

switch (day) { 

case 7: System.out.print("Uranus"); break; 

case 6: System.out.print("Saturn"); break; 

case 1: System.out.print("Mercury"); break; 

case 2: System.out.print("Venus"); break; 

case 3: System.out.print("Earth"); break; 

case 4: System.out.print("Mars"); break; 

case 5: System.out.print("Jupiter"); break;