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2017 Mar 1z0-808 exam engine

Q131. Given: 

Which constructor initializes the variable x3? 

A. Only the default constructor of class X 

B. Only the no-argument constructor of class Y 

C. Only the no-argument constructor of class Z 

D. Only the default constructor of object class 

Answer:


Q132. What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class? 

A. Encapsulation 

B. Inheritance 

C. Abstraction 

D. Instantiation 

E. Polymorphism 

Answer:


Q133. Given: 

import java.util.*; 

public class Ref { 

public static void main(String[] args) { 

StringBuilder s1 = new StringBuilder("Hello Java!"); 

String s2 = s1.toString(); 

List<String> lst = new ArrayList<String>(); 

lst.add(s2); 

System.out.println(s1.getClass()); 

System.out.println(s2.getClass()); 

System.out.println(lst.getClass()); 

What is the result? 

A. class java.lang.String class java.lang.String class java.util.ArrayList 

B. class java.lang.Object class java.lang. Object class java.util.Collection 

C. class java.lang.StringBuilder class java.lang.String class java.util.ArrayList 

D. class java.lang.StringBuilder class java.lang.String class java.util.List 

Answer:

Explanation: class java.lang.StringBuilder class java.lang.String class java.util.ArrayList 


Q134. Consider following interface. 

Which of the following will create instance of Runnable type? 

A. Runnable run = 0 -> {System.out.println("Run");} 

B. Runnable run = 0 -> System.outprintlnfRun"); 

C. Runnable run = 0 > System.outprintlnfRun"); 

D. Runnable run = > System.ouLprintlnfRun"}; 

E. None of the above. 

Answer:

Explanation: 

Option A is the correct answer. 

To create we have used following method with LocalDate class; 

public static LocalDate of(intyear, int month, intdayOfMonth) 

Here we need to remember that month is not zero based so if you pass 1 for month, then 

month will be January. 

Then we have used period object of 1 day and add to date object which makes current date 

to next day, so final output is 2015-03-27. Hence option A is correct. 


Q135. You are developing a banking module. You have developed a class named ccMask that has a maskcc method. 

Given the code fragment:

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? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: B,C 


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Q136. Given the code fragment: 

What is the result? 

A. [Robb, Rick, Bran] 

B. [Robb, Rick] 

C. [Robb, Bran, Rick, Bran] 

D. An exception is thrown at runtime. 

Answer:


Q137. Given the code fragment: 

Which code fragment, when inserted at line n1, enables the App class to print Equal? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q138. Given the code fragment: 

Which option represents the state of the num array after successful completion of the outer loop? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q139. Given the code fragment: 

float x = 22.00f % 3.00f; 

int y = 22 % 3; 

System.out.print(x + ", "+ y); 

What is the result? 

A. 1.0, 1 

B. 1.0f, 1 

C. 7.33, 7 

D. Compilation fails 

E. An exception is thrown at runtime 

Answer:


Q140. Given: 

What is the result? 

A. x: 1 y: 2 

B. 3 y: 4 

C. x: 0 y: 0 

D. 3 y: 4 

E. x: 1 y: 2 

F. 0 y: 0 

G. x: 0 y: 0 

H. 0 y: 0 

Answer: