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Q111. Given: 

public class ScopeTest { 

int j, int k; 

public static void main(String[] args) { 

ew ScopeTest().doStuff(); } 

void doStuff() { 

nt x = 5; 

oStuff2(); 

System.out.println("x"); 

void doStuff2() { 

nt y = 7; 

ystem.out.println("y"); 

or (int z = 0; z < 5; z++) { 

ystem.out.println("z"); 

ystem.out.println("y"); 

Which two items are fields? 

A. j 

B. k 

C. x 

D. y 

E. z 

Answer: A,B 


Q112. Given: 

What is the result? 

A. 120 

B. 120D 

C. A NumberFormatException will be thrown. 

D. Compilation fails due to error at line 5. 

E. Compilation tails due to error at line 8. 

Answer:

Explanation: 

At line 5, we have created a wrapper object of double by passing 120D, which is convertible to a Double, so there won't be any exception there. But if you check carefully, you can see the variable number is declared inside try block, so the scope of the variable number is limited to that block, so trying to access it outside causes a compile time error. httpsy/docs.oracle.com/javase/tutorial/iava/nutsandbolts/variables.html 


Q113. Given the code fragment: 

public class Test { 

public static void main(String[] args) { 

boolean isChecked = false; 

int arry[] = {1,3,5,7,8,9}; 

int index = arry.length; 

while ( <code1> ) { 

if (arry[index-1] % 2 ==0) { 

isChecked = true; 

<code2> 

System.out.print(arry(index]+", "+isChecked)); 

Which set of changes enable the code to print 1, true? 

A. Replacing <code1> with index > 0 and replacing <code2> with index--; 

B. Replacing <code1> with index > 0 and replacing <code2> with --index; 

C. Replacing <code1> with index > 5 and replacing <code2> with --index ; 

D. Replacing <code1> with index and replacing <code2> with --index ; 

Answer:

Explanation: 

Note: Code in B (code2 is --index;). also works fine. 


Q114. Given the code fragment: 

public static void main(String[] args) { 

int iArray[] = {65, 68, 69}; 

iArray[2] = iArray[0]; 

iArray[0] = iArray[1]; 

iArray[1] = iArray[2]; 

for (int element : iArray) { 

System.out.print(element + " "); 

A. 68, 65, 69 

B. 68, 65, 65 

C. 65, 68, 65 

D. 65, 68, 69 

E. Compilation fails 

Answer:


Q115. Given: 

And given the code fragment: 

What is the result? 

A. 4W 100 Auto 4W 150 Manual 

B. Null 0 Auto 4W 150 Manual 

C. Compilation fails only at line n1 

D. Compilation fails only at line n2 

E. Compilation fails at both line n1 and line n2 

Answer:

Explanation: 

On line n1 implicit call to parameterized constructor is missing and n2 this() must be the first line. 


Q116. 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:


Q117. Given: 

What is the result? 

A. true true 

B. true false 

C. false true 

D. false false 

E. Compilation fails 

Answer:


Q118. Given the code fragment from three files: 

Which code fragment, when inserted at line 2, enables the code to compile? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

E. Option E 

Answer:


Q119. Given: 

And the commands: 

Javac Test.java 

Java Test 12345 

What is the result? 

A. Number us : 12345 

B. A NullPointerException is thrown at runtime 

C. A NumberFormatException is thrown at runtime 

D. AnArrayIndexOutOfBoundException is thrown at runtime. 

Answer:


Q120. Which of the following can fill in the blank in this code to make it compile? 

A. abstract 

B. public 

C. default 

D. It will not compile with any as interfaces cannot have non abstract methods. 

E. It will compile without filling the blank. 

Answer:

Explanation: 

From Java SE 8, we can use static and/or default methods in interfaces, but they should be non abstract methods. SO in this case using default in blank is completely legal. Hence option C is correct. Option A is incorrect as given method is not abstract, so can't use abstract there. Options B and E are incorrect as we can't have non abstract method interface if they are not default or static. https;//docs.oraclexom/javase/tutorial/java/Iandl/defaultmethods.html