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Q71. Given the following code fragment: 

10. 

p1 = paths.get("report.txt"); 

11. 

p2 = paths.get("company"); 

12. 

/ / insert code here 

Which code fragment, when inserted independently at line 12, move the report.txt file to the company directory,at the same level, replacing the file if it already exists? 

A. Files.move(p1, p2, StandardCopyOption.REPLACE_EXISTING, 

StandardCopyOption.ATOMIC_MOVE); 

B. Files.move(p1, p2, StandardCopyOption.REPLACE_Existing, 

LinkOption.NOFOLLOW_LINKS); 

C. Files.move(p1, p2, StandardCopyOption.REPLACE_EXISTING, 

LinkOption.NOFOLLOW_LINKS); 

D. Files.move(p1, p2, StandardCopyOption.REPLACE_EXISTING, 

StandardCopyOption.copy_ATTRIBUTES, 

StandrardCopyOp) 

E. Files.move (p1, p2, StandardCopyOption.REPLACE_EXISTING, 

StandardCopyOption.copy_ATTRIBUTES, 

LinkOption.NOF) 

Answer: A,C 

Explanation: 

Moving a file is equally as straight forward move(Path source, Path target, CopyOption... options); The available StandardCopyOptions enums available are: StandardCopyOption.REPLACE_EXISTING StandardCopyOption.ATOMIC_MOVE If Files.move is called with StandardCopyOption.COPY_ATTRIBUTES an UnsupportedOperationException isthrown. 


Q72. Given the code fragment: What is the result, if the file myfile.txt does not exist? 

A. A runtime exception is thrown at line 4 

B. A runtime exception is thrown at line 7 

C. Creates a new file and prints no output 

D. Compilation fails 

Answer:

Explanation: 

!! Compilation fails if FileNotFoundException is tried to catch (Line 12) 

(The exception FileNotFoundException is already caught by the alternative IOException) 

if this is removed will be thrown a FileNotFoundException at line 4. 


Q73. Given: 

What is the result? 

A. An exception is thrown at runtime on line 9. 

B. An exception is thrown at runtime on line 12 

C. onetwonull 

D. onetwothree 

E. twoonenull 

F. threetwoone 

Answer:

Explanation: 

addFirst void addFirst(E e) Inserts the specified element at the front of this deque if it is possible to do so immediately without violating capacity restrictions. When using a capacity-restricted deque, it is generally preferable to 

use method offerFirst 

(E). 

pollLast 

E pollLast() 

Retrieves and removes the last element of this deque, or returns null if this deque is empty. 

Returns: 

the tail of this deque, or null if this deque is empty 


Q74. Given the code format: 

SimpleDateFormat sdf; 

Which code statements will display the full text month name? 

A. sdf = new SimpleDateFormat ("mm", Locale.UK); System.out.println("Result:", sdf.format(new date())); 

B. sdf = new SimpleDateFormat ("MM", Locale.UK); System.out.println("Result:", sdf.format(new date())); 

C. sdf = new SimpleDateFormat ("MMM", Locale.UK); System.out.println("Result:", sdf.format(new date())); 

D. sdf = new SimpleDateFormat ("MMMM", Locale.UK); System.out.println("Result:", sdf.format(new date())); 

Answer:

Explanation: 

Typical output would be Current Month in M format: 2 Current Month in MM format: 02 Current Month in MMM format: Feb Current Month in MMMM format: February 


Q75. Given: 

What is the result? 

A. riding riding tolting 

B. riding riding cantering 

C. tolting cantering tolting 

D. tolting cantering cantering 

E. Compilation fails. 

F. An exception is thrown at runtime. 

Answer:

Explanation: 

The compilation fails at: 

interface Rideable { 

public String ride() { return "riding ";} 

Error due to: interface methods cannot have body. 


Q76. Given the fragment: 

If thread a and thread b are running, but not completing, which two could be occurring? 

A. livelock 

B. deadlock 

C. starvation 

D. loose coupling 

E. cohesion 

Answer: A,B 

Explanation: 

A: A thread often acts in response to the action of another thread. If the other thread's action is also a responseto the action of another thread, then livelock may result. A thread often acts in response to the action ofanother thread. If the other thread's action is also a response to the action of another thread, then livelock mayresult. 

B: Deadlock describes a situation where two or more threads are blocked forever, waiting for each other. 


Q77. Given the directory structure that contains three directories: company, Salesdat, and Finance: 

Company 

-Salesdat 

* Target.dat 

-Finance 

Salary.dat 

Annual.dat 

And the code fragment: If Company is the current directory, what is the result? 

A. Prints only Annual.dat 

B. Prints only Salesdat, Annual.dat 

C. Prints only Annual.dat, Salary.dat, Target.dat 

D. Prints at least Salesdat, Annual.dat, Salary.dat, Target.dat 

Answer:

Explanation: 

IF !! return FileVisitResult.CONTINUE; 

The pattern *dat will match the directory name Salesdat and it will also match the file 

Annual.dat. 

It will not be matched to Target.dat which is in a subdirectory. 


Q78. Given the classes: What is the result? 

A. John Harry 

B. unknown Harry 

C. john unknown 

D. unknown unknown 

E. Compilation fails. 

F. An exception is thrown at runtime. 

Answer:

Explanation: 

getName() is missing in John, hence Pupils getName() is invoked and the String in Pupils scope returned. 


Q79. Given the code fragment: 

What is the result of the employees table has no records before the code executed? 

A. 1 Sam 

B. 4 Jack 

C. 3 John 4 Jack 

D. 1 Sam 3 John 4 Jack 

Answer:

Explanation: 

AutoCommit is set to false. The two following statements will be within the same 

transaction. 

stmt.executeUpdate("insert into employees values(1,'Sam')"); 

stmt.executeUpdate("insert into employees values(2,'Jane')"); 

These two statements are rolled-back through (the savepoint is ignored! the savepoint 

must be specified (e.g. 

conn.rollback(save1); ) in the rollback if you want to rollback to the savepoint): 

conn.rollback() ; 

The next two insert statements are executed fine. Their result will be in the output. 


Q80. Given: 

Which two statements are true about the writer class? 

A. It compiles without any changes. 

B. It compiles if the code void write (String s); is added at line***. 

C. It compiles if the code void write (); is added at line ***. 

D. It compiles if the code void write (string s) { } is added at line ***. 

E. It compiles if the code write () {}is added at line ***. 

Answer:

Explanation: 

An abstract class does not need to implement the interface methods.