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MCQOPTIONS
This section includes 765 Mcqs, each offering curated multiple-choice questions to sharpen your Placement Tests knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
A final class is not to be inherited. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 252. |
What is meant by JIT? |
| A. | Java In Time |
| B. | Just In Time |
| C. | Join In Time |
| D. | None of the above |
| Answer» C. Join In Time | |
| 253. |
If there is no constructor in a class, compiler automatically creates a default constructor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 254. |
Which method is used to invoke the garbage collector to perform the cleanup processing? |
| A. | gc() method |
| B. | finalize() method |
| C. | q.get() method |
| D. | None of the above |
| Answer» B. finalize() method | |
| 255. |
In the following JDBC drivers which is known as fully java driver? |
| A. | Native-API driver |
| B. | Network Protocol driver |
| C. | Thin driver |
| D. | Both B & C |
| Answer» E. | |
| 256. |
Which model does a Java applet or application talks directly to the data source? |
| A. | Two-tier models |
| B. | Three-tier models |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. Three-tier models | |
| 257. |
Wrapper classes are not used to convert any data type into an object. |
| A. | True |
| B. | False |
| Answer» C. | |
| 258. |
Which package provides many event classes and Listener interfaces for event handling? |
| A. | java.awt |
| B. | java.awt.Graphics |
| C. | java.awt.event |
| D. | None of the above |
| Answer» D. None of the above | |
| 259. |
Which symbol is used to contain the values of automatically initialized arrays. Also used to define a block of code, for classes, methods, and local scopes? |
| A. | Brackets |
| B. | Braces |
| C. | Parentheses |
| D. | Semicolon |
| Answer» C. Parentheses | |
| 260. |
Which method of URL class represents a URL and it has complete set of methods to manipulate URL in Java? |
| A. | java.net.URL |
| B. | java.net.URLConnection |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. java.net.URLConnection | |
| 261. |
An interface is a blueprint of a class. It has static constants and abstract methods. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 262. |
Which classes has Sun Microsystem suggested not to use for read and write the textual information? |
| A. | BufferedInputStream and BufferedOutputStream |
| B. | SequenceInputStream and SequenceOutputStream |
| C. | FileInputStream and FileOutputStream |
| D. | Both A & B |
| Answer» D. Both A & B | |
| 263. |
Which are the techniques for defining the structure of a specific type of XML documents? |
| A. | Schema |
| B. | DTD |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 264. |
What is the advantage of Method Overloading? |
| A. | Method overloading increases the readability of the program |
| B. | Method overloading does not increases the readability of the program |
| C. | Method overloading does not increases the reliability of the program |
| D. | None of the above |
| Answer» B. Method overloading does not increases the readability of the program | |
| 265. |
The values configured in struts.properties file will override the default values configured in default.properties which is contained in the struts2-core-x.y.z.jar distribution. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 266. |
In EJB, middleware services are provided by EJB Container automatically. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 267. |
1099 is the default port used by RMI Registry. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 268. |
Which tag is used to execute java source code in JSP? |
| A. | Declaration Tag |
| B. | Scriptlet tag |
| C. | Expression tag |
| D. | None of the above |
| Answer» C. Expression tag | |
| 269. |
Java Plug-in software is not responsible to manage the lifecycle of an Applet. |
| A. | True |
| B. | False |
| Answer» C. | |
| 270. |
XML is a programming language like C# or Java. |
| A. | True |
| B. | False |
| Answer» C. | |
| 271. |
Which provides a new way for your programs to interface with code libraries written in other languages? |
| A. | JNI |
| B. | JDBC |
| C. | RMI |
| D. | GUI |
| Answer» B. JDBC | |
| 272. |
An abstract class has no use when it is extended by some other class. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 273. |
Which method of 'Class' class is used to register the driver class and the method is used to dynamically load the driver class? |
| A. | forName() |
| B. | getConnection() |
| C. | createStatement() |
| D. | executeQuery() |
| Answer» B. getConnection() | |
| 274. |
A class is declared inside a class but outside a method it is known as ________. |
| A. | Anonymous Inner class |
| B. | Member Inner class |
| C. | Local Inner class |
| D. | Static nested class |
| Answer» C. Local Inner class | |
| 275. |
We need to specify @Inheritance(strategy=InheritanceType.JOINED) in the parent class and @PrimaryKeyJoinColumn annotation in the subclasses. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 276. |
Which object is created by the web container at time of deploying the project? |
| A. | ServletConfig |
| B. | ServletContext |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 277. |
Interceptor can change the flow of the application by returning the string. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 278. |
Which way will the architecture and flow of struts 2 application will go to understand the struts flow? |
| A. | Basic |
| B. | Standard |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 279. |
EJB is like COM, Abbreviate the term COM? |
| A. | Component Object Model |
| B. | Component Oriented Model |
| C. | Common Object Model |
| D. | Common Oriented Model |
| Answer» B. Component Oriented Model | |
| 280. |
The following a) It is lightweight. b) It supports pluggable look and feel. c) It follows MVC (Model View Controller) architecture are the advantages of _____ . |
| A. | Swing |
| B. | AWT |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. AWT | |
| 281. |
Which variables are created when an object is created with the use of the keyword 'new' and destroyed when the object is destroyed? |
| A. | Local variables |
| B. | Instance variables |
| C. | Class Variables |
| D. | Static variables |
| Answer» C. Class Variables | |
| 282. |
Which component does the Entity bean represent the persistent data stored in the database? |
| A. | Server-side component |
| B. | Client-side component |
| C. | server and client side component |
| D. | None of the above |
| Answer» B. Client-side component | |
| 283. |
Which ways are used by the Log4j and Logback frameworks in hibernate framework to support logging? |
| A. | By log4j.xml file |
| B. | By log4j.properties |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 284. |
If you are inserting any value in the wrong index as shown below, 1. int a[]=new int[5]; 2. a[10]=50; it would result in ______. |
| A. | NullPointerException |
| B. | ArrayIndexOutOfBoundsException |
| C. | ArithmeticException |
| D. | NumberFormatException |
| Answer» C. ArithmeticException | |
| 285. |
Which are passive controls that do not support any interaction with the user? |
| A. | Choice |
| B. | List |
| C. | Labels |
| D. | Checkbox |
| Answer» D. Checkbox | |
| 286. |
Which access specifiers can be used for a class so that it’s members can be accessed by a different class in the different package? |
| A. | Private |
| B. | Public |
| C. | Protected |
| D. | None of the above |
| Answer» C. Protected | |
| 287. |
Breaking a string or stream into meaningful independent words is known as tokenization. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 288. |
What can be accessed or inherited without actual copy of code to each program? |
| A. | Browser |
| B. | Applet |
| C. | Package |
| D. | None of the above |
| Answer» D. None of the above | |
| 289. |
What is used to display the intermediate result in an interceptor? |
| A. | Params Interceptor |
| B. | Custom Interceptor |
| C. | ExecAndWait Interceptor |
| D. | Prepare Interceptor |
| Answer» D. Prepare Interceptor | |
| 290. |
Which Thread pool is used where container creates a thread pool to process the request? |
| A. | Servlet |
| B. | JSp |
| C. | All of the above |
| D. | None of the above |
| Answer» D. None of the above | |
| 291. |
The workflow interceptor is used to get information about the error messages defined in the action class. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 292. |
How many methods does a thread class provides for sleeping a thread? |
| A. | 3 |
| B. | 1 |
| C. | 4 |
| D. | 2 |
| Answer» E. | |
| 293. |
If you import a package, subpackages will not be imported. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 294. |
Which method returns a reference to the currently executing thread object? |
| A. | currentThread() |
| B. | runningThread() |
| C. | runnableThread() |
| D. | None of the above |
| Answer» B. runningThread() | |
| 295. |
Which keyword is used to make the classes and interface of another package accessible to the current package? |
| A. | Import |
| B. | Implements |
| C. | Instanceof |
| D. | None of the above |
| Answer» B. Implements | |
| 296. |
Which is a language for finding information in an XML document? |
| A. | Xpath |
| B. | XSLT |
| C. | XLink |
| D. | XPointer |
| Answer» B. XSLT | |
| 297. |
Which allows the caller to remove elements from the underlying collection during the iteration with well-defined semantics? |
| A. | Enumeration |
| B. | Iterator |
| C. | None of the above |
| D. | Both A & B |
| Answer» C. None of the above | |
| 298. |
Consider the following two statements (A) int x = 25; (B) Integer y = new Integer(33); What is the difference between these two statements? |
| A. | Primitive data types |
| B. | primitive data type and an object of a wrapper class |
| C. | Wrapper class |
| D. | None of the above |
| Answer» C. Wrapper class | |
| 299. |
Which are the main features of XML? |
| A. | Text data description |
| B. | Human- and computer-friendly format |
| C. | Handles data in a tree structure having one-and only one-root element |
| D. | All mentioned above |
| Answer» E. | |
| 300. |
Which language is Extensible Markup Language (XML) similar? |
| A. | HTML |
| B. | PHP |
| C. | JavaScript |
| D. | Wordpress |
| Answer» B. PHP | |