McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Computer Applications (BCA) , Bachelor of Science in Computer Science (BSc CS) , Master of Computer Applications (MCA) , Programming Languages .
| 351. |
Standard output variable ‘out’ is defined in which class? |
| A. | Void |
| B. | Process |
| C. | Runtime |
| D. | System |
| Answer» D. System | |
| 352. |
Which of these packages contains all the event handling interfaces? |
| A. | java.lang |
| B. | java.awt |
| C. | java.awt.event |
| D. | java.event |
| Answer» C. java.awt.event | |
| 353. |
Which of these keywords is not a part of exception handling? |
| A. | try |
| B. | finally |
| C. | thrown |
| D. | catch |
| Answer» C. thrown | |
| 354. |
Which of these exceptions handles the divide by zero error? |
| A. | ArithmeticException |
| B. | MathException |
| C. | IllegalAccessException |
| D. | IllegarException |
| Answer» A. ArithmeticException | |
| 355. |
Which of these exceptions will occur if we try to access the index of an array beyond its length? |
| A. | ArithmeticException |
| B. | ArrayException |
| C. | ArrayIndexException |
| D. | ArrayIndexOutOfBoundsException |
| Answer» D. ArrayIndexOutOfBoundsException | |
| 356. |
What decides thread priority? |
| A. | Process |
| B. | Process scheduler |
| C. | Thread |
| D. | Thread scheduler |
| Answer» D. Thread scheduler | |
| 357. |
Which of the following will ensure the thread will be in running state? |
| A. | yield() |
| B. | notify() |
| C. | wait() |
| D. | Thread.killThread() |
| Answer» C. wait() | |
| 358. |
Which of these is used to read a string from the input stream? |
| A. | get() |
| B. | getLine() |
| C. | read() |
| D. | readLine() |
| Answer» C. read() | |
| 359. |
Which of these methods can be used to output a string in an applet? |
| A. | display() |
| B. | print() |
| C. | drawString() |
| D. | tr |
| Answer» A. display() | |
| 360. |
Which of these methods is a part of Abstract Window Toolkit (AWT) ? |
| A. | display() |
| B. | paint() |
| C. | drawString() |
| D. | tr |
| Answer» A. display() | |
| 361. |
Which of these operators can be used to get run time information about an object? |
| A. | getInfo |
| B. | Info |
| C. | instanceof |
| D. | getinfoof |
| Answer» C. instanceof | |
| 362. |
Which of these methods can be used to writing console output? |
| A. | print() |
| B. | println() |
| C. | write() |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 363. |
Which of these class is used to read from a file? |
| A. | InputStream |
| B. | BufferedInputStream |
| C. | FileInputStream |
| D. | BufferedFileInputStream |
| Answer» C. FileInputStream | |
| 364. |
Which of these events is generated by scroll bar? |
| A. | ActionEvent |
| B. | KeyEvent |
| C. | WindowEvent |
| D. | AdjustmentEvent |
| Answer» D. AdjustmentEvent | |
| 365. |
Which of these methods can be used to obtain the command name for invoking ActionEvent object? |
| A. | getCommand() |
| B. | getActionCommand() |
| C. | getActionEvent() |
| D. | getActionEventCommand() |
| Answer» B. getActionCommand() | |
| 366. |
Which of the following is not a primitive data types? |
| A. | Byte. |
| B. | String. |
| C. | Integer. |
| D. | Float. |
| Answer» B. String. | |
| 367. |
What is the range of the char type? |
| A. | 0 to 216. |
| B. | 0 to 215. |
| C. | 0 to 216-1. |
| D. | 0 to 215-1. |
| Answer» D. 0 to 215-1. | |
| 368. |
Literals in java must be preceded by which of these? |
| A. | L. |
| B. | l. |
| C. | D. |
| D. | both a & b. |
| Answer» D. both a & b. | |
| 369. |
Object is an _________ of a class. |
| A. | instance. |
| B. | implement. |
| C. | inheritance. |
| D. | invoke. |
| Answer» A. instance. | |
| 370. |
Class is a ______ entity. |
| A. | logical. |
| B. | physical. |
| C. | up normal. |
| D. | collection of. |
| Answer» A. logical. | |
| 371. |
Object is a _______ entity. |
| A. | normal. |
| B. | physical. |
| C. | logical. |
| D. | normal. |
| Answer» B. physical. | |
| 372. |
______ can appear anywhere in the body of a java method. |
| A. | definition. |
| B. | declaration. |
| C. | determine. |
| D. | package. |
| Answer» B. declaration. | |
| 373. |
______ must be the first non comment statement in the file. |
| A. | package. |
| B. | class. |
| C. | object. |
| D. | declaration. |
| Answer» A. package. | |
| 374. |
_______ is passed to a method by use of call-by-reference. |
| A. | variables. |
| B. | objects. |
| C. | methods. |
| D. | operators. |
| Answer» B. objects. | |
| 375. |
Every method of a ________ is implicitly final. |
| A. | static class. |
| B. | dynamic class. |
| C. | final class. |
| D. | abstract class. |
| Answer» C. final class. | |
| 376. |
A _______ object cannot be modified after it is created. |
| A. | double. |
| B. | int. |
| C. | string. |
| D. | main. |
| Answer» C. string. | |
| 377. |
A ____ class may not have any abstract method. |
| A. | abstract. |
| B. | static. |
| C. | final. |
| D. | public. |
| Answer» C. final. | |
| 378. |
What will be the result of the expression 13 & 25? |
| A. | 38. |
| B. | 25. |
| C. | 9. |
| D. | 12. |
| Answer» C. 9. | |
| 379. |
What will be result of expression 9 | 9? |
| A. | 1. |
| B. | 18. |
| C. | 9. |
| D. | 12. |
| Answer» C. 9. | |
| 380. |
_________ Operators are overloaded for string objects? |
| A. | -, +. |
| B. | +, =. |
| C. | <<, >>. |
| D. | ++, --. |
| Answer» B. +, =. | |
| 381. |
If an expression contains double, int, float, long, then whole expression will promoted into which of these data types?. |
| A. | .long |
| B. | int. |
| C. | double. |
| D. | float. |
| Answer» C. double. | |
| 382. |
________ is valid for if statement? |
| A. | An integer expression. |
| B. | A Boolean expression. |
| C. | A character expression. |
| D. | A legal expression. |
| Answer» B. A Boolean expression. | |
| 383. |
A package is a collection of ______. |
| A. | keywords. |
| B. | classes and interfaces. |
| C. | editing tools. |
| D. | views. |
| Answer» B. classes and interfaces. | |
| 384. |
________ statement is valid for array declaration. |
| A. | int number ();. |
| B. | float number ();. |
| C. | float number [];. |
| D. | count Int [];. |
| Answer» C. float number [];. | |
| 385. |
What is the output of relational operators?. |
| A. | integer. |
| B. | boolean. |
| C. | character. |
| D. | double. |
| Answer» B. boolean. | |
| 386. |
Which of these operators can skip evaluating right hand operand?. |
| A. | !. |
| B. | |. |
| C. | &. |
| D. | &&. |
| Answer» D. &&. | |
| 387. |
Which exception is thrown by the read () method of Input Stream class? |
| A. | Exception. |
| B. | ClassNotFoundException. |
| C. | read Exception. |
| D. | IOException. |
| Answer» D. IOException. | |
| 388. |
Which of the following denotes a javadoc comment? |
| A. | //#. |
| B. | /*. |
| C. | /**. |
| D. | //**. |
| Answer» C. /**. | |
| 389. |
Using the keyword interface you can fully abstract a _________. |
| A. | method. |
| B. | keyword |
| C. | class. |
| D. | variables. |
| Answer» C. class. | |
| 390. |
One interface can inherit another by use of the keyword _____. |
| A. | public. |
| B. | extends. |
| C. | method name. |
| D. | class name. |
| Answer» B. extends. | |
| 391. |
An exception is an __________ condition that arises in a code. |
| A. | abnormal. |
| B. | casual. |
| C. | unfortunate. |
| D. | opposite. |
| Answer» A. abnormal. | |
| 392. |
______ is at the top of the exception class hierarchy. |
| A. | try. |
| B. | throwable. |
| C. | exception class. |
| D. | catch. |
| Answer» B. throwable. | |
| 393. |
In java thread to thread communication is called _____. |
| A. | passing. |
| B. | sending. |
| C. | messaging. |
| D. | calling. |
| Answer» C. messaging. | |
| 394. |
Which of these access specifiers can be used for an interface?. |
| A. | public. |
| B. | protected. |
| C. | private. |
| D. | All of the mentioned. |
| Answer» A. public. | |
| 395. |
Java programs perform I/O through _______. |
| A. | i/o methods. |
| B. | i/o package. |
| C. | streams. |
| D. | compiler. |
| Answer» C. streams. | |
| 396. |
In java a _______ is a sequence of characters. |
| A. | string. |
| B. | arrayChar. |
| C. | groupChar. |
| D. | collection. |
| Answer» A. string. | |
| 397. |
The String is defined in _______ namespace. |
| A. | java.Lang. |
| B. | java.String. |
| C. | java.Char. |
| D. | java.Awt. |
| Answer» A. java.Lang. | |
| 398. |
__________ is a special member function. |
| A. | method. |
| B. | class. |
| C. | use defined function. |
| D. | constructor. |
| Answer» D. constructor. | |
| 399. |
Keyword _____ is always a reference to the object. |
| A. | new. |
| B. | this. |
| C. | invoke. |
| D. | class. |
| Answer» B. this. | |
| 400. |
________ is the mechanism that binds together the code and the data. |
| A. | polymorphism. |
| B. | encapsulation. |
| C. | inheritance. |
| D. | together. |
| Answer» B. encapsulation. | |
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