Hot questions in Java / GATE Overflow for GATE CSE

2 votes

1 answer

1

NIELIT 2017 July Scientist B (IT) - Section B: 42
Which of the following is false about abstract classes in Java? If we derive an abstract class and do not implement all the abstract methods, then the derived class should also be marked as abstract using 'abstract' ... . A class can be made abstract without any abstract method. A class can inherit from multiple abstract classes.

Which of the following is false about abstract classes in Java?If we derive an abstract class and do not implement all the abstract methods, then the derived class should...

admin

33.5k views

admin asked Mar 30, 2020

1 votes

2 answers

2

NIELIT Scientific Assistant A 2020 November: 110
In Java, for ensuring the persistence property, the class must implements: Serializable Interface Utilization Interface Threadable Interface Recognizable Interface

In Java, for ensuring the persistence property, the class must implements:Serializable InterfaceUtilization InterfaceThreadable InterfaceRecognizable Interface

gatecse

586 views

gatecse asked Dec 9, 2020

2 votes

1 answer

3

NIELIT 2017 July Scientist B (IT) - Section B: 43
Which of the following is true about interfaces in Java? An interface can contain following type of members. $\dots$ public, static, final fields(i.e., constants)$\dots$default and static methods with bodies. An instance of interface can be created. A class can implement multiple ... . $1,3$ and $4$ $1,2$ and $4$ $2,3$ and $4$ $1,2,3$ and $4$

Which of the following is true about interfaces in Java? An interface can contain following type of members. $\dots$ public, static, final fields(i.e., constants)$\dots$...

admin

10.7k views

admin asked Mar 30, 2020

1 votes

1 answer

4

NIELIT Scientific Assistant A 2020 November: 112
In Java, the Dynamic Array are known as : Vectors Cycle Remote Kubernotos

In Java, the Dynamic Array are known as :VectorsCycleRemoteKubernotos

gatecse

675 views

gatecse asked Dec 9, 2020

1 votes

1 answer

5

NIELIT Scientific Assistant A 2020 November: 89
Which of the following Interface is not supported by $\text{JDBC}$ for connecting to Database in Java Programming language? Statement Interface Prepared Statement Interface Callable Statement Interface Database Interface

Which of the following Interface is not supported by $\text{JDBC}$ for connecting to Database in Java Programming language?Statement InterfacePrepared Statement Interface...

gatecse

464 views

gatecse asked Dec 9, 2020

1 votes

1 answer

6

NIELIT Scientific Assistant A 2020 November: 108
Which of the following are two main types of overloading in Java? Overloading and linking Overriding and linking Reusability and data-hiding Overloading and Overriding

Which of the following are two main types of overloading in Java?Overloading and linkingOverriding and linkingReusability and data-hidingOverloading and Overriding

gatecse

395 views

gatecse asked Dec 9, 2020

1 votes

1 answer

7

NIELIT Scientific Assistant A 2020 November: 107
In the given program: class Dialog1 { public static void main(String args[]) { Frame f1=new Frame("INDIA"); f1.setSize(300,300); f1.setVisible(true); FileDialog d=new FileDialog(f1,"MyDialog"); d.setVisible(true); ... of the following statements are true? f1.setClear(true); f1.setVisible(true); f1.setlook(true); f1.setclean(true);

In the given program:class Dialog1 { public static void main(String args[]) { Frame f1=new Frame("INDIA"); f1.setSize(300,300); f1.setVisible(true); FileDialog d=new File...

gatecse

473 views

gatecse asked Dec 9, 2020

1 votes

1 answer

8

NIELIT Scientific Assistant A 2020 November: 84
The static keyword is used in public static void main() declaration in Java: To enable the $\text{JVM}$ to make call to the main(), as class has not been instantiated To enable the $\text{JVM}$ to make call to the main(), as class ... as class has not been loaded To enable the $\text{JVM}$ to make call to the main(), as class has not been finalized

The static keyword is used in public static void main() declaration in Java:To enable the $\text{JVM}$ to make call to the main(), as class has not been instantiatedTo en...

gatecse

469 views

gatecse asked Dec 9, 2020

1 votes

1 answer

9

NIELIT Scientific Assistant A 2020 November: 68
Which of the following construct is not supported by Java Server Pages? $\text{JSP}$ Directives $\text{JSP}$ Scriptlets $\text{JSP}$ Actions $\text{JSP}$ Reaction

Which of the following construct is not supported by Java Server Pages?$\text{JSP}$ Directives$\text{JSP}$ Scriptlets$\text{JSP}$ Actions$\text{JSP}$ Reaction

gatecse

411 views

gatecse asked Dec 9, 2020

1 votes

1 answer

10

NIELIT Scientific Assistant A 2020 November: 74
What is the output of the following program? abstract class sum { public abstract int sumOfTwo(int n1, int n2); public abstract int sumOfThree(int n1, int n2, int n3); public void disp(){ System.out.println("Method of class Sum"); } } class ... $26\\10\\\text{Method of class Sum}$ $\text{Method of class Sum}\\26\\10$ $\text{Error}$

What is the output of the following program?abstract class sum { public abstract int sumOfTwo(int n1, int n2); public abstract int sumOfThree(int n1, int n2, int n3); pub...

gatecse

402 views

gatecse asked Dec 9, 2020

1 votes

1 answer

11

NIELIT 2017 July Scientist B (IT) - Section B: 41
Which of the following is/are true about packages in Java? Every class is part of some package. All classes in a file are part of the same package. If no package is specified, the classes in the file go into a special unnamed package. If no package is specified, a ... in this package. Only $1,2$ and $3$ Only $1,2$ and $4$ Only $4$ Only $1$ and $3$

Which of the following is/are true about packages in Java? Every class is part of some package.All classes in a file are part of the same package.If no package is specif...

admin

6.7k views

admin asked Mar 30, 2020

1 votes

3 answers

12

UGC NET CSE | July 2018 | Part 2 | Question: 3
What is the output of the following JAVA program? class simple { public static void main(String[ ] args) { simple obj = new simple(); obj.start(); } void start() { long [] P = {3, 4, 5}; long [] Q = method (P); System.out.print (P[0] + P[1] +P[2]+ : ... ]); } long [ ] method (long [ ] R) { R[1] = 7; return R; } } //end of class 12:15 15:12 12:12 15:15

What is the output of the following JAVA program?class simple { public static void main(String[ ] args) { simple obj = new simple(); obj.start(); } void start() { long []...

Pooja Khatri

4.2k views

Pooja Khatri asked Jul 13, 2018

1 votes

2 answers

13

UGC NET CSE | June 2019 | Part 2 | Question: 23
What is the output of the following JAVA program? public class Good { private int m; public Good (int m){this.m=m;} public Boolean equals (Good n) {return n.m==m;} public static void main (string args[]){ Good m1 = new Good(22); ... equals(m2)); } } True, True, False, False True, False, True, False True, True, False, True True, False, False, False

What is the output of the following JAVA program?public class Good { private int m; public Good (int m){this.m=m;} public Boolean equals (Good n) {return n.m==m;} public ...

Arjun

2.0k views

Arjun asked Jul 2, 2019

0 votes

1 answer

14

NIELIT 2016 DEC Scientist B (IT) - Section B: 9
Which of the following is a platform free language? JAVA C Assembly Fortran

Which of the following is a platform free language?JAVACAssemblyFortran

admin

1.0k views

admin asked Mar 31, 2020

0 votes

1 answer

15

NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 8
Is null an object? Yes No Sometimes yes None of these

Is null an object?YesNoSometimes yesNone of these

admin

985 views

admin asked Apr 1, 2020

0 votes

1 answer

16

NIELIT 2016 DEC Scientist B (IT) - Section B: 6
Earlier name of Java programming language was: OAK D Netbean Eclipse

Earlier name of Java programming language was:OAKDNetbeanEclipse

admin

725 views

admin asked Mar 31, 2020

5 votes

3 answers

17

ISRO2011-44
In Java, after executing the following code what are the values of x, y and z? int x,y=10; z=12; x=y++ + z++; x=22, y=10, z=12 x=24, y=10, z=12 x=24, y=11, z=13 x=22, y=11, z=13

In Java, after executing the following code what are the values of x, y and z?int x,y=10; z=12;x=y++ + z++;x=22, y=10, z=12x=24, y=10, z=12x=24, y=11, z=13x=22, y=11, z=1...

go_editor

3.9k views

go_editor asked Jun 22, 2016

1 votes

2 answers

18

UGC NET CSE | December 2014 | Part 3 | Question: 37
Which methods are utilized to control the access to an object in multi-threaded programming ? Asynchronized methods Synchronized methods Serialized methods None of the above

Which methods are utilized to control the access to an object in multi-threaded programming ? Asynchronized methods Synchronized methods Serialized methodsNone of the abo...

makhdoom ghaya

6.0k views

makhdoom ghaya asked Jul 28, 2016

2 votes

3 answers

19

UGC NET CSE | June 2016 | Part 3 | Question: 40
Which of the following statements is correct? Every class containing abstract method must not be declared abstract Abstract class cannot be directly initiated with new operator Abstract class cannot be initiated Abstract class contains definition of implementations

Which of the following statements is correct?Every class containing abstract method must not be declared abstractAbstract class cannot be directly initiated with new oper...

go_editor

10.9k views

go_editor asked Aug 20, 2016

2 votes

3 answers

20

UGC NET CSE | August 2016 | Part 3 | Question: 42
Java uses threads to enable the entire environment to be ______. Symmetric Asymmetric Synchronous Asynchronous

Java uses threads to enable the entire environment to be ______.SymmetricAsymmetricSynchronousAsynchronous

makhdoom ghaya

2.6k views

makhdoom ghaya asked Oct 4, 2016

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