Q&A Discussions

What if I create a private variable inside the main class, would that mean it'll be available in other classes? What do private variables even do?

1st Mar 2016, 9:35 AM

sooare

access-modifiers java

5 Votes

How many devices work on java ? (approx)

27th Feb 2016, 11:30 AM

Pavitran

0 Votes

hello! can anyone explain the keyword this please I didn't understand it

26th Feb 2016, 7:47 PM

Pradyut Joshi

constructors java this

4 Votes

What is the difference between sourcecode and pseudocode?

24th Feb 2016, 8:21 PM

Kaoutar Noureddine

0 Votes

Would a comment be able to be ended and code inserted AFTER it?

24th Feb 2016, 9:16 AM

Anakin Sepherd

comments java

1 Vote

5 Answers

23rd Feb 2016, 9:19 PM

Alex Diaz

How would i make it so it accepts more than 1 parameter? i use commas?

java methods

0 Votes

Can you give an example how to implement muliple interfaces in one class?

23rd Feb 2016, 8:11 PM

Orpheus

interfaces java

7 Votes

hi... i probably didn't understand something but the following code doesn't lead to an error.. it changes the value of PI and prints it.

23rd Feb 2016, 4:20 PM

Andrzej Warunek

final java

0 Votes

I don't understand when to use public, private and static words...

23rd Feb 2016, 7:56 AM

Orpheus

java methods

2 Votes

Can anyone tell me how to write a program that only show the second prompt after user input the first & press enter ?

23rd Feb 2016, 2:50 AM

Maria Rosaria Amabile

input java

-1 Vote

What's the practical use of abstraction pls explain me, thanks in advance

23rd Feb 2016, 1:34 AM

Lenny

abstract-classes java

4 Votes

I really dont understand for, while, do while etc.. they're all the same.. they can loop anything.. what's the difference?

22nd Feb 2016, 11:58 AM

Piyush Joshi

java loops

0 Votes

How to read a file character by character?

22nd Feb 2016, 1:13 AM

Rhey Jhey

files java

0 Votes

What is (string [ ] args)?

21st Feb 2016, 8:38 AM

Siva kumar

1 Vote

Why should one choose python instead of java or c++?

21st Feb 2016, 5:25 AM

Charles Patel

c++java python

0 Votes

Why do we use overriding in our code?

20th Feb 2016, 4:22 PM

Mohammadamin Beiruti

java polymorphism

0 Votes

How do I declare constant variables?

19th Feb 2016, 10:12 AM

Mohammed Alghazzawi

constants java variables

0 Votes

How does one declare constant variables like 3.142,for PI?

17th Feb 2016, 9:56 AM

Elijah Murimi

java variables

3 Votes

9 Answers

16th Feb 2016, 6:18 AM

Elijah Murimi

Which is best Android Studio or Eclipse?

What is the difference between the normal comments and the document comments?

2 Votes

8 Answers

15th Feb 2016, 2:13 AM

Chaman Sharma

comments java

0 Votes

What tools is used to test the java program?

13th Feb 2016, 2:34 PM

Daniel Bampoe

1 Vote

Why main class should always be static?

11th Feb 2016, 4:48 PM

Vivek Patil

java static

3 Votes

I can use single quote to the string value ? like string var='text';

8th Feb 2016, 9:22 PM

Khurshid wali

java strings

0 Votes

5 Answers

7th Feb 2016, 12:34 AM

Elghozi Nasreddine

Is CSS better than Bootstrap? Should I learn CSS first or Java Script first?

bootstrap css javascript

2 Votes

Can anyone explain why I need to create a constructor at all when I can just make an regular object and do the same things?

5th Feb 2016, 8:45 AM

Srijan Mukherjee

constructors java

0 Votes

How is a person supposed to keep all the specific exceptions straight?

4th Feb 2016, 2:11 PM

Syed Ruman

exceptions java

1 Vote

What is use of math.random() ?

2nd Feb 2016, 9:53 PM

Elizabeth Lewis

java math

1 Vote

1st Feb 2016, 2:27 PM

Nilesh Solanki

Who is inventor of java?

0 Votes

Why is it List<integer> list = new ArrayList();? shouldnt the first one be ArrayList instead of List?

30th Jan 2016, 6:54 AM

Aayush Gupta

java lists

0 Votes

Why is there a semicolon and the braces after " Machine m1 = new Machine()" ?

28th Jan 2016, 10:19 PM

Branko Nešić

anonymous-classes java

0 Votes

What does '+=' sign mean?

27th Jan 2016, 3:04 PM

Dalia Ahmed

java operators

4 Votes

8 Answers

26th Jan 2016, 10:41 PM

Miki

What do .jar extension refer?

0 Votes

Is SQL a language like java or c?

25th Jan 2016, 9:50 AM

brinth khanna

sql

0 Votes

What is diff between java and c++?

23rd Jan 2016, 11:23 AM

Ankit S.Mahindre

c++java

0 Votes

What is a double attribute?

23rd Jan 2016, 4:38 AM

Akash

classes java

0 Votes

Any particular reason why you wouldn't just keep everything public?

23rd Jan 2016, 4:28 AM

Christopher Struble

access-modifiers java

1 Vote

22nd Jan 2016, 10:38 PM

Hamza

How to detect the OS?

0 Votes

Why should i type public before constructor? can i create a constructor without public?

17th Jan 2016, 8:00 PM

Gustavo Peralta Vazquez

constructors java

0 Votes

Does 'Exception e' declare an object 'e' of type Exception as a parameter, or is it syntax simply meaning 'all exceptions'?

14th Jan 2016, 12:04 PM

JulietLove

exceptions java

2 Votes

7 Answers

12th Jan 2016, 10:43 PM

Alex Greidinger

Difference between class & interface?

interfaces java

2 Votes

Can i use a string in switch?

12th Jan 2016, 6:26 PM

Abdul Rauf

java switch

0 Votes

Whats the point if you need to override all the methods insde the interface ?

11th Jan 2016, 11:34 AM

Ben Wong

interfaces java

1 Vote

Can anyone tell me difference between Encapsulation and Abstraction?

9th Jan 2016, 3:23 AM

Kanon

abstraction encapsulation java

1 Vote

8 Answers

8th Jan 2016, 4:33 PM

Digambar Bhujabal

What is the difference between HashMap and HashSet?

hashmap java

0 Votes

Seems like math class doesn't exist in my eclipse version in library. It asks me to create method pow when I try to check Double a = Math.pow(2,3); Any ideas?

5th Jan 2016, 4:21 PM

Sindhu Manivannan

java math

1 Vote

can we create constructor in abstract class?

5th Jan 2016, 2:39 PM

Eugene Lukianov

abstract-classes java

1 Vote

When we declare a class as final does it mean that we cannot create its subclasses or it cannot be the subclass of another class?

2nd Jan 2016, 4:50 PM

Amer Saoud

final java

0 Votes

In most of the place i hv seen that the array format is like: int arr [5]; but here you r preferring to use int [5] arr; format. Is it really standard ?

2nd Jan 2016, 12:13 PM

Shubham Jain

arrays java

0 Votes

What's the extact difference between scanner and bufferreader...which we need to use?

2nd Jan 2016, 6:01 AM

Khandaker Maria Shabnam

files java

0 Votes