Java Questions | Edureka Community

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Convert a number into a Roman numeral in JavaScript

What is the best way to convert integers to roman numerals? function romanNumeralGenerator (int) { } Consider the following sample inputs and outputs: 1 = "I" 5 = ...READ MORE

Dec 8, 2022 in Java by Nicholas
• 7,760 points • 911 views

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How to stop timer in javascript?

I'd want to end a timer by clicking a button, but I can't figure out how. I tried using clearInterval() to halt a timer, but I'm not sure whether it was called correctly. This is my current code. <html> <head> <title>Bootstrap</title> ...READ MORE

Dec 8, 2022 in Java by Nicholas
• 7,760 points • 857 views

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2 answers

What is the difference between Set and List in java?

List is an ordered sequence of elements. ...READ MORE

Apr 26, 2018 in Java by Akrati
• 3,190 points • 63,380 views

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Loop over an array in JavaScript

How can I use JavaScript to loop ...READ MORE

Dec 9, 2022 in Java by Nicholas
• 7,760 points • 643 views

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When to use promise.all()?

What is/are the appropriate scenario(s) for using promise.all() OR Is there a better way to utilize promise.all()? Should it be used ideally just when all of the promise objects are of the same or comparable type? The only one that comes to mind is: Use promise.all() if you want to resolve the promise only if all of ...READ MORE

Dec 12, 2022 in Java by Nicholas
• 7,760 points • 461 views

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1 answer

Execution Failed for task :app:compileDebugJavaWithJavac in Android Studio

In Android Studio 3.1, you can see ...READ MORE

Feb 17, 2022 in Java by Aditya
• 7,680 points • 13,266 views

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How do I get the current time only in JavaScript

In JavaScript, how can I retrieve the ...READ MORE

Dec 9, 2022 in Java by Nicholas
• 7,760 points • 565 views

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How does the "this" keyword work, and when should it be used?

I'm trying to figure out what the&nbs ...READ MORE

Dec 7, 2022 in Java by Nicholas
• 7,760 points • 630 views

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JavaScript: undefined !== undefined?

When I first tried to access Facebook API operations after integrating Facebook Connect with Tersus, I received the error messages Invalid Enumeration Value and Handler already exists. It was discovered that the source of the problem was object.x === undefined When there is no property 'x' in 'object,' returns false. I solved the problem by substituting normal equality for rigorous equality in two Facebook functions: FB.Sys.isUndefined = function(o) { return ...READ MORE

Dec 9, 2022 in Java by Nicholas
• 7,760 points • 495 views

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Const in JavaScript: when to use it and is it necessary?

In JavaScript, I recently came across the ...READ MORE

Dec 8, 2022 in Java by Nicholas
• 7,760 points • 463 views

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How is a JavaScript hash map implemented?

I'm using OpenLayers right now and need ...READ MORE

Dec 7, 2022 in Java by Nicholas
• 7,760 points • 470 views

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Which is better: <script type="text/javascript">...</script> or <script>...</script>

Which is more effective or convenient ...READ MORE

Dec 9, 2022 in Java by Nicholas
• 7,760 points • 381 views

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1 answer

Check if input is number or letter javascript

The isNaN function can be used to ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points • 1,381 views

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How do I remove an object from an array with JavaScript?

I have a JavaScript object that looks ...READ MORE

Dec 8, 2022 in Java by Nicholas
• 7,760 points • 389 views

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Best place to insert JavaScript within a HTML document

Where should the javascript code go? ...READ MORE

Dec 6, 2022 in Java by Nicholas
• 7,760 points • 464 views

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How to add days to Date?

How can I add days to the ...READ MORE

Dec 8, 2022 in Java by Nicholas
• 7,760 points • 383 views

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How to check if an object is a Promise?

Whether it's an ES6 Promise, a Bluebird ...READ MORE

Dec 6, 2022 in Java by Nicholas
• 7,760 points • 460 views

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What is the meaning of polyfills in HTML5?

Actually, I have no idea what polyfills ...READ MORE

Dec 7, 2022 in Java by Nicholas
• 7,760 points • 393 views

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Check if a value is an object in JavaScript

How do you check if a value ...READ MORE

Dec 7, 2022 in Java by Nicholas
• 7,760 points • 384 views

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How do I link a JavaScript file to a HTML file?

How should a JavaScript file be linked ...READ MORE

Dec 6, 2022 in Java by Nicholas
• 7,760 points • 406 views

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What is 'Currying'?

I've seen references to curried functions in ...READ MORE

Dec 6, 2022 in Java by Nicholas
• 7,760 points • 343 views

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1 answer

The difference between Classes, Objects, and Instances

A class is a type of blueprint ...READ MORE

Jun 7, 2022 in Java by pranav
• 2,590 points • 8,038 views

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could not extract ResultSet in hibernate

I am getting this exception: "HTTP Status ...READ MORE

May 20, 2022 in Java by Kichu
• 19,040 points • 8,823 views

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1 answer

How to get current formatted date dd/mm/yyyy in Javascript and append it to an input

The stringent equality operator (===) works exactly like the abstract equality operator (==), with the exception that no type conversion is performed, and the types must be the same to be regarded equal. Javascript Tutorial on Comparison Operators After performing any required type transformations, the == operator will check for equality. Because the === operator does not perform the conversion, it will simply return false if two values are not of the same type. Both are equally fast. "abc" == new String("abc") ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points • 1,478 views

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1 answer

How to draw a circle in HTML5 Canvas using JavaScript?

Here's how to draw a circle in ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points • 962 views

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1 answer

Unrecognized SSL message, plaintext connection? Exception

It is due to the fact that ...READ MORE

Feb 22, 2022 in Java by Aditya
• 7,680 points • 12,305 views

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0 answers

Can you control GIF animation with Javascript?

Is it feasible to use Javascript to ...READ MORE

Nov 16, 2022 in Java by Nicholas
• 7,760 points • 784 views

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0 answers

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyController':

I am trying to create a spring ...READ MORE

May 9, 2022 in Java by Kichu
• 19,040 points • 8,987 views

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Why doesn't importing java.util.* include Arrays and Lists?

I am using java on debian 5 java ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points • 739 views

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What is the difference between contiguous and non-contiguous arrays?

In the numpy manual about the reshape() function, it ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points • 715 views

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Javascript counting number of objects in object

I have an object something like: Object {0=Object, ...READ MORE

Nov 17, 2022 in Java by Nicholas
• 7,760 points • 621 views

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1 answer

How do I declare and initialize an array in Java?

To declare and initialize an array in ...READ MORE

Jun 22, 2023 in Java by Khan Sarfaraz
• 700 points • 458 views

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1 answer

Using setTimeout to delay timing of jQuery actions

The JavaScript setTimeout () function is used ...READ MORE

May 30, 2022 in Java by gaurav
• 23,260 points • 8,013 views

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Arrays.fill with multidimensional array in Java

Without using a loop, how can I ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points • 615 views

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0 answers

Generating Fibonacci Sequence

var x = 0; var y = 1; var ...READ MORE

Nov 17, 2022 in Java by Nicholas
• 7,760 points • 564 views

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0 answers

How do JavaScript closures work?

How would you explain JavaScript closures to ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points • 635 views

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0 answers

How to detect #enable-force-dark flag on Chrome v78+ using JavaScript?

I just developed and implemented a dark ...READ MORE

Nov 17, 2022 in Java by Nicholas
• 7,760 points • 496 views

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0 answers

Javascript counting number of objects in object

I have an object something like: Object {0=Object, ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points • 569 views

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What is the use of the JavaScript 'bind' method?

What is the use of bind() in ...READ MORE

Nov 17, 2022 in Java by Nicholas
• 7,760 points • 451 views

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1 answer

Why firefox is written in C++ and javascript UI?

First off, Java and JavaScript are entirely ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points • 812 views

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1 answer

Check if a variable is a string in JavaScript

This is what I've found to be ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points • 464 views

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0 answers

How to create an array containing 1...N

I'm looking for alternatives to the following for creating a JavaScript array with values ranging from 1 to N, where N is only known at runtime. var foo = []; for (var i = ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points • 478 views

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What is DOM Event delegation?

Can anyone please explain event delegation in ...READ MORE

Nov 16, 2022 in Java by Nicholas
• 7,760 points • 424 views

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How to round to at most 2 decimal places, if necessary

I'd like to round at most two ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points • 715 views

0 votes

1 answer

How to send an email from JavaScript

Javascript does not natively support email sending. However, you may access the user's mail client: window.open('mailto:test@example.com'); There are also some parameters to pre-fill ...READ MORE