Trending questions in Java

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no 'access-control-allow-origin' header is present on the requested resource

The java <class-name> command syntax is one ...READ MORE

Feb 8, 2022 in Java by Soham
 • 9,700 points • 491 views
0 votes
0 answers

jQuery.click() vs onClick

I have a huge jQuery application, and ...READ MORE

Feb 8, 2022 in Java by Rahul
 • 9,670 points • 511 views
0 votes
1 answer

How do I efficiently iterate over each entry in a Java Map?

To answer your questions, use the following ...READ MORE

Feb 8, 2022 in Java by Soham
 • 9,700 points • 418 views
0 votes
1 answer

window.onload vs document.onload

For the window.onload by default, it fires ...READ MORE

Feb 9, 2022 in Java by Rahul
 • 9,670 points • 356 views
0 votes
1 answer

Reverse a string in Java

To answer your question, you can use ...READ MORE

Feb 8, 2022 in Java by Soham
 • 9,700 points • 391 views
0 votes
0 answers

How do I declare and initialize an array in Java?

How do I declare and initialize an ...READ MORE

Feb 8, 2022 in Java by Edureka
 • 120 points • 278 views
0 votes
0 answers

For-each over an array in JavaScript

How can I loop through all the ...READ MORE

Feb 8, 2022 in Java by Rahul
 • 9,670 points • 215 views
0 votes
1 answer

How to redirect to an external URL from controller action in Spring MVC?

Hello @kartik, You can do it with two ...READ MORE

May 22, 2020 in Java by Niroj
 • 82,880 points
edited Mar 4, 2022 by Sarfaraz • 25,255 views
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Javac file not found error.

I'm completely new to java. I spent ...READ MORE

Nov 21, 2021 in Java by anonymous
 • 120 points • 446 views
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how to compare two strings in java?

how to compare two strings in java? READ MORE

Nov 16, 2021 in Java by Naresh
 • 210 points • 441 views
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Exception in thread "main" java.lang.NoClassDefFoundError: org/openqa/selenium/HasAuthentication

Exception in thread "main" java.lang.NoClassDefFoundError: org/openqa/selenium/HasAuthentication at java.base/java.lang.ClassLoader.defineClass1(Native ...READ MORE

Oct 22, 2021 in Java by anonymous
 • 120 points • 1,506 views
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1 answer

Testing question and answer

Testing question and answer. READ MORE

Nov 16, 2021 in Java by anonymous
 • 300 points • 283 views
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how to find lenght of string in java ?

java READ MORE

Nov 12, 2021 in Java by anonymous
 • 210 points • 360 views
+1 vote
0 answers

What happens when we pass one invalid argument and valid argument to mvn command? Eg mvn clean -DskipTests -DNgbuild where -DNgbuild is invalid argument and -DskipTests is valid argument

I execute a command "Mvn clean -DskipTests ...READ MORE

Oct 11, 2021 in Java by anonymous
 • 130 points • 361 views
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3 answers

How to clear the console in Java?

import java.io.IOException; public class chkClearScreen {     public static void ...READ MORE

Aug 26, 2020 in Java by ItsJustRaja
 • 35,304 views
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1 answer

How to run a .java file from command line passing arguments in Maven?

Hello @kartik, You could run: mvn exec:exec -Dexec.args="arg1". This will ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,880 points • 19,918 views
0 votes
1 answer

Gradle - Error Could not find method implementation() for arguments

Hello @kartik, Make sure your gradle version 3.. or ...READ MORE

May 26, 2020 in Java by Niroj
 • 82,880 points • 20,215 views
+1 vote
4 answers

What is a simple way to repeat a string in java?

There is already answer wriiten using StringBuilder ...READ MORE

Dec 16, 2020 in Java by Rajiv
 • 8,910 points • 28,586 views
0 votes
1 answer

How to find the nth prime number in Java?

Here is the code to find nth ...READ MORE

Mar 4, 2019 in Java by Priyaj
 • 58,090 points • 38,228 views
+1 vote
2 answers

Retrieve all the implementations of an interface in Java

Take a look to this example: https://github.com/burningwave/co ...READ MORE

Dec 21, 2019 in Java by Roberto
 • 460 points
edited Jul 7, 2020 by Roberto • 36,631 views
0 votes
1 answer

Convert data in List<JsonNode> to Map <String,String> in Java

Hi, @Jyra, Basically, you can use the object mapper to ...READ MORE

Apr 7, 2020 in Java by Gitika
 • 65,910 points • 20,876 views
0 votes
2 answers

How do I convert a String to an int in Java?

Use the lines of code mentioned below:- String ...READ MORE

Feb 9, 2022 in Java by Soham
 • 9,700 points • 2,611 views
0 votes
1 answer

How to refresh data in ViewPager Fragment ?

Using the ViewPager.OnPageChangeListener is the correct way to go, ...READ MORE

Mar 7, 2019 in Java by developer_1
 • 3,320 points • 36,402 views
0 votes
1 answer

Logger cannot be resolved Java(570425394) Error occured

Hey, @Boopathy, Could you please post your code ...READ MORE

Dec 1, 2020 in Java by Gitika
 • 65,910 points • 8,822 views
0 votes
2 answers

How to convert InputStream to byte array in Java?

The class IOUtils, lib: https://mvnrepository.com/artifact/com ...READ MORE

Sep 24, 2020 in Java by Anthony
 • 14,738 views
0 votes
1 answer

Unsupported major.minor version 52.0

The issue is because of a Java ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 6,133 views
0 votes
2 answers

What is the difference between Map and HashMap in java?

The basic difference is : Map is ...READ MORE

Aug 28, 2019 in Java by Sirajul
 • 59,230 points • 29,032 views
0 votes
2 answers

How to generate a class at runtime?

Yes, I recently met this library which ...READ MORE

Apr 15, 2020 in Java by Edureka
 • 520 points • 17,068 views
0 votes
1 answer

Download a file with Android, and showing the progress in a ProgressDialog

1. Use AsyncTask and show the download progress in ...READ MORE

Dec 23, 2020 in Java by Gitika
 • 65,910 points • 5,656 views
0 votes
1 answer

Removing whitespace from strings in Java

st.replaceAll("\\s+","") removes all whitespaces and non-visible characters (e.g., ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 4,891 views
0 votes
1 answer

Initialization of an ArrayList in one line.

Actually, probably the "best" way to initialize ...READ MORE

Dec 21, 2020 in Java by Gitika
 • 65,910 points • 5,175 views
0 votes
1 answer

Maven project using testng dependecy

Hello @zaraaq, First try to replace the scope ...READ MORE

Nov 25, 2020 in Java by Niroj
 • 82,880 points • 6,310 views
0 votes
2 answers

Resolving PKIX path building failed Error?

You need to add the certificate for App2 to ...READ MORE

Sep 24, 2018 in Java by Sushmita
 • 6,910 points • 42,486 views
0 votes
1 answer

How to set base url for rest in spring boot?

Hello @kartik, Set it up in your application.yml ...READ MORE

May 22, 2020 in Java by Niroj
 • 82,880 points • 13,844 views
+2 votes
1 answer

How to pass dynamic JSON request with parameter in POST request using Rest assured java?

here payload is short you can also ...READ MORE

Jul 23, 2020 in Java by Vivek
 • 19,312 views
0 votes
1 answer

JsonMappingException: No suitable constructor found for type [simple type, class ]: can not instantiate from JSON object?

Hello @kartik, his happens for these reasons: your inner ...READ MORE

Apr 8, 2020 in Java by Niroj
 • 82,880 points • 14,750 views
0 votes
1 answer

Error:java.lang.OutOfMemoryError: Java heap space in Maven

Hello @kartik, Here is the whole config that ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,880 points • 12,088 views
0 votes
3 answers

How to check if a String is numeric in Java?

Check if a string is numeric public class ...READ MORE

Dec 29, 2020 in Java by Carlos
 • 2,281 views
0 votes
1 answer

How to read all files in a folder from Java?

public void listFilesForFolder(final File folder) { ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 1,935 views
0 votes
1 answer

Can't execute jar- file: “no main manifest attribute”

First, it's kind of weird, to see ...READ MORE

Dec 23, 2020 in Java by Gitika
 • 65,910 points • 2,174 views
0 votes
1 answer

How do I count the number of occurrences of a char in a String?

My 'idiomatic one-liner' for this is: int count ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 1,806 views
0 votes
1 answer

How to get comments by given user in Facebook Graph API? Can we get list of comments made by given user?

Hii kartik, You can get the list of ...READ MORE

May 7, 2020 in Java by Niroj
 • 82,880 points • 12,040 views
0 votes
1 answer

How do I save a String to a text file using Java?

If you're simply outputting text, rather than ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points
edited Jul 6, 2023 by Khan Sarfaraz • 1,789 views
0 votes
1 answer

How to install Java 8 on Mac

Oracle has a poor record for making ...READ MORE

Dec 23, 2020 in Java by Gitika
 • 65,910 points • 2,077 views
0 votes
1 answer

Can anyone help me i have been struggling for weeks now to solve this problem

Hello, @Tafadzwa, Any way just navigate to C:\Users\user.gradle\caches\ ...READ MORE

Dec 24, 2020 in Java by Gitika
 • 65,910 points • 2,049 views
0 votes
2 answers

What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association?

JPA mapping annotation can be classified as ...READ MORE

Oct 28, 2020 in Java by bjjj
 • 140 points • 20,329 views
0 votes
1 answer

Implements vs extends: When to use? What's the difference?

Extends is for extending a class. implements are for implementing an interface The difference between ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 1,549 views
0 votes
1 answer

How to convert Java String into byte[]?

The object your method decompressGZIP() needs is a byte[]. So the ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,910 points • 1,274 views
0 votes
1 answer

When to use LinkedList over ArrayList in Java?

LinkedList and ArrayList are two different implementations of the List ...READ MORE

Dec 21, 2020 in Java by Gitika
 • 65,910 points • 1,662 views
0 votes
1 answer

What is a serialVersionUID and why should we use it?

Hello @kartik, SerialVersionUID is a unique identifier for each ...READ MORE

May 28, 2020 in Java by Niroj
 • 82,880 points • 10,561 views
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