Most viewed questions in Java

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1 answer

How can we convert Strings to and from UTF8 byte arrays?

To convert STring to byte[]: String s = ...READ MORE

Jun 21, 2018 in Java by Akrati
 • 3,190 points • 1,621 views
0 votes
1 answer

How to retrieve current stack trace?

Yes, in Java we do have a ...READ MORE

May 17, 2018 in Java by code.reaper12
 • 3,500 points • 1,618 views
0 votes
1 answer

What is an Operand Stack in Java?

The basic utility of Operand Stack are ...READ MORE

Mar 7, 2019 in Java by Priyaj
 • 58,090 points • 1,607 views
0 votes
1 answer

Which is the best GUI designer for Eclipse?

Windows Builder Pro is the best GUI ...READ MORE

May 21, 2018 in Java by Akrati
 • 3,190 points • 1,606 views
0 votes
2 answers

Why it is not possible to define a static method in a Java interface?

Interfaces are concerned with polymorphism which is ...READ MORE

Aug 27, 2019 in Java by Sirajul
 • 59,230 points • 1,605 views
0 votes
1 answer

Examples of GoF Design Patterns in Java's core libraries

Observer pattern throughout whole swing (Observable, Observer) MVC also ...READ MORE

Jun 27, 2018 in Java by developer_1
 • 3,320 points • 1,604 views
0 votes
0 answers

How execute JSP web page in Intellij

Hi all, I am new to java and ...READ MORE

Jan 24, 2019 in Java by Abraham
 • 120 points
edited Jul 11, 2023 by Khan Sarfaraz • 1,600 views
0 votes
1 answer

Error: 'android.os.NetworkOnMainThreadException'?

Hello, I solved this problem using a new Thread. Thread ...READ MORE

May 28, 2020 in Java by Niroj
 • 82,880 points • 1,599 views
0 votes
2 answers

When and how to use Super() keyword in Java?

super() is used to call immediate parent. super() can be ...READ MORE

Jul 9, 2018 in Java by Sushmita
 • 6,910 points • 1,596 views
0 votes
1 answer

How can we run the .jar file by double clicking on windows 7 (64)?

Use the following method to run the ...READ MORE

Jun 28, 2018 in Java by sharth
 • 3,370 points • 1,593 views
0 votes
1 answer

Describe Heavy Weight Components Mean In Java Programming?

Heavy weight components like Abstract Window Toolkit ...READ MORE

Nov 28, 2018 in Java by Frankie
 • 9,830 points • 1,590 views
0 votes
1 answer

Error:Android SDK installation doesn't find JDK

Hii @kartik, It appears as if whoever posted ...READ MORE

May 25, 2020 in Java by Niroj
 • 82,880 points • 1,586 views
0 votes
1 answer

Error:Unable to execute dex: Multiple dex files define

Hello @kartik, The Solution for me was just ...READ MORE

May 25, 2020 in Java by Niroj
 • 82,880 points • 1,585 views
0 votes
1 answer

Can't access static fields in inner classes in Java

Well, the major idea behind this concept ...READ MORE

Oct 9, 2018 in Java by anto.trigg4
 • 3,440 points • 1,584 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 • 1,581 views
0 votes
0 answers

Restsharp support webservice automationtesting like rest

Hi , Restsharp support webservice automationtesting like rest ...READ MORE

Aug 9, 2020 in Java by anonymous
 • 3,190 points • 1,576 views
0 votes
2 answers

how to increase heap size in java?

Here is how you can increase the ...READ MORE

Aug 23, 2019 in Java by Sirajul
 • 59,230 points • 1,573 views
0 votes
1 answer

Render HTML to an image

To answer your question, there are a ...READ MORE

Feb 8, 2022 in Java by Soham
 • 9,700 points • 1,568 views
0 votes
0 answers

Error occurred during initialization of boot layer FindException: Module not found

I executed this command line: java --module-path bin ...READ MORE

May 13, 2022 in Java by Kichu
 • 19,050 points • 1,567 views
0 votes
1 answer

@Qualifier annotation in Spring Framework

When you create more than one bean ...READ MORE

Sep 10, 2018 in Java by code.reaper12
 • 3,500 points • 1,566 views
+2 votes
0 answers

How can I assign unicode to a variable in JavaScript, but have the script then populate a PDF field not in the unicode, but in the Chinese characters the unicode represents?

Here is the code I am using. ...READ MORE

Jan 13, 2020 in Java by anonymous
 • 140 points • 1,559 views
0 votes
0 answers

Provider class org.springframework.context.index.processor.CandidateComponentsIndexer not in module

package spring.demo; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Client { public ...READ MORE

Jul 4, 2020 in Java by DUGASANI
 • 120 points • 1,557 views
0 votes
1 answer

What are the Foreign key constraints in Android using SQLite

You can use, Foreign key constraints with ...READ MORE

Aug 24, 2018 in Java by geek.erkami
 • 2,680 points • 1,557 views
0 votes
1 answer

'javac' is not recognized as an internal or external command, operable program or batch file.

Hey @Paridhi, check this out https://www.edureka.co/community/4800/unable-resolve-error-recognized-internal-external-command This should solve ...READ MORE

Apr 20, 2020 in Java by Sirajul
 • 59,230 points • 1,533 views
0 votes
1 answer

Use annotation for excluding specific fields from serialization

Simply mark the desired fields with the ...READ MORE

Feb 1, 2019 in Java by developer_1
 • 3,320 points • 1,533 views
0 votes
1 answer

How to calculate method execution time in Java ?

Use the following code : new Timer(""){{ ...READ MORE

May 25, 2018 in Java by Rishabh
 • 3,620 points • 1,532 views
0 votes
0 answers

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 • 1,530 views
0 votes
2 answers

What is the easiest way to iterate through the characters of a string in Java?

There are two approaches to this: for(int i ...READ MORE

Aug 19, 2019 in Java by Sirajul
 • 59,230 points • 1,520 views
+1 vote
0 answers

Initially autowired object has value,it becomes null after paging(using JSF 2.2 and spring 4.01.)

i'm trying to create basic crud operations ...READ MORE

Jul 5, 2019 in Java by swats
 • 1,517 views
0 votes
1 answer

Programmatically closing a JFrame

If you want the GUI to behave ...READ MORE

Jun 21, 2018 in Java by Parth
 • 4,630 points • 1,517 views
0 votes
1 answer

How to perform Java 256 bit AES Password Based Encryption?

/* Derive the key, given password and ...READ MORE

Jun 21, 2018 in Java by Akrati
 • 3,190 points • 1,515 views
0 votes
2 answers

Send HTTP request in Java

import com.google.api.client.http.GenericUrl; import com.google.api.client.http.HttpRequest; import com.google.api.client.http.HttpResponse; import com.google.api.client.http.HttpTransport; import com.google.api.client.http.javanet.NetHttpTransport; import java.io.IOException; import ...READ MORE

Aug 3, 2018 in Java by samarth295
 • 2,220 points • 1,512 views
0 votes
1 answer

Could not include JAR files

Hey, @Boopathy, Which command do you use to ...READ MORE

Oct 27, 2020 in Java by Gitika
 • 65,910 points • 1,506 views
0 votes
1 answer

How to getters and setters work in java

In Java, getter and setter are two ...READ MORE

Jun 1, 2018 in Java by Daisy
 • 8,120 points • 1,491 views
0 votes
0 answers

How to handle simultaneous requests using springboot?

A gateway and load balancer built using ...READ MORE

Feb 9, 2020 in Java by anonymous
 • 19,610 points • 1,479 views
0 votes
1 answer

How to encrypt string in Java

String s1="sharth"; char[] s2=s1.toCharArray(); int s3= s2.length; ...READ MORE

Jul 24, 2018 in Java by scarlett
 • 1,290 points • 1,476 views
0 votes
1 answer

Install Java on Ubuntu

Hi @Anvi, to install Java on Ubuntu, ...READ MORE

Mar 1, 2019 in Java by Pratibha
 • 3,690 points • 1,465 views
0 votes
1 answer

What is blank final variable?

A final variable in Java can be ...READ MORE

Nov 29, 2018 in Java by Frankie
 • 9,830 points • 1,462 views
0 votes
0 answers

CCAvenue Payment Error code 10002 Merchant Authentication failed. Don't worry... It happens to the best of us

I used the code which is provided ...READ MORE

May 24, 2022 in Java by Kichu
 • 19,050 points • 1,459 views
0 votes
1 answer

Protocol handler initialization failed:

For me the protocol handler initialization failed ...READ MORE

Feb 17, 2022 in Java by Aditya
 • 7,680 points • 1,456 views
0 votes
1 answer

Error:“java.lang.OutOfMemoryError: PermGen space” in Maven build

Hello @kartik, When you increased MAVEN_OPTS, you increase the MaxPermSize, ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,880 points • 1,448 views
0 votes
1 answer

@Autowired annotation in Spring Framework

The @Autowired annotation provides more accurate control over where ...READ MORE

Aug 3, 2018 in Java by geek.erkami
 • 2,680 points • 1,447 views
0 votes
1 answer

Why is the Scanner skipping nextLine() after using next() or nextFoo()

public static void main(String[] args) { ...READ MORE

Aug 28, 2018 in Java by samarth295
 • 2,220 points • 1,442 views
0 votes
1 answer

Affinity in Java thread

Well, as far as I know, I ...READ MORE

Oct 31, 2018 in Java by code.reaper12
 • 3,500 points • 1,439 views
0 votes
1 answer

Not able to resolve Datatable SCRIPT5007: Unable to set property '_DT_CellIndex' of undefined or null reference

I had experienced the same error! What ...READ MORE

Feb 16, 2022 in Java by Soham
 • 9,700 points • 1,437 views
0 votes
1 answer

Java anonymous code blocks

The anonymous code blocks in Java are ...READ MORE

Sep 5, 2018 in Java by anto.trigg4
 • 3,440 points • 1,437 views
0 votes
1 answer

In Java, how to find out the min/max values from array of primitive data types?

import java.util.Arrays; import java.util.Collections; import org.apache.commons.lang.ArrayUtils; public class MinMaxValue { ...READ MORE

Jun 12, 2018 in Java by Daisy
 • 8,120 points • 1,431 views
+1 vote
1 answer

Maximum memory usage for JVM

I guess, you can try using the ...READ MORE

Nov 14, 2018 in Java by 93.lynn
 • 1,600 points • 1,430 views
0 votes
1 answer

What does Java option -Xmx stand for?

-Xmxn: It specifies the maximum size, in bytes, ...READ MORE

May 9, 2018 in Java by sharth
 • 3,370 points • 1,429 views
+1 vote
2 answers

How to use try & catch block in Java?

Hey @Jino, Using try catch block for your ...READ MORE

Dec 21, 2018 in Java by Nabarupa
 • 1,419 views
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