Most answered questions in Java

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java.net.SocketException: Connection reset

I was having an error when I ...READ MORE

May 8, 2022 in Java by Kichu
 • 19,050 points • 759 views
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Spring Maven clean error - The requested profile "pom.xml" could not be activated because it does not exist

I am  getting this message when I ...READ MORE

May 8, 2022 in Java by Kichu
 • 19,050 points • 7,179 views
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Eclipse "Error: Could not find or load main class"

I have a project on my laptop ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,700 points • 1,698 views
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java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver

I am getting this exception when I ...READ MORE

May 7, 2022 in Java by narikkadan
 • 63,700 points • 2,112 views
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Exception in thread "main" java.lang.Error: Unresolved compilation problems

I am facing issues importing classes and ...READ MORE

May 7, 2022 in Java by narikkadan
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Is hiding implementation detail Encapsulation or Abstraction?

I have seen some people defining abstraction ...READ MORE

May 6, 2022 in Java by narikkadan
 • 63,700 points • 2,531 views
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How to round up integer division and have int result in Java?

I am working on a code to ...READ MORE

May 5, 2022 in Java by Kichu
 • 19,050 points • 1,950 views
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CreateProcess error=2, The system cannot find the file specified

I have written a java program to ...READ MORE

May 5, 2022 in Java by Kichu
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Javamail Could not convert socket to TLS GMail

I want to send an email using ...READ MORE

May 2, 2022 in Java by Kichu
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What are the differences between a HashMap and a Hashtable in Java?

What are the differences between a HashMap and a Hashtable in ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 260 views
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What is the default access specifier in Java?

I just started reading a Java book ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 254 views
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When to use LinkedList over ArrayList in Java?

I've always been one to simply use: List<String> ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 272 views
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Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?

Java doesn't allow multiple inheritance, but it ...READ MORE

Apr 26, 2022 in Java by Rahul
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What is a NullPointerException, and how do I fix it?

What are Null Pointer Exceptions (java.lang.NullPointerException) and ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 368 views
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How do you use the ? : (conditional) operator in JavaScript?

In simple words, what is the ?: ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 237 views
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Convert integer to string

Given a number: int number = 1234; Which would ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 285 views
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window.location.href and window.open () methods in JavaScript

What is the difference between window.location.href and ...READ MORE

Apr 26, 2022 in Java by Rahul
 • 3,380 points • 483 views
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Comparing java.utilDate with LocalDate in java

I have a method wherein have to ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 385 views
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How to split a string in Java

I have a string, "004-034556", that I want ...READ MORE

Apr 21, 2022 in Java by Rahul
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Reversing an Array in Java [duplicate]

If I have an array like this: 1 ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 278 views
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The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path [duplicate]

I have a project created by Maven ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 1,371 views
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How do I "decompile" Java class files? [closed]

What program can I use to decompile ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 410 views
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Java 11 JDK for Windows 7 32-bit system

I wanted to install Java 11 on ...READ MORE

Apr 21, 2022 in Java by Rahul
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How to decode jwt token in javascript without using a library?

How can I decode the payload of ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 1,319 views
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Java inner class and static nested class

What is the main difference between an ...READ MORE

Apr 21, 2022 in Java by Rahul
 • 3,380 points • 230 views
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For-each over an array in JavaScript

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

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 325 views
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Simplest and understandable example of volatile keyword in Java

I'm reading about volatile keyword in Java and completely ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 203 views
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What is a JavaBean exactly?

I understood, I think, that a "Bean" ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 219 views
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How does the Java 'for each' loop work?

Consider: List<String> someList = new ArrayList<String>(); // add "monkey", ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 234 views
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Data access object (DAO) in Java

I was going through a document and ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 491 views
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How to set XML Attribute inside XML Element in Java Pojo Class - JAVX

How can I get this Output Response? <Response> ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 2,735 views
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public static void main(String arg[ ] ) in java is it fixed?

I was recently asked in an exam ...READ MORE

Apr 19, 2022 in Java by Rahul
 • 3,380 points • 598 views
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Change date format in a Java string

I've a String representing a date. String date_s = "2011-01-18 ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 253 views
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How to make a new List in Java

We create a Set as: Set myset = new HashSet() How ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 242 views
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What does "javascript:void(0)" mean?

<a href="javascript:void(0)" id="loginlink">login</a> I've seen such hrefs many ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 225 views
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Reverse a string in Java

I have "Hello World" kept in a ...READ MORE

Apr 14, 2022 in Java by Rahul
 • 3,380 points • 226 views
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What is the !! (not not) operator in JavaScript?

I saw some code that seems to ...READ MORE

Apr 13, 2022 in Java by Rahul
 • 3,380 points • 249 views
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Unscramble Letters in Java - Get all possible combinations of the letters

I am currently an AP Computer Science ...READ MORE

Apr 13, 2022 in Java by Rahul
 • 3,380 points • 690 views
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How can I get bootstrap version via javascript?

Is there any way to get bootstrap ...READ MORE

Apr 13, 2022 in Java by Rahul
 • 3,380 points • 464 views
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Clickable span not calling javascript even though w3school example works

I have a clickable span element that ...READ MORE

Apr 13, 2022 in Java by Rahul
 • 3,380 points • 3,881 views
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Testing questions and answer

This category is home to all kinds ...READ MORE

Feb 24, 2022 in Java by anonymous
 • 120 points • 249 views
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jQuery.click() vs onClick

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

Feb 8, 2022 in Java by Rahul
 • 9,670 points • 517 views
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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 • 225 views
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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 • 284 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 • 457 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 • 456 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 • 368 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 • 1,537 views
+1 vote
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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 • 374 views
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I have Added all External JAR files but driver not found exception occured

Exception in thread "main" java.lang.Error: Unresolved compilation ...READ MORE

Nov 29, 2020 in Java by Boopathy
 • 370 points • 722 views
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