Trending questions in Java

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How do I join two lists in Java?

In Java 8: List<String> newList = Stream.concat(listOne.stream(), listTwo.stream()) ...READ MORE

Dec 30, 2020 in Java by Gitika
 • 65,730 points • 1,067 views
0 votes
1 answer

How to create create an ArrayList from array?

new ArrayList<>(Arrays.asList(array)); READ MORE

Dec 21, 2020 in Java by Gitika
 • 65,730 points • 1,285 views
0 votes
1 answer

How does the Java 'for each' loop work?

for (Iterator<String> i = someIterable.iterator(); i.hasNext();) { ...READ MORE

Dec 22, 2020 in Java by Gitika
 • 65,730 points • 1,156 views
0 votes
1 answer

Avoiding NullPointerException in Java

This to me sounds like a reasonably ...READ MORE

Dec 21, 2020 in Java by Gitika
 • 65,730 points
edited Nov 13, 2024 by Khan Sarfaraz • 1,170 views
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0 answers

How to store and fetch nested json data from dynamodb in java

I want to maintain a book library. ...READ MORE

Sep 7, 2020 in Java by saswat
 • 120 points
edited Sep 7, 2020 by Gitika • 5,718 views
0 votes
1 answer

How to set path if java is installed in E drive or D drive rather than c

Hello, @Amazing, It doesn't really matter where you ...READ MORE

Sep 1, 2020 in Java by Roshni
 • 10,440 points
edited Jul 4, 2023 by Khan Sarfaraz • 5,873 views
0 votes
0 answers

I want to switch from technical support to java developer after working 1.6 years in support. Is that possible?

i have working as an administrator and ...READ MORE

Jan 8, 2021 in Java by Edureka
edited Mar 4, 2025 • 325 views
0 votes
1 answer

Why is subtracting these two times (in 1927) giving a strange result?

In TZDB 2014f, the time of the ...READ MORE

Dec 21, 2020 in Java by Gitika
 • 65,730 points • 991 views
0 votes
0 answers

what is cannot find symbol this(SimpleTimeLimiter.create(THREAD_POOL));

Hi, Through command line, I'm trying to compile ...READ MORE

Nov 6, 2020 in Java by zaraaq
 • 270 points
edited Nov 6, 2020 by Gitika • 2,900 views
0 votes
1 answer

Can i know where is java logs on centos 7?

Hey! Have you checked <user.home>/.java/deployment/log ? READ MORE

Oct 20, 2020 in Java by Kiya
 • 3,544 views
0 votes
1 answer

object references an unsaved transient instance - save the transient instance before flushing

You should add cascade="all" (if using xml) ...READ MORE

Sep 26, 2018 in Java by Parth
 • 4,640 points • 35,986 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
 • 65,730 points • 2,989 views
0 votes
1 answer

How to determine programmatically the current active profile using Spring boot ?

Hello, It doesn't matter is your app Boot ...READ MORE

May 21, 2020 in Java by Niroj
 • 82,800 points
edited Mar 4, 2022 by Sarfaraz • 9,850 views
0 votes
0 answers

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 • 1,493 views
0 votes
1 answer

What does Animal a = (Animal) data[0]; do?

Hello @zaraaq , You can refer this for your ...READ MORE

Dec 2, 2020 in Java by Niroj
 • 82,800 points • 1,141 views
0 votes
1 answer

How to Install Java in Windows system?

Hi@akhtar, You can follow the below-given steps to install ...READ MORE

Jul 7, 2020 in Java by MD
 • 95,460 points • 7,405 views
0 votes
1 answer

How to launch Google Maps Directions via an intent on Android?

Hello @kartik, If you are interested in showing the ...READ MORE

May 25, 2020 in Java by Niroj
 • 82,800 points • 9,221 views
0 votes
0 answers

Apache maven vs Eclipse maven plugin

Hi, I want to install maven but don't ...READ MORE

Nov 25, 2020 in Java by zaraaq
 • 270 points • 1,238 views
0 votes
1 answer

How to parse JSON Array in Android?

Hello @kartik, use the following snippet to parse ...READ MORE

May 26, 2020 in Java by Niroj
 • 82,800 points • 8,863 views
0 votes
1 answer

How to configure encoding in Maven?

Hello @kartik, I use some reporting plugins. In ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,800 points • 8,177 views
0 votes
2 answers

How to log SQL statements in Spring Boot?

HI.. try using this in your properties file: logging.level.org. ...READ MORE

Sep 25, 2020 in Java by SRI
edited Sep 25, 2020 by Sirajul • 5,769 views
0 votes
0 answers

Trying to avoid detection using selenium chrome driver (Java)

I am trying to do an automated ...READ MORE

Jul 14, 2020 in Java by laiman
 • 330 points • 6,001 views
0 votes
2 answers

Fetch list of in-between dates using Java

BiFunction<LocalDate, LocalDate, List<CovidData>> stateDataBetweenDates = (startDate, endDate) ...READ MORE

Jul 9, 2022 in Java by Aqueeb Khan
edited Mar 5, 2025 • 7,134 views
0 votes
0 answers

create multiple excel sheets.xlsx based on each iteration

Prob : I have a method executeunixcommand ...READ MORE

Jul 14, 2020 in Java by Jyra
 • 580 points • 5,673 views
0 votes
1 answer

GSON throwing “Expected BEGIN_OBJECT but was BEGIN_ARRAY”?

This will work: ChannelSearchEnum[] enums = gson.fromJson(yourJson, ChannelSearchEnum[].class); But ...READ MORE

Dec 26, 2018 in Java by Sushmita
 • 6,920 points • 30,070 views
0 votes
1 answer

how to serially execute selenium maven project?

Hi, @Beigi, Do check you have all the ...READ MORE

Oct 27, 2020 in Java by Nisha
 • 1,153 views
0 votes
1 answer

Java replace : replace all charecters with space except the matched string like "test"

Hi, @jyra, You can go through this example:  String ...READ MORE

Oct 14, 2020 in Java by Gitika
 • 65,730 points • 1,550 views
0 votes
1 answer

how to get latest modified object or folder in s3 bucket in java.

Here's what you could probably try: List all ...READ MORE

Apr 6, 2020 in Java by Liana
 • 9,751 views
0 votes
1 answer

how to get cache memory size of a application in android

To find the size of the cache ...READ MORE

Sep 4, 2020 in Java by Rajiv
 • 8,870 points • 3,112 views
0 votes
1 answer

Error: Could not create the Java Virtual Machine Mac OSX Mavericks

Hello @kartik, Normally this error occurs when you ...READ MORE

May 21, 2020 in Java by Niroj
 • 82,800 points • 7,663 views
0 votes
1 answer

How can I create an executable JAR with dependencies using Maven?

Hello @kartik, You can use the dependency-plugin to ...READ MORE

May 28, 2020 in Java by Niroj
 • 82,800 points • 7,165 views
0 votes
2 answers

I want list of date of every week based on pass dynamically "Mon ,Tue, Wed, Thu, Fri, Sat, Sun" between startDate and endDate using Java 8 LocaleDate

public List<LocalDate> getWeeklyDateByStringofDays(String daysOfWeek, LocalDate startDate, ...READ MORE

Sep 14, 2020 in Java by anonymous
 • 190 points • 2,334 views
0 votes
1 answer

How to unzip files programmatically in Android?

Hello @kartik, This is my unzip method, which ...READ MORE

May 25, 2020 in Java by Niroj
 • 82,800 points • 7,146 views
+1 vote
2 answers

Java: Nested Methods

public class ObjClass {     ObjClass anyMethod() ...READ MORE

Jan 19, 2020 in Java by zemiak
 • 15,845 views
0 votes
1 answer

How to set JDK in Eclipse?

To manage the list of compilers go ...READ MORE

Jan 3, 2019 in Java by Daisy
 • 8,140 points • 28,978 views
0 votes
1 answer

How to use an existing database with an Android application?

Hello @kartik, If you are having pre built ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,800 points • 3,913 views
0 votes
2 answers

How can I solve java.lang.NoClassDefFoundError in Java?

NoClassDefFoundError means that the class is present ...READ MORE

Sep 11, 2018 in Java by Sushmita
 • 6,920 points • 35,652 views
0 votes
1 answer

Error: getExtractedText on inactive InputConnection warning on android

Hello @kartik, The warning appeared when the soft ...READ MORE

May 26, 2020 in Java by Niroj
 • 82,800 points • 6,212 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 • 2,933 views
0 votes
0 answers

I need to Post api to database using java in intellij. After testing sample api through postman i got an Sql exception saying Syntax error at or near ',' Please tell me where i made a mistake

public Result setModelMasterParams(){         try{             long tenantId = request().getHeader("tenant_id")==null                     || request().getHeader("tenant_id").equalsIgnoreCase("")                     || ...READ MORE

Aug 19, 2020 in Java by Sriram
 • 120 points
recategorized Aug 19, 2020 by Niroj • 2,452 views
0 votes
1 answer

Error:jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class

Hello @kartik, The servlet API .jar file must ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,800 points • 5,465 views
0 votes
1 answer

How to get an enum value from a string value in Java?

Hello @kartik, Yes, Blah.valueOf("A") will give you Blah.A. Note that the name ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,800 points • 2,999 views
0 votes
1 answer

How to add local jar files to a Maven project?

Hello @kartik, You can add local dependencies directly ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,800 points • 2,964 views
0 votes
1 answer

Error:The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path

Hello @kartik, Include servlet-api-3.1.jar in your dependencies. Maven <dependency> ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,800 points • 5,235 views
0 votes
1 answer

What are the different types of database testing?

There are mainly two types of database 1.Flat ...READ MORE

Sep 21, 2021 in Java by Kriti
edited Mar 5, 2025 • 3,370 views
0 votes
1 answer

How to get the current working directory in Java?

Hello, Using java.nio.file.Path and java.nio.file.Paths, you can do the following to ...READ MORE

May 28, 2020 in Java by Niroj
 • 82,800 points • 5,438 views
0 votes
1 answer

Error:The method must override a superclass method after importing a project into Eclipse

Hello @kartik, This problem happened when I imported ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,800 points • 2,693 views
0 votes
1 answer

Error:java.lang.UnsupportedClassVersionError: Unsupported major.minor version

Hello @kartik, This error means you're trying to ...READ MORE

Jul 28, 2020 in Java by Niroj
 • 82,800 points • 2,598 views
0 votes
1 answer

Error: setOnItemClickListener cannot be used with a spinner

Hello @kartik, See the first line of your ...READ MORE

Jun 1, 2020 in Java by Niroj
 • 82,800 points • 4,929 views
0 votes
1 answer

Error:Maven Unable to locate the Javac Compiler in:

Hello @kartik, Go to Window -> Preferences... -> ...READ MORE

Jun 3, 2020 in Java by Niroj
 • 82,800 points • 4,747 views
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