Most voted questions in Java

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Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 63 path $.data

Here i am using retrofit post request:- RequestBody ...READ MORE

Apr 24, 2020 in Java by anonymous
 • 120 points • 2,395 views
0 votes
1 answer

What Kind of Files IOC Container can Read other than XML directly or Indirectly?

Hi, @Ferry, The configuration metadata is nothing but bean ...READ MORE

Apr 23, 2020 in Java by Gitika
 • 65,910 points • 665 views
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0 answers

How to manage two JRadioButtons in java so that only one of them can be selected at a time?

How to manage two JRadioButtons in java ...READ MORE

Apr 21, 2020 in Java by kartik
 • 37,510 points • 487 views
0 votes
1 answer

How to call setUndecorated() after a frame is made visible?

Hello kartik, You can Try: dispose(); setUndecorated(true); setVisible(true); Check it Out. Hope ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 1,293 views
0 votes
1 answer

How to add tabs to JTabbedPane using WindowBuilder?

Hii, You can just find out by given ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 951 views
0 votes
1 answer

How to make JTable both AutoResize and horizontall scrollable?

Hello @kartik, If for some reason customising JTable ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 1,290 views
0 votes
1 answer

How to add action listener that listens to multiple buttons?

Hii, modified form of the source based on ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 8,132 views
0 votes
1 answer

How could I implement autocompletion using Swing?

Hello, You can try out this: import java.awt.*; import java.awt.event.*; import ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 388 views
0 votes
1 answer

How to implement draggable tab using Java Swing?

Hello kartik, setAcceptor(TabAcceptor a_acceptor) should let the consumer code ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 961 views
0 votes
1 answer

How to open warning/information/error dialog in swing?

Hello, You can try out : import javax.swing.JFrame; import javax.swing.JOptionPane; public ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 1,270 views
0 votes
1 answer

How to set AUTO-SCROLLING of JTextArea in Java GUI?

Hii kartik, When you click anywhere over JTextArea, ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 2,046 views
0 votes
1 answer

How can I set JFrame to appear centered, regardless of monitor resolution?

Hello @kartik, Use setLocationRelativeTo(null) This method has a special effect ...READ MORE

Apr 21, 2020 in Java by Niroj
 • 82,880 points • 1,358 views
0 votes
1 answer

What is definition of an invalid literal?

Hi, @ Stephen, I will explain to you ...READ MORE

Apr 20, 2020 in Java by Gitika
 • 65,910 points • 1,923 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 • 1,542 views
0 votes
0 answers

HOw can i do this?

The department of History has just bought ...READ MORE

Apr 16, 2020 in Java by MIH
 • 150 points • 434 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 • 17,318 views
0 votes
0 answers

how to send a pdf file as a response to frontend?

when a user upload a file to ...READ MORE

Apr 11, 2020 in Java by Abhishek
 • 120 points • 2,917 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
 • 14,820 views
0 votes
1 answer

How to run a Java program from the command line on Windows?

Hello @kartik, In case your Java class is ...READ MORE

Apr 9, 2020 in Java by Niroj
 • 82,880 points • 704 views
0 votes
1 answer

Error: Unable to run mksdcard SDK tool in java?

Hello, If you use  Ubuntu, you can try: sudo apt-get ...READ MORE

Apr 9, 2020 in Java by Niroj
 • 82,880 points • 573 views
0 votes
1 answer

How can we activate JMX on my JVM for access with jconsole?

Hello @kartik, Run your java application with the ...READ MORE

Apr 9, 2020 in Java by Niroj
 • 82,880 points • 1,113 views
0 votes
1 answer

Error:“java.lang.OutOfMemoryError: Java heap space” ?

Hii, Possible causes: Simple configuration issue, where the specified ...READ MORE

Apr 8, 2020 in Java by Niroj
 • 82,880 points • 944 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 • 14,825 views
0 votes
1 answer

How to pass an object from one activity to another on Android?

Hello @kartik, Implement your class with Serializable. Let's ...READ MORE

Apr 8, 2020 in Java by Niroj
 • 82,880 points • 616 views
0 votes
1 answer

What is the reason for no ConcurrentHashSet against ConcurrentHashMap?

Hello, There's no built in type for ConcurrentHashSet because you ...READ MORE

Apr 8, 2020 in Java by Niroj
 • 82,880 points • 1,122 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 • 21,083 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
 • 8,106 views
0 votes
0 answers

If statement not working in AWS Lamnda - S3Event code

Hi, I am using below  lambda function with ...READ MORE

Apr 4, 2020 in Java by Abhishek
 • 280 points • 642 views
0 votes
1 answer

java path not found in window 7

Hey, You can follow these few steps: From the ...READ MORE

Apr 3, 2020 in Java by Gitika
 • 65,910 points • 930 views
0 votes
1 answer

how to do global variable declaration in java

Hello,​ Global varriable which is defined after the ...READ MORE

Apr 3, 2020 in Java by Niroj
 • 82,880 points • 485 views
0 votes
0 answers

Where exactly in the variable file path will I paste the javac file path?

I wrongly placed the javac file in ...READ MORE

Apr 2, 2020 in Java by anonymous
 • 120 points • 567 views
0 votes
1 answer

How to automatically deploy a jar from s3 to aws lambda?

You could probably create a lambda function ...READ MORE

Apr 2, 2020 in Java by Jake
 • 4,132 views
0 votes
0 answers

Sir i already add the connector jar file to the EClipse IDE but still getting the error that driver not found my mysql service is already running on port 3306

READ MORE

Apr 1, 2020 in Java by GB
 • 120 points • 884 views
0 votes
1 answer

What is Modeshape. How can i use this?

ModeShape is an open-source implementation of the JSR-283 specification and ...READ MORE

Mar 30, 2020 in Java by Gitika
 • 65,910 points • 838 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 • 1,495 views
0 votes
0 answers

java regex split string into double numbers and-letters

I am having a problem splitting something ...READ MORE

Nov 14, 2019 in Java by khs
 • 120 points • 1,306 views
0 votes
0 answers

pass datasource for job to AWS Glue client in JAVA

How can i mention datasource for AWS ...READ MORE

Nov 10, 2019 in Java by cheshta
 • 120 points • 663 views
0 votes
1 answer

Java and MySql: Delete database if exists

First, you have to check if the ...READ MORE

Sep 30, 2019 in Java by Kiran
 • 1,935 views
0 votes
1 answer

Java and MySql: Check if database exists

You can get the list of databases ...READ MORE

Sep 30, 2019 in Java by Tina
 • 2,712 views
0 votes
1 answer

How to connect Java to MySql Database?

Make sure you have the MySQL jdbc ...READ MORE

Sep 30, 2019 in Java by Shyam
 • 1,051 views
0 votes
0 answers

why the should be final

Sep 17, 2019 in Java by anonymous
 • 390 views
0 votes
1 answer

What is the difference between main(String[] args) and main(String... args) in Java?

String[] is used to accept a single parameter ...READ MORE

Sep 6, 2019 in Java by Piya
 • 3,466 views
0 votes
1 answer

Handling empty input in swing text box

login_but.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ //System.out.print(F_user.getText()); String username ...READ MORE

Aug 27, 2019 in Java by Nila
 • 1,190 views
0 votes
1 answer

How to get text from text box in Swing?

You can add a Button listener here. ...READ MORE

Aug 27, 2019 in Java by Jishan
 • 1,057 views
0 votes
1 answer

How to create password field in Swing?

Swing provides an object called JPasswordField for ...READ MORE

Aug 27, 2019 in Java by Bruce
 • 443 views
0 votes
1 answer

Create Buttons in Java Swing

First, you will have to create a ...READ MORE

Aug 27, 2019 in Java by Esha
 • 930 views
0 votes
1 answer

Swing Java create Text Box

In the frame, you can use the ...READ MORE

Aug 27, 2019 in Java by Kyle
 • 1,082 views
0 votes
1 answer

How to create text labels in Swing, Java?

In the frame, you can use the ...READ MORE

Aug 27, 2019 in Java by Jimmy
 • 829 views
0 votes
1 answer

Java and MySql: Delete database if exists

First, you have to check if the ...READ MORE

Aug 27, 2019 in Java by Varun
 • 636 views
0 votes
1 answer

Java and MySql: Check if database exists

You can get the list of databases ...READ MORE

Aug 27, 2019 in Java by Kunal
 • 3,994 views
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