What is a NullPointerException and how do I fix it

0 votes
What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them?

What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely?
Apr 26, 2022 in Java by Rahul
 • 3,380 points • 344 views

No answer to this question. Be the first to respond.

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.

Related Questions In Java

0 votes
0 answers

What is a IOException, and how do I fix it?

What is causing java.io.IOException? What does it ...READ MORE

May 19, 2022 in Java by Kichu
 • 19,050 points • 208 views
0 votes
1 answer

How do I fix a NullPointerException?

When you declare a reference variable (i.e. ...READ MORE

answered Apr 13, 2018 in Java by Parth
 • 4,630 points • 689 views
0 votes
2 answers

What is the use of toString method in Java and how can I use it ?

Whenever you require to explore the constructor ...READ MORE

answered Aug 23, 2018 in Java by Daisy
 • 8,120 points • 3,797 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

answered May 28, 2020 in Java by Niroj
 • 82,880 points • 10,561 views
0 votes
0 answers

What is "callback hell" and how and why does RX solve it?

Can someone provide a precise description and ...READ MORE

Nov 9, 2022 in Java by Nicholas
 • 7,760 points • 389 views
0 votes
0 answers

What is TypeScript and why would I use it in place of JavaScript?

Could you kindly explain the TypeScript language? What ...READ MORE

Nov 16, 2022 in Java by Nicholas
 • 7,760 points • 254 views
0 votes
2 answers

How do I get the current date and time using Java?

If you require a time stamp in ...READ MORE

answered Aug 23, 2019 in Java by Sirajul
 • 59,230 points • 2,364 views
0 votes
2 answers

How can I create File and write data in it using Java?

import java.io.BufferedWriter; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; public class WriteFiles{ ...READ MORE

answered Jul 26, 2018 in Java by samarth295
 • 2,220 points • 2,562 views
0 votes
2 answers

How do I read and convert an InputStream object to string type?

You can also use Java Standard Library ...READ MORE

answered Jul 17, 2018 in Java by Sushmita
 • 6,910 points • 16,709 views
0 votes
1 answer

Is it possible to run a java program from command line on windows?How?

  Let's say your file is in C:\myprogram\ Run ...READ MORE

answered Apr 18, 2018 in Java by sophia
 • 1,400 points • 2,374 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP
"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.