What is a `NullPointerException` in Java and when does it occur?

Java Associate Medium

Java Associate — Medium

What is a `NullPointerException` in Java and when does it occur?

Key points

  • `NullPointerException` occurs when performing operations on null object references
  • It happens when trying to access methods or fields on a null object
  • This error is common when not properly checking for null values in code

Ready to go further?

Start full exam Practice more questions

Related questions