Question

Why is my Java program crashing on this line?

I keep getting a NullPointerException

myObject.sayHello()

I checked if myObject is null but it's not

Comments on question:
  • JavaMaster: Can you provide more context to your code? How is myObject being initialized?
  • CodeSleuth: Are you sure myObject isn't null? Try printing its value right before calling sayHello().
  • DebugDiva: It's possible that the NullPointerException is occurring within the sayHello() method. Can you share that code too?
  • QuestionAsker: @JavaMaster Here's how I'm initializing myObject: MyClass myObject; and later myObject = new MyClass();

Answer 1:

[ 5 upvotes ]
It seems like you might not be initializing myObject properly before calling the sayHello() method. Make sure you initialize it using the new keyword before calling any methods on it.

Example:

MyClass myObject = new MyClass();
myObject.sayHello();
Comments on Answer:
  • QuestionAsker: Thanks! I actually found that I was missing the new keyword in one of the branches of my code. Problem solved!

Answer 2:

[ 2 upvotes ]
It's possible that the NullPointerException is occurring inside the sayHello() method. Please share the code of the sayHello() method, so we can help you pinpoint the issue.

Comments on Answer:
  • QuestionAsker: I checked the sayHello() method, but there's no issue there. It was actually a problem with my initialization, like the other answer mentioned. Thanks for the suggestion, though!
Edit
Pub: 08 May 2023 04:36 UTC
Views: 102