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Tag: tostring

Long won’t convert to a string in java [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 12 months ago. Improve this question I am trying to convert a long to an integer but nothing seems to work, the code snippet that wont work is ((int)jo.get(“gold”)) The full

Android: java.lang.NullPointerException: Attempt to invoke virtual method ‘java.lang.String java.lang.Object.toString()’ on a null object reference

Facing a problem with a practice app I’m working on. I’m facing a NullPointerException problem relating to the toString method. Being new to android app development, I’m unsure of the exact cause even after my research into this. Hence I ask for someone who is more familiar with the stack trace to kindly help me out. Note: The error occurs

toString() representation output

I have a bug in the code and believe me I’ve run debugging many times to find what’s wrong with code but cannot understand what is wrong. I have to output the contents of 2d Arraylist. For example, if I do: it outputs me the following: But when I change the fourth value, 3, to higher number, for example, 4