Sonar Cube “null pointer exception could be thrown” : False positive?

I have a bug raised by sonar cube on following code : private request = null; try { request = createRequest(); // create Request log.info(” Request created with details “+request.toString());…

Casting Issue for Generic Array of Node Objects

I am having problem with java generic array creation where I needed to make an array of type Node. So, I did this for declaration: private Node [] nodes; and later for initialization, nodes = …

Null pointer Exception on Recycler View On item click listener Activity Close when item got clicked

Hello I am new in Android development I have tried different way to show data in RecyclerView from firebase. At first I set on click listener on item of RecyclerView and it work’s fine but After that …

Null pointer exception when using Mockito to mock interface

I’m using Mockito to test the following method: protected void produceProducedFieldValue(Target target) throws ValueProducerCreationException { String mappedValue = (String) valueProducerFactory….

How to avoid java.lang.NullPointerException in my Code?

I have asked a question about my code for a Game of Life Implementation. The suggested solution solved my problem but created a new one. Now if I try to call the getCell() method I get a java.lang….

NullPointerException while selecting image from the storage for the Second time onwards, No NullPointerException while selecting First time

I have set up a button that is meant to check for READ_EXTERNAL_STORAGE permissions, and then open the users phone storage display images. I’ve done this successfully via the following code: All of …

Script for IBM Rhapsody made with Java and Spring autowiring not working

I developed a script for IBM Rhapsody using it’s API for java. The script is working fine when is run from my IDE. When I run the script from Rhapsody using the JAR and HEP file I get …

why the getter method goes null when i call in another class?

but in the set method on another class when i got the value is exist,, so i have 3 classes the first class is getter setter class , second is the class to fill the set and the last is class to get the …

Hive NVL does not work with Date type of the column – NullpointerException

I am using MapR Hive distribution over HDFS and facing below issue. If for a table the column type is ‘Date’ type, then the NVL function does not work. The same is working for other datatype. It …

How to avoid NullPointerException from arithmetic operators in Java?

Given the following: Integer var1 = null; Integer var2 = 4; Integer result = var1 + var2; // throws NullPointerException The requirement for my use case is that result should be null whenever either …