EasyMock chained method call producing null pointer exception

EasyMock chained method call producing null pointer exception

By : Z.Wang
Date : November 24 2020, 05:44 AM
With these it helps I am using EasyMock to try and mock iteration through a list of items that are two levels deep. My unit test code is below , You probably need to add the EasyMock.replay();
code :

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Null pointer exception with a method call

Null pointer exception with a method call

By : M.sadiq
Date : March 29 2020, 07:55 AM
it helps some times Either this e is null or the value returned from the statement e.getKey() is null.
You have to make sure that the list doesn't contain a null element and then their keys should also be not-null.
code :
if(e!=null && e.getKey()!=null && e.getKey() == key){
     //statements here.
Call to a CountDownTimer method pushes a Null pointer exception

Call to a CountDownTimer method pushes a Null pointer exception

By : Констянтин Васін
Date : March 29 2020, 07:55 AM
I wish this helpful for you I am working on a count down timer which seems to be spitting out a null pointer exception when the method gets called. Please see below for the logcat output:
code :
MultiCountDownTimer countDownTimer;
MultiCountDownTimer countDownTimer = new MultiCountDownTimer();
Properties file seems to be producing a null pointer exception?

Properties file seems to be producing a null pointer exception?

By : Monther
Date : March 29 2020, 07:55 AM
With these it helps It looks like the properties file could not be found. You can trace it by printing the exception (instead of ex.getMessage() --> throw the exception or write it to log/console).
Pay attention to the location of the properties file. The recommended location for resources files is: src/main/resources
code :
    package main;

    import java.io.File;
    import java.io.FileInputStream;
    import java.util.Properties;

    public class PopertiesFileSeemsToBeProducingANullPointerException {

        private static String testEnvironment;
        private static final String CONFIG_PROPERTIES_DIRECTORY = "src/main/resources/envs.properties";

        //GLOBAL URL's
        public static String HOMEPAGE_URL = "https://" + testEnvironment + ".deltaway.co.uk/";

        static {
                Properties props = new Properties();
                File file = new File(PopertiesFileSeemsToBeProducingANullPointerException.CONFIG_PROPERTIES_DIRECTORY);
                FileInputStream fileInput = new FileInputStream(file);

                // process properties content
                testEnvironment = props.getProperty("testEnvironment");
            } catch (Exception ex) {

        public static void main(String[] args) {


public interface IConfig {
    public void init();
    import java.io.IOException;
    import java.io.InputStream;
    import java.util.Properties;

    import lombok.Data;

    public class Config implements IConfig{
        private final  String PROPERTIES_FILE = "envs.properties";
        private final  String ENVIRONMENT = "testEnvironment";  
        private String env;

        public void init(){
            try(InputStream is = this.getClass().getClassLoader().getResourceAsStream(PROPERTIES_FILE)){
                Properties props = new Properties();
                env = props.getProperty(ENVIRONMENT);
            } catch (IOException e) {
                throw new RuntimeException("Failed to read properties file due to IO issues");
    IConfig config;

    private void loadConfig() {
Null-pointer exception when i call a method

Null-pointer exception when i call a method

By : Marko
Date : March 29 2020, 07:55 AM
wish of those help i'm getting a null pointer exception when i call my two methods. And i have no idea, why i get it. when i check the code it seems right , Don't use
.iterator() Producing Null Pointer Exception Even When Checked For Null

.iterator() Producing Null Pointer Exception Even When Checked For Null

By : sandhya vavilapalli
Date : March 29 2020, 07:55 AM
will be helpful for those in need I am doing some threading. In the postExecute I need to perform an iterator task. I check if the iterator() is null, but it's still producing this error:
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