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Can't find null value for: Exception in thread "main" java.lang.NullPointerException (solved, caused by Boolea


Can't find null value for: Exception in thread "main" java.lang.NullPointerException (solved, caused by Boolea

By : tatouh achref
Date : November 20 2020, 03:01 PM
fixed the issue. Will look into that further Boolean is a class, and as opposed to the primitive type boolean, when used as a field, its default value is null and not false.
That's why isMale will throw a NPE on the line String sex = (isMale) ? "Male" : "Female";
code :


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"Exception in thread "main" java.lang.NullPointerException" error when running web scraper program

"Exception in thread "main" java.lang.NullPointerException" error when running web scraper program


By : İmzaoğlu İnşaat
Date : March 29 2020, 07:55 AM
like below fixes the issue I'm fairly new to web scraping and have limited knowledge on Java. , In the following code:
code :
 String contentText = doc.select("#mw-content-text > p").first().text()
Java, Exception in thread "main" java.lang.NullPointerException caused due to not initializing an object

Java, Exception in thread "main" java.lang.NullPointerException caused due to not initializing an object


By : Ben Crites
Date : March 29 2020, 07:55 AM
I wish this helpful for you You have declared these variables
code :
private List< PosibleTerreno> posibles_terrenos;
private List< PosibleTerreno> terrenos_validos;
private List< PosibleTerreno> posibles_terrenos = new ArrayList<PosibleTerreno>();
private List< PosibleTerreno> terrenos_validos = new ArrayList<PosibleTerreno>();
int cantidad = this.posibles_terrenos.size(); 
Exception in thread "main" java.lang.ExceptionInInitializerError Caused by: java.lang.NullPointerException

Exception in thread "main" java.lang.ExceptionInInitializerError Caused by: java.lang.NullPointerException


By : Mr.Beardface
Date : March 29 2020, 07:55 AM
this one helps. It looks like your code is in a maven project. As such,
place your properties file in src/main/resources/config.properties use getResourceAsStream("/config.properties")
code :
try (InputStream is = HttpServer.class.getResourceAsStream("/config.properties") ) {
  properties.load(is);
}
I'm getting a "Exception in thread "main" java.lang.NullPointerException" and can't find out the rea

I'm getting a "Exception in thread "main" java.lang.NullPointerException" and can't find out the rea


By : Nushara Wedasingha
Date : March 29 2020, 07:55 AM
should help you out I'm doing a school project, and I keep getting a "Exception in thread "main" java.lang.NullPointerException" type of error and I can't figure out why. I've read the code but I can't find the answer. This is the code:
code :
PrintStream array = null;
if (!new File("arraylist.txt").exists()) {
    array = new PrintStream(new File("arraylist.txt"));
}
array.append(String.valueOf(numeroV));
PrintStream array = null;
array.append(something);
Exception in thread "main" java.lang.IllegalArgumentException: input == null! - I believe eclipse cannot find

Exception in thread "main" java.lang.IllegalArgumentException: input == null! - I believe eclipse cannot find


By : Upender panjala
Date : March 29 2020, 07:55 AM
wish helps you I attempted to try on my home pc instead of my Mac and placing the "images" file which contains the "GrassTIle.png" file into the "src" file worked and I did not receive any errors. So I started a fresh on my Mac and I did not use the default package (I do not know if this would have had an effect however I am just going through the steps of what I done) I then created an "images" file within "src/com/raymond" which held the "GrassTile.png". I then used the path "/com/raymond/images/GrassTile.png" and I did not receive any errors and was able to render the image after I refreshed the package. I can't really see what the error was but it is now fixed. Thank you everyone who helped.
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