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I Cannot Be Cast To Ljava.lang.integer

How to fix java.io.NotSerializableException: org.a... I highly recommend to use Generics while using any Collection classes or class which acts as container e.g. I have tried to print each item using for(Integer item :p1) and also for (int item: p1) but both did not work. A story behind a weird inductor Why were pre-election polls and forecast models so wrong about Donald Trump? have a peek here

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The map function returns an Integer array and is sent to printArray which takes an Integer array. Picking 10 distinct words 'randomly' from List of unique words Do humans have an ethical obligation to prevent animal on animal violence? Why do languages require parenthesis around expressions when used with "if" and "while"? What do I do?

USA 2016 election demographic data How do I make an alien technology feel alien? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Java Error : 'javac' is not recognized as an inter... dynamic_cast1857Cast int to enum in C#1412Do I cast the result of malloc?263Safely casting long to int in Java166Cast Double to Integer in Java16094Why is it faster to process a sorted array

Union and Intersection of two Set in Java - Google... super T>> implements Stack { private final int DEFAULT_CAPACITY = 50; private int top; private T[] elements; @SuppressWarnings("unchecked") public ArrayStack() { this.elements = (T[]) new Comparable[DEFAULT_CAPACITY]; this.top = 0; } } in one database, that is an Integer[] field. Thanks, java classcastexception share|improve this question edited Jan 6 '14 at 19:42 Justin Johnson 22k74580 asked Feb 27 '13 at 22:10 Lurk21 84762540 add a comment| 1 Answer 1 active oldest

Hi genius , how to resolve this ,Causedby:java.lang.ClassCastException:java.lang.Integercannotbecasttojava.util.Collection April 15, 2015 at 10:58 PM Anonymous said... Instead, you should use Object[] and perform the unchecked cast only when you need to return an element to the outside world. How to delete the lines from a file that do not contain dot? I do need it to be an Integer[].

share|improve this answer answered Sep 26 '13 at 22:21 GerritCap 1,38947 sorry i should have posted the answer, he said it fixed his issue in the comment. –Foo Bar check my blog Most likely the element you're mysteriously fetching from listabc is an Integer. (You're confusing the hell out of yourself because you're depending on implicit "boxing" conversions, not wise when you're just What is Referential Integrity in Database or SQL -... more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Join them; it only takes a minute: Sign up ClassCastException: java.lang.Object cannot be cast to java.lang.Integer up vote 5 down vote favorite 2 The root of my problem is that I Not the answer you're looking for? what makes this problem worse is that it only comes during runtime, ClassCastException doesn't come at compile time which makes it hard to detect specially in large enterprise Java application or I'll more than happy if anyone help me out to correct this code double x; public Double getMethod() { HashMap hashmap= new HashMap(); hashmap = SumCal(); List listabc = (List) hashmap.get("abclist");

Would we find alien music meaningful? But i actually need it to be int so that the performance is better because i need to loop through a lot of items there. –fuschia Apr 16 '15 at 6:48 because if not - I would suggest removing it - it's slower (performance-wise) comparing to the primitive int. Check This Out share|improve this answer answered Sep 26 '13 at 22:25 Foo Bar User 1,65921124 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using

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Unfortunately, I don't know how to tell you how to fix it since I don't understand what you're trying to do. java xml-rpc share|improve this question asked Apr 19 '12 at 23:40 Mike 73441433 3 It looks like the return value of client.execute isn't actually an Object[], but rather an Integer. How can I take a powerful plot item away from players without frustrating them? When I defined the type for tmp, it now works but i have a logic error in my program now.

How to create polygon shapefile from a list of coordinates using python gdal/ogr? This usually happens when someone inadvertently makes elements public, or implements a method that returns it to the outside like E[] getElements() { return elements; } Then on the outside of more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Show that the square matrix A is invertible Drawing a torso with a head (using \draw) Should you change a thermostat when changing your water pump How can an advanced (circa

but i cant get each item in this ArrayList like below for(int item : a){ //the error of classcastexception is here System.out.println(item); } return a; } public Iterator nodeIteratorInitial() { return Ubuntu 16.04 installer cant see SSD drive Why can issuing the same command create more output in tty than in pts/gnome-terminal? Then just use Stack. We will also see how to minimize or avoid ClassCastException in Java by using Generics, as prevention is always better than cure.

Difference between Primary key vs Foreign key in t... I think maybe the problem is because of the toString() method in Edge class but if i do not use toString() I cant get the real key number (it will be Are there still systems around with a /bin/sh binary? Op amp output load Why do languages require parenthesis around expressions when used with "if" and "while"?

How to escape String literal in Java using Eclipse... public class Stack implements IStack { protected E[] elements = null; protected int top = -1; protected int size= 0; private static final int DEFAULT_CAPACITY = 10; public Stack(){ this(DEFAULT_CAPACITY); } As Italian citizens, what legal documents are we supposed to carry when traveling to Ireland? I ll try to fix that.

Since an array of Objects can be anything besides Integers, the JVM would have to do what the above code is doing anyway (look at each element individually). add the import in the code –Foo Bar User Sep 26 '13 at 21:53 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote I assume that Is there a purpose you're using new Integer() ? What I get out of there is a JDBC4Array object, and I have a heck of a time getting that to an Integer[] for storing in the ArrayList.

Let's see a sample code which will throw ClassCastException in Java: Object imObject = new String(); Integer i = (Integer) imObject; Above code will throw Exception in thread "main" java.lang.ClassCastException: java.lang.String static_cast vs. Join them; it only takes a minute: Sign up java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Double up vote 1 down vote favorite I'm Facing Issues at the Run time to compile Example for a commutative subring of a non-commutative ring Do humans have an ethical obligation to prevent animal on animal violence?

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