Class cannot be resolved to Type | Java Community | Help. Code. Learn. | Page 1

novel pilotBOT Jan 27, 2023, 10:57 PM

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hollow arch Jan 27, 2023, 10:57 PM

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This is my class for item type

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yet in my driver code i get ItemType cannot be resolved as type

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I'm not sure what im doing I haven/t been able to compile this program for hours

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Been told to try eclipse but that just doesnt work

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i get this error now

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        at LinkedListDriver.main(4ysy.java:11)```

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I think it has something to do with my import packages but im not sure

hollow arch Jan 27, 2023, 11:29 PM

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I can send entire code if necessary , really need help with this

obsidian comet Jan 27, 2023, 11:37 PM

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filename is 4ysy.java?

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so class name also is 4ysy ?

hollow arch Jan 27, 2023, 11:38 PM

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No i have no idea where thats coming from

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I tried eclipse by the way

obsidian comet Jan 27, 2023, 11:38 PM

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class name can't starts from number

hollow arch Jan 27, 2023, 11:38 PM

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yeah i dont have any

obsidian comet Jan 27, 2023, 11:39 PM

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at which line the error occurs ?

hollow arch Jan 27, 2023, 11:40 PM

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Says 11 which should be the public static void main args line

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but that makes no sense

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Do you think i can send all the code? and can you try running it?

obsidian comet Jan 27, 2023, 11:40 PM

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sure

hollow arch Jan 27, 2023, 11:41 PM

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this is ItemType.java

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LinkedListDriver.java

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NodeType.java

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SortedLinkedList.java

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And they are all in a folder

obsidian comet Jan 27, 2023, 11:44 PM

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at the moment 2 errors

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import package1.package2.ItemType;

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are you sure that you do right import?

hollow arch Jan 27, 2023, 11:44 PM

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yeah so i read on stack overflow

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that this error occurs due to bad importation and they said to do this

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but you can delete that line im not sure what to do tbh

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whats the other error?

obsidian comet Jan 27, 2023, 11:46 PM

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don't follow instructions if you don't understand it. Since I placed all this files in one package, I don't need that line, so I deleted and that error is solved

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second problem is in LinkedListDriver.java, line 20, ItemType type = new ItemType();

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you need to pass a argument in the constructor

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so like ItemType type = new ItemType(5); for example

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because ItemType doesn't have default constructor

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(without params)

hollow arch Jan 27, 2023, 11:47 PM

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ok yeah delete that line also

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i read that on stack overflow too

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cause i was getting ItemType type not resolved error

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is it compiling now?

obsidian comet Jan 27, 2023, 11:48 PM

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yeah

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but not working, the reason as I mentioned in that another topic

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nullpointerexception

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but it compiles

hollow arch Jan 27, 2023, 11:49 PM

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wait so how do i fix that null pointer exception

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and whne you say it compiles does the program say Enter the command?

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like does it work?

obsidian comet Jan 27, 2023, 11:50 PM

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hollow arch wait so how do i fix that null pointer exception

as I described, you have to get rid of head = new NodeType(null); in constructor

hollow arch Jan 27, 2023, 11:51 PM

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yeah

obsidian comet Jan 27, 2023, 11:51 PM

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hollow arch and whne you say it compiles does the program say Enter the command?

it crashed earlier, before that line of code where it prompts that

hollow arch Jan 27, 2023, 11:51 PM

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hmm ok so thats clue

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a*

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how would i use a debugger to fix this problem?

obsidian comet Jan 27, 2023, 11:52 PM

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and now it works

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as I deleted that line

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everything is just fine

hollow arch Jan 27, 2023, 11:52 PM

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bro im pretty sure the problem is saving

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like its not updating my saved file

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and it keeps giving me the same error no matter what i do

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maven update or something

obsidian comet Jan 27, 2023, 11:53 PM

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use eclipse. Start new project.

hollow arch Jan 27, 2023, 11:53 PM

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I did but theres a problem

obsidian comet Jan 27, 2023, 11:53 PM

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what problem?

hollow arch Jan 27, 2023, 11:53 PM

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can i dm you?

obsidian comet Jan 27, 2023, 11:53 PM

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you can, but I can talk 3 more minutes

hollow arch Jan 27, 2023, 11:54 PM

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ok

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if anyone else can help me please do

oak ingot Jan 28, 2023, 12:17 AM

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hollow arch like its not updating my saved file

are you actually writing to the file ?

hollow arch Jan 28, 2023, 12:20 AM

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yes

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nvm ive kinda got it working on my machine

oak ingot Jan 28, 2023, 12:20 AM

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hollow arch yes

which line ?

hollow arch Jan 28, 2023, 12:22 AM

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idk tbh

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im lost

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it works on my machine now though

oak ingot Jan 28, 2023, 12:22 AM

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like I see a scanner but not a writer of any kind

hollow arch Jan 28, 2023, 12:23 AM

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im just printing the vlaues out

oak ingot Jan 28, 2023, 12:23 AM

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but you want to save them to a file correct ?

hollow arch Jan 28, 2023, 12:23 AM

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no

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i was talking about my changes to the file itself

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ive got it working now though

oak ingot Jan 28, 2023, 12:24 AM

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oh ok

hollow arch Jan 28, 2023, 12:24 AM

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tysm

#Class cannot be resolved to Type