MBTilesRasterDataSource not found from nutiteq SDK? - java

Recently i just followed the examples of Nutiteq SDK from here.
But unfortunately the MBTilesRasterDataSource is not found. Eclipse shows error on the variable statement on that line. I check inside the package com.nutiteq.rasterdatasources. but found no class using that name. Where does it come from anyway?

The class MBTilesRasterDataSource is part of their advancedlayers library
Looks like in the new version of this library, the class MBTilesRasterDataSource is available under com.nutiteq.datasources.raster
change your import package declaration to com.nutiteq.datasources.raster, the eclipse error should go away.

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Minecraft Forge 1.16.5 changes since 1.16.4 - compiling error

I am trying to learn Minecraft modding, and while following a tutorial for version 1.16.4, I found that their code did not work, and I presume this is a change to the API, since I am using 1.16.5.
I have looked at both official and unofficial API docs, but these did not provide me any insight. Could anyone point me to a better API reference, or better yet, to a VSCode extension that autocompletes for the most recent Forge API.
Here is the compile error when I ran ./gradlew.bat build with my minimal reproducible example (sorry about the code highlighting, I don't know how to fix it):
C:\Users\eric\Desktop\Programming\Java\Minecraft Mod 1\src\main\java\com\ericl5445\testmod1\core\init\ItemInit.java:1: error: package net.minecraftforge.item does not exist
import net.minecraftforge.item.Item;
^
C:\Users\eric\Desktop\Programming\Java\Minecraft Mod 1\src\main\java\com\ericl5445\testmod1\core\init\ItemInit.java:2: error: package net.minecraftforge.item does not exist
import net.minecraftforge.item.ItemGroup;
^
Here is my full code:
TestMod1.java
ItemInit.java
Any help would really be appreciated!
I do not have an api reference, however I have found that the ItemGroup class is not under net.minecraftforge.item. It is under the package net.minecraft.item.
Your IDE, usually Intellij Idea or Eclipse, should be able to tell you where these classes are located via a search functionality. In Eclipse, you can press Control/Command + Shift + T to bring up a search box with a list of all the classes in your workspace.
The Package You Need To import is net.minecraft.item.Item and net.minecraft.itemGroup,
Not net.minecraftforge.item.Item and net.minecraftforge.itemGroup

How to check which library contains a specific class in Eclipse

I am getting this error:
Java : The constructor JSONTokener(InputStreamReader) is undefined
I found the latest version of json and add that library but the problem didn't resolved, which I guess is because it is using another library.
Based on this post I need to find which library contains JSONTokener.How can I do that? None of the libraries' names contains json! I am using eclipse.
This is the import line of my program for this class:
import org.json.*;
To the OP: note also that as well as configuring the list of libraries, jars, folders, etc. in the build path, you may have to manually-adjust their order (using the 'Order and Export' tab).

Why cannot use weka.classifiers.functions.PLSClassifier

I am trying to use weka's PLSClassifier using java, but when I tried to import weka.classifiers.functions.PLSClassifier into eclipse, it gives me error(The error is import weka.classifiers.functions.PLSClassifier cannot be resolved). The weka I use is the latest version3.7, but I found no class PLSClass under weka.classifiers.functions.
The documentation for this class is: http://weka.sourceforge.net/doc.stable/weka/classifiers/functions/PLSClassifier.html
I would like to know do I need addition package to support this?
I found an external PLSClass package and solve the problem. It seems that in the original weka library, there is no PLSClass under weka.classifiers.functions package.

Java disutil CoordinateConversions import problems

I'm writing a Java class that will be used to send PDUs across a network- to do this, I am following the tutorial at: Tutorial
In the example, the line:
double lla[] = CoordinateConversions.xyzToLatLonDegrees(c);
appears towards the end of the class, and I see that CoordinateConversions has been imported with the line:
import edu.nps.moves.disutil.CoordinateConversions;
I have tried using the xyzToLatLonDegrees(); method in the class that I am writing- calling it in the same way as is done in the example. However, for some reason, I get a compile error that says:
CoordinateConversions cannot be resolved
on the line where I'm trying to use it, and
The import edu.nps.moves.disutil.CoordinateConversions cannot be resolved
on the line where I am importing it.
Does anyone know why this is, and how I can fix the import, so that I can use the xyzToLatLonDegrees() method?
You need to have the CoordinateConversions class on your classpath. Either by obtaining the source and dropping it into your project (possibly adjusting package names, and only if the license allows), or by finding a JAR containing that class and adding it to your build path in your IDE.
You probably need to download the Java files from here.

Android Facebook sdk Session.OpenRequest(myFragment) is undefined?

For some reason I cannot see the line of code:
session = new Session.OpenRequest(this).setCallBack(statusCallBack)
It gives me an error that Session.OpenRequest(myFragment) is undefined. Does anyone know why this is and how I can fix it?
Found out what i was doing wrong. It has to be a fragment from the support library. I was extending the regular fragment class.
Apparently, Session.OpenRequest(Fragment fragment) constructor should work. Assuming that you have added Facebook SDK properly in your project, organize the imports in your class to import the Session.OpenRequest class. This constructor seems to be invisible for your code.
If you are using Eclipse IDE organize imports by pressing Ctrl+Shift+O.

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