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Have a problem with packages not getting recognized [duplicate]

This question already has answers here:
The declared package does not match the expected package ""
(25 answers)
Closed 3 years ago.
I am trying to create a puzzle solving algorithm with an A* search. everything should be right but I got a problem when I try to use one of the new "MoveUp MoveDown MoveLeft MoveRight" classes that I implemented i get an error that (the declared package "rushhour" does not match the expected package)
MoveDown
package rushhour;
import search.Action;
import search.State;
public class MoveDown implements Action{
int carNum;
int nPositions;
public MoveDown(int carNum, int nPositions){
this.carNum = carNum;
this.nPositions = nPositions;
}
public int getCost() {
return 1;
}
public String toString(){
return "move down";
}
}
then the class I use it in looks like this
package rushhour;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.lang.model.element.Element;
import search.Action;
import search.State;
public class GameState implements search.State {
boolean[][] occupiedPositions;
List<Car> cars; // target car is always the first one
int nrRows;
int nrCols;
...
...
...
public boolean isLegal(Action action) {
if(action instanceof MoveDown){
Car car = cars.get(((MoveDown) action).carNum);
int nextPos = car.getRow() + car.getLength() + ((MoveDown) action).nPositions;

Is is expected that your folder hierarchy matches your package hierarchy, (and vice-versa).
If you classpath is /src/main/java/ your files should look like this:
/src/main/java/rushour/GameState.java
/src/main/java/rushour/MoveDown.java
/src/main/java/search/Action.java
/src/main/java/search/State.java

Error in Mob Spawning In Bukkit

Alright, So I had this problem on a project I've started in bukkit recently. As you will see I defined the head and everything, I set the owner of the head and applied it. But when I load in-game it shows normal Steve head! What i want it to do is when i execute the command "spawnmnz" It will spawn a minion with the sender/player's (In this case) head!
package me.frostgamersa;
import net.minecraft.server.v1_8_R3.ItemSkull;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.SkullType;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.entity.Zombie;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SkullMeta;
import org.bukkit.plugin.java.JavaPlugin;
public class NewMinion extends JavaPlugin {
String minion_name = "§3Minion §bSpawn §fEgg §8- §a[Spawned]";
#Override
public void onEnable() {
}
#Override
public void onDisable() {
}
#SuppressWarnings("deprecation")
#Override
public boolean onCommand(CommandSender sender, Command cmd, String label,
String[] args) {
Player player = (Player) sender;
if (cmd.getName().equalsIgnoreCase("spawnmnz")){
World world = player.getWorld();
Location loc = player.getLocation();
ItemStack p_skull = new ItemStack(Material.SKULL_ITEM, 1, (short)
SkullType.PLAYER.ordinal());
SkullMeta sm = (SkullMeta) p_skull.getItemMeta();
sm.setOwner(player.getName());
p_skull.setItemMeta(sm);
Zombie minion = (Zombie) world.spawn(loc, Zombie.class);
minion.setBaby(true);
minion.setCustomName(minion_name);
minion.setCustomNameVisible(true);
minion.getEquipment().setHelmet(p_skull);
return true;
}
return false;
}
}

Get the skinvalue from the players profile and then set it on the skull item usin reflection, if it is not clear to you how to do this i will provide you a api for that ;)

Does the server have an internet connection? It has to download the skin from the Mojang servers. Because of that, it might also just take a moment for the skin to appear on the head.
The import for the ItemSkull also seems weird, what server version do you use?

LibGDX Box2DLights throws error on render

I am trying to get a Box2D PointLight to render on the screen, but upon rendering, it throws an exception. I have revised the API and the Box2D User Manual, as well as watched videos on the topic, but have yet to find a solution to my problem. Here is my code and the error.
package com.mygdx.test;
import box2dLight.PointLight;
import box2dLight.RayHandler;
import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.World;
public class Test extends ApplicationAdapter {
/** the camera **/
OrthographicCamera camera;
RayHandler rayHandler;
World world;
#Override
public void create() {
camera = new OrthographicCamera(48, 32);
camera.update();
world = new World(new Vector2(0, -10), true);
rayHandler = new RayHandler(world);
new PointLight(rayHandler, 32);
}
#Override
public void render() {
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
world.step(Gdx.graphics.getDeltaTime(), 8, 3);
rayHandler.setCombinedMatrix(camera.combined);
rayHandler.updateAndRender();
}
And the error:
Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: java.lang.NoSuchMethodError: com.badlogic.gdx.graphics.glutils.FrameBuffer.getColorBufferTexture()Lcom/badlogic/gdx/graphics/Texture;
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:127)
Caused by: java.lang.NoSuchMethodError: com.badlogic.gdx.graphics.glutils.FrameBuffer.getColorBufferTexture()Lcom/badlogic/gdx/graphics/Texture;
at box2dLight.LightMap.gaussianBlur(LightMap.java:76)
at box2dLight.LightMap.render(LightMap.java:37)
at box2dLight.RayHandler.render(RayHandler.java:328)
at box2dLight.RayHandler.updateAndRender(RayHandler.java:262)
at com.mygdx.test.Test.render(Test.java:33)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:215)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:120)

I had the same issue with a newly generated libgdx project, however updating the box2dlights version from 1.3 to 1.4 solved this error for me.

Have you tried using this method?
new PointLight(rayHandler, RAYS_NUM, new Color(1,1,1,1), lightDistance, x, y);
I have also noticed, you should do
world.step();
at the end of the render() method. Probably wont fix the problem, but i just noticed

passing argument to WordCram code

I have the following question: I am trying to execute the usConstitution wordcram example (code follows) and if provided as is the code executes in eclipse, the applet starts and the word cloud is created. (code follows)
import processing.core.*;
//import processing.xml.*;
import wordcram.*;
import wordcram.text.*;
import java.applet.*;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.event.MouseEvent;
import java.awt.event.KeyEvent;
import java.awt.event.FocusEvent;
import java.awt.Image;
import java.io.*;
import java.net.*;
import java.text.*;
import java.util.*;
import java.util.zip.*;
import java.util.regex.*;
public class usConstitution extends PApplet {
/*
US Constitution text from http://www.usconstitution.net/const.txt
Liberation Serif font from RedHat: https://www.redhat.com/promo/fonts/
*/
WordCram wordCram;
public void setup() {
size(800, 600);
background(255);
colorMode(HSB);
initWordCram();
}
public void initWordCram() {
wordCram = new WordCram(this)
.fromTextFile("http://www.usconstitution.net/const.txt")
.withFont(createFont("https://www.redhat.com/promo/fonts/", 1))
.sizedByWeight(10, 90)
.withColors(color(0, 250, 200), color(30), color(170, 230, 200));
}
public void draw() {
if (wordCram.hasMore()) {
wordCram.drawNext();
}
}
public void mouseClicked() {
background(255);
initWordCram();
}
static public void main(String args[]) {
PApplet.main(new String[] { "--bgcolor=#ECE9D8", "usConstitution" });
}
}
My problem is the following:
I want to pass through main (which is the only static class) an argument so as to call the usConstitution.class from another class providing whichever valid filename I want in order to produce its word cloud. So how do I do that? I tried calling usConstitution.main providing some args but when I try to simply print the string I just passed to main (just to check if it is passed) I get nothing on the screen. So the question is How can I pass an argument to this code to customize .fromTextFile inside initWordCram ?
Thank you a lot!

from: https://wordcram.wordpress.com/2010/09/09/get-acquainted-with-wordcram/ :
Daniel Bernier says:
June 11, 2013 at 1:13 am
You can’t pass command-line args directly to WordCram, because it has no executable.
But you can make an executable wrapper (base it on the IDE examples that come with WordCram), and it can read command-line args & pass them to WordCram as needed.
FYI, it’ll still pop up an Applet somewhere – AFAIK, you can’t really run Processing “headless.” But that’s usually only a concern if you’re trying to run on a server.

Passing an Enum to a method as a parameter in Java?

I am trying to call a docx4j method "setAlgn" in the interface CTTextParagraphProperties, which, per the docx4j jar I am using and the compiler takes an Enum type as a parameter. I am passing the actual argument STTextAlignType.CTR which I believe should resolve to the value 'ctr' (citation: http://grepcode.com/file/repo1.maven.org/maven2/org.docx4j/docx4j/3.0.1/org/docx4j/dml/STTextAlignType.java?av=f, I am running this same code).
Here is my code:
import java.lang.Enum;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFChildAnchor;
import org.apache.poi.xssf.usermodel.XSSFDataFormat;
import org.apache.poi.xssf.usermodel.XSSFDrawing;
import org.apache.poi.xssf.usermodel.XSSFFont;
import org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator;
import org.apache.poi.xssf.usermodel.XSSFPrintSetup;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFSimpleShape;
import org.apache.poi.xssf.usermodel.XSSFShapeGroup;
import org.apache.poi.xssf.usermodel.XSSFTextBox;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.docx4j.dml.*;
public static XSSFTextBox createTextBox(XSSFSheet sh, String message, int row1, int col1, int row2, int col2, boolean is_bold, boolean is_italics, boolean is_underline, boolean centered, int fontSize){
//Various apache-poi stuff
XSSFWorkbook wb = sh.getWorkbook();
XSSFDrawing drawing = sh.createDrawingPatriarch();
XSSFClientAnchor clientanchor = new XSSFClientAnchor(0,0,0,0,(short)col1,row1,(short)col2,row2);
XSSFChildAnchor childanchor = new XSSFChildAnchor(0,0,0,0);
XSSFShapeGroup group = drawing.createGroup(clientanchor);
XSSFTextBox textbox = group.createTextbox(childanchor);
XSSFRichTextString richMessage = new XSSFRichTextString(message);
XSSFFont textFont = wb.createFont();
textFont.setFontHeightInPoints((short)fontSize);
textFont.setFontName("Verdana");
if(is_bold){
textFont.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
}
textFont.setItalic(is_italics);
if(is_underline){
textFont.setUnderline(XSSFFont.U_SINGLE);
}
if(centered){
//Here is the code in question.
textbox.getCTShape().getTxBody().getPArray(0).getPPr().setAlgn(STTextAlignType.CTR);
}
richMessage.applyFont(textFont);
textbox.setText(richMessage);
return textbox;
}
My compiler returns the following error message:
com\tem\POIStuff.java:1105: error: method setAlgn in interface CTTextParagraphProperties cannot be applied to given types;
textbox.getCTShape().getTxBody().getPArray(0).getPPr().setAlgn(STTextAlignType.CTR);
Ultimately, my question is how can I get the "setAlgn" method to accept 'STTextAlignType.CTR' as an Enum and not as object type 'STTextAlignType'? Thank you in advance very much for your help!

The problem is actually on the first line of your code snippet! Your issue is with
import java.lang.Enum;
CTTextParagraphProperties.setAlgn does take a class of type Enum, but it's not that kind of Enum. It has to be a org.openxmlformats.schemas.drawingml.x2006.main.STTextAlignType.Enum
I'd suggest you switch your imports to be:
import org.openxmlformats.schemas.drawingml.x2006.main.STTextAlignType;
import org.openxmlformats.schemas.drawingml.x2006.main.STTextAlignType.Enum;
You can then set the alignment with things like STTextAlignType.L and it'll work fine