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How do I change the value of a java Path object?

Below, I am trying to change the value of the Path object there using the setSoundPath() method. I cannot find any documentation to say this is possible.
I am trying to create a class that will create a copy of a file at a specified path and put the copy in the specified folder. I need to be able to change the name of the path though, because I want to create the sound object with an initial placeholder file path.
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
import java.io.IOException;
import javafx.beans.property.StringProperty;
import javafx.beans.property.SimpleStringProperty;
class Scratch {
public static class Sound extends Object{
private Path there;
StringProperty tests = new SimpleStringProperty(this, "test", "");
public Sound(){
this.there = Paths.get("C:\\Users\\HNS1Lab.NETWORK\\Videos\\JuiceWRLD.mp3");
}
public void setSoundPath(String SoundPath) {
this.tests.setValue(SoundPath);
this.there = Paths.get(this.tests.toString());
}
}
public static void main(String[] args) {
Sound test = new Sound();
test.setSoundPath("C:\\Users\\HNS1Lab.NETWORK\\Music\\Meowing-cat-sound.mp3");
test.copySound();
System.out.println("Path: " + test.getSoundPath().toString());
}
}

They are immutable:
Implementations of this interface are immutable and safe for use by
multiple concurrent threads.
(from: https://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html)
You can create new Path objects that point to your path.

IllegalArgumentException when using GSON's fromJson()

I have this exception when trying to parse a JSON file with GSON:
Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: class com.sun.javafx.jmx.HighlightRegion declares multiple JSON fields named hash
I have tested a little to what causes this, and I found that it only occurs when I create a Object that has an Event object as a member. In this case, I am trying to create a List of Quest objects that eventually have Event objects.
package Quests;
import Events.EventSequence;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class Quest {
public static void parseQuest() {
Gson gson = new Gson();
FileReader questGSON;
try {
questGSON = new FileReader(QUEST_FILE);
} catch (FileNotFoundException e) {
e.printStackTrace();
return;
}
JsonObject questJSON = gson.fromJson(questGSON, JsonObject.class);
questList = new ArrayList<>();
for(Map.Entry<String, JsonElement> element : questJSON.entrySet()) {
questList.add(gson.fromJson(element.getValue(), Quest.class));
}
}
}
I am using javafx in that class in the following way:
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Button;
public abstract class Event implements EventHandler<ActionEvent> {
// members of this class
private String title, text;
private Button[] buttonSet;
protected Entity other;
protected Event nextEvent;
public abstract Event chooseNewEvent(String command);
#Override
public void handle(ActionEvent event) {
// Get the name of the button
String command = ((Button) event.getSource()).getText();
displayNewEvent(chooseNewEvent(command));
}
}
The only information I could find regarding this was:
https://github.com/wpilibsuite/shuffleboard/issues/358
Could someone point me in some direction to fix my bug?

I found out that it was a Button array from javafx.scene.control.Button in my Event class that was causing the problem. I fixed it by making it transient so it would get ignored by GSON and not cause any problems.
Nevertheless, I have no idea why the Button array would cause this exception. Any thoughts?

Why am I getting this Jave Error for the R string in the gui for the minecraft plugin

I am coding a Minecraft Plugin using of course Java for Minecraft 1.12
I have the latest version of Java and eclipse also the Bukkit Api.
This is the error I am getting:
String[] r *=* ("Spamming", "test1", "test2,", "test3", "Test34");
for (String reason : r)
The = is under red line with this error:
Syntax error on token "=", Name expected after this tokenReasonGUI.java /WarningSystem/src/listener line 28 Java Problem
full code:
package listeners;
import java.util.Arrays;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.SkullType;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
import me.OctoberTroy.WarningSystem.MainClass1;
public class ReasonGUI implements Listener{
MainClass1 main = MainClass1.getPlugin(MainClass1.class);
public Inventory rinv = Bukkit.createInventory(null, 9, "Select a reason to warn the player!");
public ReasonGUI(Player player){
if (player == null){
return;
}
String[] r = ("Spamming", "test1", "test2,", "test3", "Test34");
for (String reason : r);

Java uses braces to initialize an array.
String[] r = {"Spamming", "test1", "test2,", "test3", "Test34"};
Furthermore, although your program will compile, your for loop has no implementation. You cycle through each string in your newly declared array, but do nothing with it. Put the implementation for it as such:
for (String reason : r){
// IMPLEMENTATION GOES HERE
}

In Java you use curly braces {} for arrays, not parenthesis ().

Why is getItemInHand being crossed out (see image below)

I am new to creating minecraft plugins, however not new to programming, I am following a tutorial very thoroughly, the video has good ratings so it is trusted, when watching the video the guy has no problems what so ever (Youtube video on developing minecraft plugins) , so I did some research into solutions but always the line through the code.
Eclipse gives me the option for: #SuppressWarnings("deprecation") which allows the code to be used still but I would rather have no need of that usage.
Basically my question is why is there the need of the line going through the code and how do I find a solution to get rid of it.
Main class:
package com.jc1;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.permissions.Permission;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
public class Core extends JavaPlugin
{
public Permission pPermission = new Permission("playerAbilities.allowed");
#Override
public void onEnable()
{
new BlockListener(this);
PluginManager pm = getServer().getPluginManager();
pm.addPermission(pPermission);
}
#Override
public void onDisable()
{
}
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args)
{
if(cmd.getName().equalsIgnoreCase("giveitems") && sender instanceof Player)
{
Player p = (Player) sender;
if(p.hasPermission("playerAbilities.allowed"))
{
p.setItemInHand(new ItemStack(Material.DIAMOND_BOOTS));
}
return true;
}
return false;
}
}
Secondary class:
package com.jc1;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockPlaceEvent;
public class BlockListener implements Listener
{
public BlockListener(Core plugin)
{
plugin.getServer().getPluginManager().registerEvents(this, plugin);
}
#EventHandler
public void onBlockPlace(BlockPlaceEvent e)
{
Player p = e.getPlayer();
if(!p.hasPermission("playerAbilities.allowed"))
{
e.setCancelled(true);
}
}
}

The method is deprecated, meaning that it is not recommended to be used anymore and is most likely replaced with another method.
Methods that are deprecated may still work as intended.
A simple search for the method reveals (this) documentation, stating:
players can duel wield now use the methods for the specific hand instead
which referes to the #see references:
getItemInMainHand() and getItemInOffHand().

Use this:
player.getInventory().getItemInMainHand()
Instead of:
player.getItemInHand()
Hope this helps! :D

Unable to import a Scala object into the Java project

I created a Scala object:
package myapp.data
import java.io.File
import myapp.models.NodeViewModel
import com.thoughtworks.xstream.XStream
import com.thoughtworks.xstream.io.xml.DomDriver
object ForumSerializer {
def openFile(file : File) : NodeViewModel = {
// doing something
}
def saveToFile(model : NodeViewModel) : Unit = {
// doing something
}
}
Then I tried to import it in another Java file
import myapp.ForumSerializer;
The error I get is:
Import myapp.ForumSerializer cannot be resolved.
What am I doing wrong?

Import it as ForumSerializer$.
Scala adds a $, so the compiler doesn't get confused with the class, when you have both an object and a class of the same name. You can then access the singleton object using the generated MODULE$.