为什么java（minecraft）似乎在重置我的变量？

我正在制作一个minecraft mod，它是Java代码，我注意到一个奇怪的行为，字符串似乎正在丢失它的数据。我是Java新手，所以我对Java如何处理字符串或其他对象没有很强的理解。因此，我将说明我正在做什么以及问题在哪里：我有一个类，它有一些文本字段ui元素，用户在其中键入这些元素以给项目命名。然后我要做的是，每当用户更改字段中的文本时，它会将其内容的副本发送到另一个类，然后该类会将其发送到另一个类（这是由于minecraft的设置方式所必需的），然后在创建项目时，最后一个类会从其自身内部更新项目的名称。我不确定这是否是最好的方法，但这是我在短期内想到的。问题是，当创建项时，最后一个类的名称字段（字符串）将被删除，并且为空。我不知道为什么会发生这种情况，也不知道它是如何发生的，因为这些名称字段只有在ui中的文本发生变化时才被（重新）定义，并且它们各自的类都是私有的。所以，我不知所措。我将发布我的课程，希望你们能理解它们并帮助我

GuiRecorder.java

package net.minecraft.src;

import org.lwjgl.opengl.GL11;

public class GuiRecorder extends GuiContainer
{
private TileEntityRecorder recorderInventory;
private GuiTextField discName;
private GuiTextField musicPath;
private ContainerRecorder record;
private boolean isInit;


public GuiRecorder(InventoryPlayer par1InventoryPlayer, TileEntityRecorder par2TileEntityRecorder)
{
    super(new ContainerRecorder(par1InventoryPlayer, par2TileEntityRecorder));
    this.recorderInventory = par2TileEntityRecorder;
    this.record = (ContainerRecorder)(this.inventorySlots);

    int var5 = (this.width - this.xSize) / 2;
    int var6 = (this.height - this.ySize) / 2;

    this.isInit = false;
}

/**
 * Capture Any/All key presses from the user and put them in the correct text field.
 */
protected void keyTyped(char par1, int par2)
{
    if (par2 == 1)
    {
        this.mc.thePlayer.closeScreen();
    }

    else if (this.discName.isFocused())
    {
        this.discName.textboxKeyTyped(par1, par2);
    }
    else if (this.musicPath.isFocused())
    {
        this.musicPath.textboxKeyTyped(par1, par2);
    }

    System.out.println("Keyboard hit! Code: " + par2);

    this.record.setName(this.discName.getText());
    this.record.setPath(this.musicPath.getText());
}

/**
 * Capture Any/All mouse clicks on the GUI.
 */
protected void mouseClicked(int par1, int par2, int par3)
{
    super.mouseClicked(par1, par2, par3);
    this.musicPath.mouseClicked(par1, par2, par3);
    this.discName.mouseClicked(par1, par2, par3);
}

public void onGuiClosed()
{
    this.record.setName(this.discName.getText());
    this.record.setPath(this.musicPath.getText());

    if (this.mc.thePlayer != null)
    {
        this.inventorySlots.onCraftGuiClosed(this.mc.thePlayer);
    }
}

/**
 * Draw the foreground layer for the GuiContainer (everything in front of the items)
 */
protected void drawGuiContainerForegroundLayer(int par1, int par2)
{
    this.fontRenderer.drawString(StatCollector.translateToLocal("container.inventory"), 8, this.ySize - 96 + 2, 4210752);
    this.fontRenderer.drawString("Disc Name:", (int)(this.xSize*0.02), (int)(this.ySize*0.03)+1, 4210752);
    this.fontRenderer.drawString("Music Path:", (int)(this.xSize*0.02), (int)(this.ySize*0.2)-1, 4210752);
}

/**
 * Draw the background layer for the GuiContainer (everything behind the items)
 */
protected void drawGuiContainerBackgroundLayer(float par1, int par2, int par3)
{       
    int var4 = this.mc.renderEngine.getTexture("/gui/recorder.png");
    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    this.mc.renderEngine.bindTexture(var4);
    int var5 = (this.width - this.xSize) / 2;
    int var6 = (this.height - this.ySize) / 2;
    this.drawTexturedModalRect(var5, var6, 0, 0, this.xSize, this.ySize);
    int var7;

    if(!this.isInit)
    {            
        this.discName = new GuiTextField(this.fontRenderer, var5 + 7, var6 + 16, 68, 10);
        this.musicPath = new GuiTextField(this.fontRenderer, var5 + 7, var6 + 39, 68, 10);

        this.discName.setFocused(true);
        this.musicPath.setFocused(false);

        this.discName.setText("Untitled");
        this.musicPath.setText("cat");

        this.isInit = true;
    }

    var7 = this.recorderInventory.getCookProgressScaled(24);
    this.drawTexturedModalRect(var5 + 111, var6 + 34, 176, 14, var7 + 1, 16);

    this.discName.drawTextBox();
    this.musicPath.drawTextBox();
}
} 

package net.minecraft.src;

import java.util.Iterator;

public class ContainerRecorder extends Container
{
private TileEntityRecorder recorder;
private int lastCookTime = 0;
private int lastBurnTime = 0;
private int lastItemBurnTime = 0;
public volatile String name;
public volatile String path;

public ContainerRecorder(InventoryPlayer par1InventoryPlayer, TileEntityRecorder par2TileEntityRecorder)
{
    this.recorder = par2TileEntityRecorder;
    this.addSlotToContainer(new Slot(par2TileEntityRecorder, 0, 87, 35));
    this.addSlotToContainer(new SlotRecorder(par1InventoryPlayer.player, par2TileEntityRecorder, 2, 148, 36));

    int var3;

    for (var3 = 0; var3 < 3; ++var3)
    {
        for (int var4 = 0; var4 < 9; ++var4)
        {
            this.addSlotToContainer(new Slot(par1InventoryPlayer, var4 + var3 * 9 + 9, 8 + var4 * 18, 84 + var3 * 18));
        }
    }

    for (var3 = 0; var3 < 9; ++var3)
    {
        this.addSlotToContainer(new Slot(par1InventoryPlayer, var3, 8 + var3 * 18, 142));
    }

    this.name = "Untitled";
    this.path = "cat";
}

public void addCraftingToCrafters(ICrafting par1ICrafting)
{
    super.addCraftingToCrafters(par1ICrafting);
    par1ICrafting.updateCraftingInventoryInfo(this, 0, this.recorder.currentBurnTime);
    par1ICrafting.updateCraftingInventoryInfo(this, 2, this.recorder.currentItemBurnTime);
}

/**
 * Updates crafting matrix; called from onCraftMatrixChanged. Args: none
 */
public void updateCraftingResults()
{
    super.updateCraftingResults();
    Iterator var1 = this.crafters.iterator();

    while (var1.hasNext())
    {
        ICrafting var2 = (ICrafting)var1.next();

        if (this.lastCookTime != this.recorder.currentBurnTime)
        {
            var2.updateCraftingInventoryInfo(this, 0, this.recorder.currentBurnTime);
        }

        if (this.lastItemBurnTime != this.recorder.currentItemBurnTime)
        {
            var2.updateCraftingInventoryInfo(this, 2, this.recorder.currentItemBurnTime);
        }
    }

    this.lastCookTime = this.recorder.currentBurnTime;
    this.lastBurnTime = this.recorder.burnTime;
    this.lastItemBurnTime = this.recorder.currentItemBurnTime;
}

public void updateProgressBar(int par1, int par2)
{
    if (par1 == 0)
    {
        this.recorder.currentBurnTime = par2;
    }

    if (par1 == 1)
    {
        this.recorder.burnTime = par2;
    }

    if (par1 == 2)
    {
        this.recorder.currentItemBurnTime = par2;
    }
}

public boolean canInteractWith(EntityPlayer par1EntityPlayer)
{
    return this.recorder.isUseableByPlayer(par1EntityPlayer);
}

public ItemStack func_82846_b(EntityPlayer par1EntityPlayer, int par2)
{
    ItemStack var3 = null;
    Slot var4 = (Slot)this.inventorySlots.get(par2);

    if (var4 != null && var4.getHasStack())
    {
        ItemStack var5 = var4.getStack();
        var3 = var5.copy();

        if (par2 == 2)
        {
            if (!this.mergeItemStack(var5, 3, 39, true))
            {
                return null;
            }

            var4.onSlotChange(var5, var3);
        }
        else if (par2 != 1 && par2 != 0)
        {
            if (RecorderRecipes.smelting().getSmeltingResult(var5.getItem().shiftedIndex) != null)
            {
                if (!this.mergeItemStack(var5, 0, 1, false))
                {
                    return null;
                }
            }
            else if (TileEntityRecorder.isItemFuel(var5))
            {
                if (!this.mergeItemStack(var5, 1, 2, false))
                {
                    return null;
                }
            }
            else if (par2 >= 3 && par2 < 30)
            {
                if (!this.mergeItemStack(var5, 30, 39, false))
                {
                    return null;
                }
            }
            else if (par2 >= 30 && par2 < 39 && !this.mergeItemStack(var5, 3, 30, false))
            {
                return null;
            }
        }
        else if (!this.mergeItemStack(var5, 3, 39, false))
        {
            return null;
        }

        if (var5.stackSize == 0)
        {
            var4.putStack((ItemStack)null);
        }
        else
        {
            var4.onSlotChanged();
        }

        if (var5.stackSize == var3.stackSize)
        {
            return null;
        }

        var4.func_82870_a(par1EntityPlayer, var5);
    }

    return var3;
}

public void setName(final String aName)
{
    this.name = aName;
    System.out.println("<ContainerRecorder>Record Name Set! Name: " + this.name);
    this.recorder.setDiscName(this.name);
    this.recorder.setMusicPath(this.path);
}

public void setPath(final String aPath)
{
    this.path = aPath;
    System.out.println("<ContainerRecorder>Record Path Set! Path: " + this.path);
    this.recorder.setDiscName(this.name);
    this.recorder.setMusicPath(this.path);
}
}

ContainerRecorder.java

package net.minecraft.src;

import org.lwjgl.opengl.GL11;

public class GuiRecorder extends GuiContainer
{
private TileEntityRecorder recorderInventory;
private GuiTextField discName;
private GuiTextField musicPath;
private ContainerRecorder record;
private boolean isInit;


public GuiRecorder(InventoryPlayer par1InventoryPlayer, TileEntityRecorder par2TileEntityRecorder)
{
    super(new ContainerRecorder(par1InventoryPlayer, par2TileEntityRecorder));
    this.recorderInventory = par2TileEntityRecorder;
    this.record = (ContainerRecorder)(this.inventorySlots);

    int var5 = (this.width - this.xSize) / 2;
    int var6 = (this.height - this.ySize) / 2;

    this.isInit = false;
}

/**
 * Capture Any/All key presses from the user and put them in the correct text field.
 */
protected void keyTyped(char par1, int par2)
{
    if (par2 == 1)
    {
        this.mc.thePlayer.closeScreen();
    }

    else if (this.discName.isFocused())
    {
        this.discName.textboxKeyTyped(par1, par2);
    }
    else if (this.musicPath.isFocused())
    {
        this.musicPath.textboxKeyTyped(par1, par2);
    }

    System.out.println("Keyboard hit! Code: " + par2);

    this.record.setName(this.discName.getText());
    this.record.setPath(this.musicPath.getText());
}

/**
 * Capture Any/All mouse clicks on the GUI.
 */
protected void mouseClicked(int par1, int par2, int par3)
{
    super.mouseClicked(par1, par2, par3);
    this.musicPath.mouseClicked(par1, par2, par3);
    this.discName.mouseClicked(par1, par2, par3);
}

public void onGuiClosed()
{
    this.record.setName(this.discName.getText());
    this.record.setPath(this.musicPath.getText());

    if (this.mc.thePlayer != null)
    {
        this.inventorySlots.onCraftGuiClosed(this.mc.thePlayer);
    }
}

/**
 * Draw the foreground layer for the GuiContainer (everything in front of the items)
 */
protected void drawGuiContainerForegroundLayer(int par1, int par2)
{
    this.fontRenderer.drawString(StatCollector.translateToLocal("container.inventory"), 8, this.ySize - 96 + 2, 4210752);
    this.fontRenderer.drawString("Disc Name:", (int)(this.xSize*0.02), (int)(this.ySize*0.03)+1, 4210752);
    this.fontRenderer.drawString("Music Path:", (int)(this.xSize*0.02), (int)(this.ySize*0.2)-1, 4210752);
}

/**
 * Draw the background layer for the GuiContainer (everything behind the items)
 */
protected void drawGuiContainerBackgroundLayer(float par1, int par2, int par3)
{       
    int var4 = this.mc.renderEngine.getTexture("/gui/recorder.png");
    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    this.mc.renderEngine.bindTexture(var4);
    int var5 = (this.width - this.xSize) / 2;
    int var6 = (this.height - this.ySize) / 2;
    this.drawTexturedModalRect(var5, var6, 0, 0, this.xSize, this.ySize);
    int var7;

    if(!this.isInit)
    {            
        this.discName = new GuiTextField(this.fontRenderer, var5 + 7, var6 + 16, 68, 10);
        this.musicPath = new GuiTextField(this.fontRenderer, var5 + 7, var6 + 39, 68, 10);

        this.discName.setFocused(true);
        this.musicPath.setFocused(false);

        this.discName.setText("Untitled");
        this.musicPath.setText("cat");

        this.isInit = true;
    }

    var7 = this.recorderInventory.getCookProgressScaled(24);
    this.drawTexturedModalRect(var5 + 111, var6 + 34, 176, 14, var7 + 1, 16);

    this.discName.drawTextBox();
    this.musicPath.drawTextBox();
}
} 

package net.minecraft.src;

import java.util.Iterator;

public class ContainerRecorder extends Container
{
private TileEntityRecorder recorder;
private int lastCookTime = 0;
private int lastBurnTime = 0;
private int lastItemBurnTime = 0;
public volatile String name;
public volatile String path;

public ContainerRecorder(InventoryPlayer par1InventoryPlayer, TileEntityRecorder par2TileEntityRecorder)
{
    this.recorder = par2TileEntityRecorder;
    this.addSlotToContainer(new Slot(par2TileEntityRecorder, 0, 87, 35));
    this.addSlotToContainer(new SlotRecorder(par1InventoryPlayer.player, par2TileEntityRecorder, 2, 148, 36));

    int var3;

    for (var3 = 0; var3 < 3; ++var3)
    {
        for (int var4 = 0; var4 < 9; ++var4)
        {
            this.addSlotToContainer(new Slot(par1InventoryPlayer, var4 + var3 * 9 + 9, 8 + var4 * 18, 84 + var3 * 18));
        }
    }

    for (var3 = 0; var3 < 9; ++var3)
    {
        this.addSlotToContainer(new Slot(par1InventoryPlayer, var3, 8 + var3 * 18, 142));
    }

    this.name = "Untitled";
    this.path = "cat";
}

public void addCraftingToCrafters(ICrafting par1ICrafting)
{
    super.addCraftingToCrafters(par1ICrafting);
    par1ICrafting.updateCraftingInventoryInfo(this, 0, this.recorder.currentBurnTime);
    par1ICrafting.updateCraftingInventoryInfo(this, 2, this.recorder.currentItemBurnTime);
}

/**
 * Updates crafting matrix; called from onCraftMatrixChanged. Args: none
 */
public void updateCraftingResults()
{
    super.updateCraftingResults();
    Iterator var1 = this.crafters.iterator();

    while (var1.hasNext())
    {
        ICrafting var2 = (ICrafting)var1.next();

        if (this.lastCookTime != this.recorder.currentBurnTime)
        {
            var2.updateCraftingInventoryInfo(this, 0, this.recorder.currentBurnTime);
        }

        if (this.lastItemBurnTime != this.recorder.currentItemBurnTime)
        {
            var2.updateCraftingInventoryInfo(this, 2, this.recorder.currentItemBurnTime);
        }
    }

    this.lastCookTime = this.recorder.currentBurnTime;
    this.lastBurnTime = this.recorder.burnTime;
    this.lastItemBurnTime = this.recorder.currentItemBurnTime;
}

public void updateProgressBar(int par1, int par2)
{
    if (par1 == 0)
    {
        this.recorder.currentBurnTime = par2;
    }

    if (par1 == 1)
    {
        this.recorder.burnTime = par2;
    }

    if (par1 == 2)
    {
        this.recorder.currentItemBurnTime = par2;
    }
}

public boolean canInteractWith(EntityPlayer par1EntityPlayer)
{
    return this.recorder.isUseableByPlayer(par1EntityPlayer);
}

public ItemStack func_82846_b(EntityPlayer par1EntityPlayer, int par2)
{
    ItemStack var3 = null;
    Slot var4 = (Slot)this.inventorySlots.get(par2);

    if (var4 != null && var4.getHasStack())
    {
        ItemStack var5 = var4.getStack();
        var3 = var5.copy();

        if (par2 == 2)
        {
            if (!this.mergeItemStack(var5, 3, 39, true))
            {
                return null;
            }

            var4.onSlotChange(var5, var3);
        }
        else if (par2 != 1 && par2 != 0)
        {
            if (RecorderRecipes.smelting().getSmeltingResult(var5.getItem().shiftedIndex) != null)
            {
                if (!this.mergeItemStack(var5, 0, 1, false))
                {
                    return null;
                }
            }
            else if (TileEntityRecorder.isItemFuel(var5))
            {
                if (!this.mergeItemStack(var5, 1, 2, false))
                {
                    return null;
                }
            }
            else if (par2 >= 3 && par2 < 30)
            {
                if (!this.mergeItemStack(var5, 30, 39, false))
                {
                    return null;
                }
            }
            else if (par2 >= 30 && par2 < 39 && !this.mergeItemStack(var5, 3, 30, false))
            {
                return null;
            }
        }
        else if (!this.mergeItemStack(var5, 3, 39, false))
        {
            return null;
        }

        if (var5.stackSize == 0)
        {
            var4.putStack((ItemStack)null);
        }
        else
        {
            var4.onSlotChanged();
        }

        if (var5.stackSize == var3.stackSize)
        {
            return null;
        }

        var4.func_82870_a(par1EntityPlayer, var5);
    }

    return var3;
}

public void setName(final String aName)
{
    this.name = aName;
    System.out.println("<ContainerRecorder>Record Name Set! Name: " + this.name);
    this.recorder.setDiscName(this.name);
    this.recorder.setMusicPath(this.path);
}

public void setPath(final String aPath)
{
    this.path = aPath;
    System.out.println("<ContainerRecorder>Record Path Set! Path: " + this.path);
    this.recorder.setDiscName(this.name);
    this.recorder.setMusicPath(this.path);
}
}

package net.minecraft.src；
导入java.util.Iterator；
公共类ContainerRecorder扩展了容器
{
专用TileEntityRecorder记录器；
private int lastCookTime=0；
private int lastBurnTime=0；
private int lastItemBurnTime=0；
公共易失性字符串名称；
公共易失性字符串路径；
公共容器记录（InventoryPlayer par1InventoryPlayer，TileEntityRecorder par2TileEntityRecorder）
{
this.recorder=par2titleentityrecorder；
这个.addSlotToContainer（新插槽（par2TileEntityRecorder，0,87,35））；
这个.addSlotToContainer（新的SlotRecorder（par1InventoryPlayer.player，par2TileEntityRecorder，2148，36））；
int-var3；
对于（var3=0；var3<3；++var3）
{
对于（int var4=0；var4<9；++var4）
{
这个.addSlotToContainer（新插槽（par1InventoryPlayer，var4+var3*9+9，8+var4*18，84+var3*18））；
}
}
对于（var3=0；var3<9；++var3）
{
这个.addSlotToContainer（新插槽（par1InventoryPlayer，var3,8+var3*18142））；
}
this.name=“Untitled”；
this.path=“cat”；
}
公共作废添加工艺流程（ICrafting PAR1工艺流程）
{
super.添加手工制作手稿（par1crafting）；
par1crafting.updateCraftingInventoryInfo（this，0，this.recorder.currentBurnTime）；
par1crafting.updateCraftingInventoryInfo（this，2，this.recorder.currentItemBurnTime）；
}
/**
*更新工艺矩阵；从onCraftMatrixChanged调用。参数：无
*/
public void updateCraftingResults（）
{
super.updateCraftingResults（）；
迭代器var1=this.crafters.Iterator（）；
while（var1.hasNext（））
{
ICrafting var2=（ICrafting）var1.next（）；
if（this.lastCookTime！=this.recorder.currentBurnTime）
{
var2.updateCraftingInventoryInfo（this，0，this.recorder.currentBurnTime）；
}
if（this.lastItemBurnTime！=this.recorder.currentItemBurnTime）
{
var2.updateCraftingInventoryInfo（this，2，this.recorder.currentItemBurnTime）；
}
}
this.lastCookTime=this.recorder.currentBurnTime；
this.lastBurnTime=this.recorder.burnTime；
this.lastItemBurnTime=this.recorder.currentItemBurnTime；
}
public void updateProgressBar（intpar1，intpar2）
{
如果（par1==0）
{
this.recorder.currentBurnTime=par2；
}
如果（par1==1）
{
this.recorder.burnTime=par2；
}
如果（par1==2）
{
this.recorder.currentItemBurnTime=par2；
}
}
公共布尔CAINTERACTWITH（EntityLayer Par1EntityLayer）
{
返回此.recorder.isUsableByPlayer（Par1EntityLayer）；
}
公共项堆栈函数\u 82846\u b（EntityLayer参数EntityLayer，int参数2）
{
ItemStack var3=null；
Slot var4=（Slot）this.inventorySlots.get（par2）；
if（var4！=null&&var4.getHasStack（）
{
ItemStack var5=var4.getStack（）；
var3=var5.copy（）；
if（par2==2）
{
if（！this.mergeItemStack（var5，3，39，true））
{
返回null；
}
var4.onSlotChange（var5，var3）；
}
else如果（par2！=1&&par2！=0）
{
if（RecorderRecipes.Melting（）.GetMeltingResult（var5.getItem（）.shiftedIndex）！=null）
{
if（！this.mergeItemStack（var5，0，1，false））
{
返回null；
}
}
else if（TileEntityRecorder.isItemFuel（var5））
{
if（！this.mergeItemStack（var5，1，2，false））
{
返回null；
}
}
否则如果（par2>=3&&par2<30）
{
if（！this.mergeItemStack（var5、30、39、false））
{
返回null；
}
}
else if（par2>=30&&par2<39&&！this.mergeItemStack（var5，3，30，false））
{
返回null；
}
}
如果（！this.mergeItemStack（var5、3、39、false））为else
{
返回null；
}
if（var5.stackSize==0）
{
var4.putStack（（ItemStack）null）；
}
其他的
{
var4.onSlotChanged（）；
}
if（var5.stackSize==var3.stackSize）
{
返回null；
}
var4.func \-u 82870 \-a（PAR1实体层，var5）；
}
返回变量3；
}
public void setName（最终字符串aName）
{
this.name=aName；
System.out.println（“记录名称集！名称：“+this.Name”）；
this.recorder.setDiscName（this.name）；
this.recorder.setMusicPath（this.path）；
}
公共void设置路径（最终字符串aPath）
{
这条路=