Name Gui Tutorial Code

Full GuiName
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package net.minecraft.src;

import java.awt.image.BufferedImage;
import org.lwjgl.opengl.GL11;

public class GuiName extends GuiScreen {
    private BufferedImage img;
    private int imgID = 1000;
    public GuiName(EntityFlyingSpiderPig entity)
    {
        mob=entity;
    }

    private GuiTextField textfield;
    public EntityFlyingSpiderPig mob;

    public void initGui() {
        try {
            img = ModLoader.loadImage(mc.renderEngine, "/mods/name.png");
            mc.renderEngine.setupTexture(img, imgID);
        } catch (Exception e) {
            e.printStackTrace();
        }
        controlList.clear();
        controlList.add(new GuiButton(1, width / 2 - 49, height / 2 + 20, 70, 20, "Enter"));
        textfield = new GuiTextField(this, fontRenderer, width / 2 - 87, height / 2 - 10, 150, 20, "");
        textfield.isFocused = false;
        textfield.setMaxStringLength(16);

    }
    protected void actionPerformed(GuiButton guibutton)
    {
        if(guibutton.id == 1)
        {
            mob.Name = textfield.getText();
            mc.displayGuiScreen(null);
        }
    }
    protected void keyTyped(char c, int i)
    {
        super.keyTyped(c, i);
        textfield.textboxKeyTyped(c, i);
    }
    protected void mouseClicked(int i, int j, int k)
    {
        super.mouseClicked(i, j, k);
        textfield.mouseClicked(i, j, k);
    }
    public boolean doesGuiPauseGame()
    {
        return false;
    }
    public void onGuiClosed()
    {
    }
    public void drawScreen(int i, int j, float f)
    {
        drawDefaultBackground();
        int k = width / 2 - 100;
        int l = height  / 2 - 40;
        try {
            int tempvar = mc.renderEngine.getTexture("/mods/name.png");
            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
            mc.renderEngine.bindTexture(tempvar);
            drawTexturedModalRect(k, l, 0, 0, 176, 166);
        }
        finally {
        }
        textfield.drawTextBox();
        drawCenteredString(fontRenderer, "Enter the Name of your Mob", width / 2 - 10, height / 2 - 35, 0xffffff);
        super.drawScreen(i, j, f);
    }


}
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Render File Code Snippet
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if(entity.Name.length() > 0 && entity.Name != "")
        {
            renderLivingLabel(entity, entity.Name, d, d1, d2, 64);
        }
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EntityX Code Snippets
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ModLoader.OpenGUI(entityplayer, new GuiName(this));

nbttagcompound.setString("Name", Name);

Name = nbttagcompound.getString("Name");

String Name;