CustomNPC-Plus/src/main/java/noppes/npcs/client/VersionChecker.java

package noppes.npcs.client;

import net.minecraft.client.Minecraft;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.event.ClickEvent;
import net.minecraft.event.ClickEvent.Action;
import net.minecraft.util.ChatComponentTranslation;

public class VersionChecker extends Thread {
    private int revision = 15;

    public VersionChecker() {

    }

    public void run() {
        String name = '\u00A7' + "cCustomNPC+" + '\u00A7' + "f";
        String link = '\u00A7' + "9" + '\u00A7' + "nClick here";
        String text = name + " installed. For more info " + link;

        EntityPlayer player;
        try {
            player = Minecraft.getMinecraft().thePlayer;
        } catch (NoSuchMethodError e) {
            return;
        }
        while ((player = Minecraft.getMinecraft().thePlayer) == null) {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        ChatComponentTranslation message = new ChatComponentTranslation(text);
        message.getChatStyle().setChatClickEvent(new ClickEvent(Action.OPEN_URL, "https://www.curseforge.com/minecraft/mc-mods/customnpc-plus"));
        player.addChatMessage(message);
    }
}