UUIDParser.java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Date;
import java.util.UUID;

public class UUIDParser {

    /*
     * UUIDParser by FisheyLP
     */

    private String name;
    private UUID uuid;
    private Date lastChanged;
    protected String content;

    public UUIDParser(String name) {
        content = getURlContent("https://api.mojang.com/users/profiles/minecraft/"+name+"?at");
        this.name = new UUIDParser(getUUID()).getName();
        lastChanged = genLastChanged();
    }

    public UUIDParser(UUID uuid) {
        content = getURlContent("https://api.mojang.com/user/profiles/"+uuid.toString().replace("-", "")+"/names");
        this.uuid = uuid;
        lastChanged = genLastChanged();
    }

    public UUID getUUID() {
        return genUUID();
    }
    public String getName() {
        return genName();
    }
    public Date getLastChanged() {
        return lastChanged;
    }

    private UUID genUUID() {
        if(uuid != null) return uuid;
        for(String key : content.split(",")) {
            if(key.startsWith("id")) {
                String uuid = key.split(":")[1];
                uuid = uuid.substring(0, 8) + "-" + uuid.substring(8, 12) + "-"
                        + uuid.substring(12, 16) + "-" + uuid.substring(16, 20)
                        + "-" + uuid.substring(20, 32);
                return UUID.fromString(uuid);
            }
        }
        return null;
    }

    private String genName() {
        if(name != null) return name;
        for(String p : content.split("\\}\\,\\{")) {
            if(p.contains("changedToAt")) {
                for(String t : p.split(",")) {
                    if(t.startsWith("name:"))
                        return t.split(":")[1];
                }
            } else {
                return p;
            }
        }
        return null;
    }

    private Date genLastChanged() {
        if(lastChanged != null) return lastChanged;
        if(uuid == null) {
            return new UUIDParser(getUUID()).getLastChanged();
        }
        if(content == null || !content.contains("changedToAt")) return null;

        String[] array = content.split("\\},\\{");
        for(String p : array) {
            if(p.contains("changedToAt")) {
                for(String t : p.split(",")) {
                    if(t.startsWith("changedToAt:"))
                        return new Date(Long.parseLong(t.substring(0, t.length() - 1).split(":")[1]));
                }
            }
        }
        return null;
    }
    private String getURlContent(String website) {
        String contents = "";
        try {
            URL url = new URL(website);
        BufferedReader in = new BufferedReader(new InputStreamReader(
                url.openStream()));

        String inputLine;
        while ((inputLine = in.readLine()) != null)
            contents = contents + inputLine;
            in.close();

        } catch(Exception e) {}
        return getRightContent(contents);
    }
    private String getRightContent(String str) {
        str = str.substring(1, str.length() - 1).replace("\"", "").replace("\n", "");

        String[] arrays = str.split("\\}\\,\\{");
        for(String s : arrays) {
            if(s.contains("name:") && (s.contains("changedToAt:") || s.contains("id"))) {
                return s;
            }
        }
        return null;
    }
}