package hashy;

import org.dreambot.api.script.AbstractScript;
import org.dreambot.api.script.Category;
import org.dreambot.api.script.ScriptManifest;

/**
 * Created by Hashtag on 18.10.2016.
 */
@ScriptManifest(category = Category.MISC, name = "MassAccounts", author = "Hashtag", version = 1.0, description = "Adds mass accounts to the client.")
public class Main extends AbstractScript {

    @Override
    public void onStart() {
        new InputAccounts(this);
    }

    public void start(String accs) {
        String[] ss = accs.split("\n");
        int i = 0;
        for (String s : ss) {
            String[] info = s.split(":");
            addAccount(info[0],info[1],info[2],info.length > 3 ? info[3] : "");
            log("Added account " + info[0]);
            i++;
        }
        log(i + " accounts added. Reopen client =)");
        stop();
    }

    @Override
    public int onLoop() {
        return 200;
    }

}

^ MAIN CLASS ^
v  GUI CLASS v

package hashy;

import javax.swing.*;
import java.awt.*;

/**
 * Created by Hashtag on 18.10.2016.
 */
public class InputAccounts extends JFrame {

    public InputAccounts(Main main) {
        setTitle("Input accounts");
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        setPreferredSize(new Dimension(250, 300));
        setLayout(new GridLayout(2,1));

        JTextArea accs = new JTextArea("nickname:email:pass:pin\nnickname:email:pass:\nnickname:email:pass");
        getContentPane().add(accs);

        JButton btn = new JButton("Start adding");
        btn.addActionListener(l -> {
            main.start(accs.getText());
            dispose();
        });
        getContentPane().add(btn);
        pack();
        setVisible(true);
    }

}