How to make genral setting to find printer terminal with one command

I like the library but I can’t understand how to set a method with witch will connect to the terminal printer.If the printer is network based with Ip and port or the printer is connected to laptop/pc with a cable I am not very familiar with the connection types.I need this for a project witch the user can use what terminal printer he have.I need with one general setting the user can connect the printer.I am open to any suggestions.

If I use this example I need to change only the printer name value with the name of actual printer

PrintService printService = PrinterOutputStream.getPrintServiceByName("printerName");
 PrinterOutputStream printerOutputStream = new PrinterOutputStream(printService);
 EscPos escpos = new EscPos(printerOutputStream);
 escpos.writeLF("Hello Wold");
 escpos.feed(5);
 escpos.cut(EscPos

if so what printers support can you give me live example for printer name

[mikebgrep]

@anastaciocintra Thank you man that is awesome.I actually try one time to do for each loop in the builder but I don’t know why everything was red.But this is proper receipt.Thank you again. ps: I was missing a ; to can make the for loop

[anastaciocintra]

Sure man, we have some, for example map with streams, but I think that your algorithm is pretty good and I made some little trick format adjusts , congrats, you have made a good printed receipt work!

import com.github.anastaciocintra.escpos.EscPos;
import com.github.anastaciocintra.escpos.EscPosConst;
import com.github.anastaciocintra.escpos.Style;
import com.github.anastaciocintra.output.PrinterOutputStream;

import javax.print.PrintService;
import java.io.IOException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;


class Order {
    public String tableNumber;
    public ArrayList<OrderProduct> products;
    public double totalPrice;

    public Order(String tableNumber, ArrayList<OrderProduct> products){
        this.tableNumber = tableNumber;
        this.products = products;
        totalPrice = 143.0;
    }
}

class OrderProduct {
    public String productCode;
    public String productName;
    public int productQty;
    public double productPrice;


    public OrderProduct(String productCode, String productName, int productQty, double productPrice) {
        this.productCode = productCode;
        this.productName = productName;
        this.productQty = productQty;
        this.productPrice = productPrice;

    }


    public double getPrice(int qty) {
        return this.productPrice * qty;
    }

    @Override
    public String toString() {
        String productPriceStr = String.format("%.2f x %d", productPrice,productQty);
        String qtyPriceStr = String.format("%.2f", getPrice(productQty));
        return String.format("%-15s%12s   %10s",productName,productPriceStr, qtyPriceStr );
    }

}

    public class MikebGrep {

    void printRecipent(String printerName){

//        public void loadData() {
            ArrayList<OrderProduct> products = new ArrayList();
            OrderProduct orderProd = new OrderProduct("4324", "demo product 1", 1,14.4);
            OrderProduct orderProd1 = new OrderProduct("4324", "demo product 2", 2,30.4);
            OrderProduct orderProd2= new OrderProduct("4324", "demo product 3", 8,74.8);
            products.add(orderProd);
            products.add(orderProd1);
            products.add(orderProd2);

            Order order = new Order("1", products);
//        }


        //this call is slow, try to use it only once and reuse the PrintService variable.
        PrintService printService = PrinterOutputStream.getPrintServiceByName(printerName);
        try {
            PrinterOutputStream printerOutputStream = new PrinterOutputStream(printService);
            EscPos escpos = new EscPos(printerOutputStream);

            Style title = new Style()
                    .setFontSize(Style.FontSize._3, Style.FontSize._3)
                    .setJustification(EscPosConst.Justification.Center);

            Style subtitle = new Style(escpos.getStyle())
                    .setBold(true)
                    .setUnderline(Style.Underline.OneDotThick);
            Style bold = new Style(escpos.getStyle())
                    .setBold(true);

            escpos.writeLF(title,"Mikebgrep\n")
                    .writeLF(title,"C o f f e e")
                    .feed(3)
                    .writeLF(subtitle.setJustification(EscPosConst.Justification.Center), "R E C E I P T")
                    .feed(2)
                    .writeLF("Item              Unit Price      Amount")
                    .writeLF("----------------------------------------")
                    .feed(2);
            order.totalPrice =0;
            for(OrderProduct product: order.products){
                escpos.writeLF(product.toString());
                order.totalPrice += product.getPrice(product.productQty);
            }

            String total = String.format("$ %.2f", order.totalPrice);
            escpos.writeLF("----------------------------------------")
                    .feed(2)
                    .writeLF(bold,
                            "TOTAL                         " + String.format("%10s",total))
                    .writeLF("----------------------------------------")
                    .writeLF("     Thank you for shopping with us     ")
                    .writeLF("            Have a nice day             ")

                    .feed(8)
                    .cut(EscPos.CutMode.FULL);



            // do not forget to close...
            escpos.close();


        } catch (IOException ex) {
            Logger.getLogger(MikebGrep.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    public static void main(String[] args) {
        if(args.length!=1){
            System.out.println("Usage: java -jar getstart.jar (\"printer name\")");
            System.out.println("Printer list to use:");
            String[] printServicesNames = PrinterOutputStream.getListPrintServicesNames();
            for(String printServiceName: printServicesNames){
                System.out.println(printServiceName);
            }

            System.exit(0);
        }
        MikebGrep obj = new MikebGrep();
        obj.printRecipent(args[0]);


    }
}