com s 227 run code

package hw1;

public class WirelessPrinterTest {
  public static void main(String[] args) {
    WirelessPrinter printer = new WirelessPrinter(1.0, 500);
    // turn it on and check its state
    printer.turnOn();
    System.out.println("Power: true => " + printer.isOn()); // expected true
    System.out.println("Connected: true => " + printer.isConnected()); // expected true
    System.out.println("Paper Percent: 100 => " + printer.getPaperLevel()); // expected 100(%)
    System.out.println("Ink Level: 1.0 => " + printer.getInkLevel()); // expected 1.0

    // try print
    System.out.println(" ");
    printer.print(50);
    System.out.println("Paper Level: 90 => " + printer.getPaperLevel()); // expected 90
    //System.out.println("Ink Level: 0.95 => " + printer.getInkLevel()); // expected 0.95
    System.out.println("Pages Printed: 50 => " + printer.getTotalPagesPrinted()); //expected 50
    System.out.println("Paper Used: 50 => " + printer.getTotalPaperUsed()); // expected 50

    // try print more pages than what is left in the tray
    System.out.println(" ");
    printer.print(500); // out of paper
    System.out.println("Paper Level: 0 => " + printer.getPaperLevel()); // expected 0
    System.out.println("Ink Level: 0.5 => " + printer.getInkLevel()); // expected 0.5
    System.out.println("Pages Printed: 500 => " + printer.getTotalPagesPrinted());//expected 500
    System.out.println("Pages Used: 500 => " + printer.getTotalPaperUsed()); // expected 500

    // try loadPaper method
    System.out.println(" ");
    printer.loadPaper(1000);
    System.out.println("Paper Level Exact: 500 => " + printer.getPaperLevelExact()); // expected 500

    // try replace the cartridge
    System.out.println(" ");
    printer.replaceCartridge();
    System.out.println("Ink Level: 1.0 => " + printer.getInkLevel()); // expected 1.0

    // try disconnect method
    System.out.println(" ");
    printer.disconnect(); // network goes off
     printer.print(50);
    System.out.println("Paper Level Exact: 500 => " + printer.getPaperLevelExact()); // expected 500
    System.out.println("Ink Level: 1.0 => " + printer.getInkLevel()); // expected 1.0
  }
}