import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
import java.util.stream.*;
import java.lang.String;



public class HumanResources {

    public  List<Employee> hr = new ArrayList<>();


    public void init()  {
        hr.add(new Employee("Roland", 39495, 60000));
        hr.add(new Employee("Beate", 49595, 30000));
        hr.add(new Employee("Hermann", 94959, 50000));
    };

    public void print1(){
        for (Employee p : hr){
            p.print();
        }
    }


    public void print2(){
        for (int i = 0; i < hr.size(); i++){
            hr.get(i).print();
        }
    }

    //using the ListIterator
    public void print3 () {
        for (ListIterator<Employee> li = hr.listIterator();
                                       li.hasNext();    )
            li.next().print();
    }

    //using streams technique
    public void print4 () {
        hr.stream().forEach(p -> p.print());
        hr.stream().forEach (Employee :: print);

    }


    public void dispense() {
        print1();
        for (Employee c : hr){
            c.increase_salary(100);
            hr.stream().forEach((p) -> p.increase_salary(100));
            print1();

        }
    }







    public static void main (String [] args){
        HumanResources pa = new HumanResources();
        pa.init();
        pa.dispense();
        pa.toString();

        System.out.println(pa);
    }


}








import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextArea;





public class MyJFrameButton extends JFrame {

    private final JButton schalter = new JButton("Show Employees");
    private final JLabel anzeige = new JLabel(" ");
    private final JLabel anzeige2 = new JLabel(" ");




public MyJFrameButton (String kopfZeile){
    super(kopfZeile);
    add(schalter, java.awt.BorderLayout.NORTH);
    add(anzeige, java.awt.BorderLayout.CENTER);
    add(anzeige2, java.awt.BorderLayout.SOUTH);
    schalter.addActionListener(ActionEvent -> anzeige.setText("Our company has the following employees"));
    anzeige2.setText(xx);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(500, 200);
    setVisible(true);




}





public static void main (String [] args){
    javax.swing.SwingUtilities.invokeLater(
            () -> new MyJFrameButton("Siemens AG"));

    HumanResources xx = new HumanResources();
    xx.init();
    xx.dispense();
    xx.toString();


}


}