RPS

public void spielen(){
            JFrame frame1=new JFrame();
            JPanel panel1=new JPanel();
            JLabel label1=new JLabel("Choose: ");
            String list1[]={"Rock", "Paper", "Sissors"};
            JComboBox combobox1=new JComboBox(list1);
            JButton button1=new JButton("Submit");

            frame1.setSize(1280,720);
            frame1.setResizable(false);
            frame1.setVisible(true);
            frame1.add(panel1);
            panel1.add(label1);
            panel1.add(combobox1);
            panel1.add(button1);
            button1.addActionListener(new ActionListener(){
                @Override
                public void actionPerformed(ActionEvent e){
                    Random generator=new Random();

                    int randomNumber=(generator.nextInt(2))+1;
                    String computer=null;
                    String player=(String)combobox1.getSelectedItem();

                    if(randomNumber==1){
                        computer="Rock";
                    }
                    if(randomNumber==2){
                        computer="Paper";
                    }
                    if(randomNumber==3){
                        computer="Sissors";
                    }

                //Draw
                if(computer.equals("Sissors")&&player.equals("Sissors")){
                    System.out.println("Draw!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Rock")&&player.equals("Rock")){
                    System.out.println("Draw!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Paper")&&player.equals("Paper")){
                    System.out.println("Draw!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }

                //PlayerWins
                if(computer.equals("Sissors")&&player.equals("Rock")){
                    System.out.println("Player wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scorePlayer=scorePlayer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Rock")&&player.equals("Paper")){
                    System.out.println("Player wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scorePlayer=scorePlayer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Paper")&&player.equals("Sissors")){
                    System.out.println("Player wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scorePlayer=scorePlayer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }

                //ComputerWins
                if(computer.equals("Rock")&&player.equals("Sissors")){
                    System.out.println("Computer wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scoreComputer=scoreComputer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Paper")&&player.equals("Rock")){
                    System.out.println("Computer wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scoreComputer=scoreComputer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }
                if(computer.equals("Sissors")&&player.equals("Paper")){
                    System.out.println("Computer wins!");
                    System.out.println("You chose: " + player);
                    System.out.println("Computer chose: " + computer);
                    scoreComputer=scoreComputer+1;
                    System.out.println("Score Player: " + scorePlayer);
                    System.out.println("Score Computer: " + scoreComputer);
                }


                System.out.println("--------------------------------------");
                frame1.dispose();
                spielen();
            }
        });
    }