Rock-paper-scissor

import java.awt.; import java.awt.event.; import javax.swing.; import java.util.;

public class Lab4 extends JFrame implements ActionListener {

private JButton rockButton, paperButton, scissorsButton;
private JTextField textField, textField2;

public static void main(String[] args) {
    Lab4 paper = new Lab4();
    paper.setSize(250,150); // Setting up the pane
    paper.createGUI();/*www.j  av  a 2s  .  co m*/
    paper.show();
}

private void createGUI() {
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    Container window = getContentPane();
    window.setLayout(new FlowLayout());

    textField = new JTextField(15); // Setting up the buttons/fields
    window.add(textField);

    textField2 = new JTextField(15);
    window.add(textField2);

    rockButton = new JButton("Rock");
    window.add(rockButton);
    rockButton.addActionListener(this);

    paperButton = new JButton("Paper");
    window.add(paperButton);
    paperButton.addActionListener(this);

    scissorsButton = new JButton("Scissors");
    window.add(scissorsButton);
    scissorsButton.addActionListener(this);

}

public void actionPerformed(ActionEvent event) {
    Object source = event.getSource();
    int playerChoice; 
    int compChoice;   
    String winner;
    Random randomSeed = new Random(); 
    if (source == rockButton) { 
        playerChoice = 0;
    }
    else if (source == paperButton){ 
        playerChoice = 1;
    } else {
        playerChoice = 2; 
    }
    compChoice = randomSeed.nextInt(3); 
    winner = findWinner(playerChoice, compChoice);
    textField.setText("Winner is " + winner + "!"); 

    if (compChoice == 0) { 
        textField2.setText("Computer choice is rock");
    } else if (compChoice == 1) {
        textField2.setText("Computer choice is paper");
    } else {
        textField2.setText("Computer choice is scissors");
    }

}
private String findWinner(int playerChoice, int compChoice) {
    String winner;
    if (playerChoice == compChoice) { 
        winner = "Noone, it's a tie";
    } else if (playerChoice == 0 && compChoice == 1) {
        winner = "Computer"; 
    } else if (playerChoice == 1 && compChoice == 2) {
        winner = "Computer"; 
    } else if (playerChoice == 2 && compChoice == 0) {
        winner = "Computer"; 
    } else {
        winner = "Player"; 
    } return winner; 
}

}