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while (!clip.isRunning())
Thread.sleep(10);
while (clip.isRunning())
Thread.sleep(10);
System.out.println("Playing");
} catch(Exception ex) {
System.out.println("Error with playing sound.");
ex.printStackTrace();
}
}

}

< ActionExam.java > // TFT LCD 에 기본 화면 틀을 출력
package com.example.user.appclient;

import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalOutput;
import com.pi4j.io.gpio.PinState;
import com.pi4j.io.gpio.RaspiPin;

import java.awt.*;
import java.awt.event.*;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.text.BadLocationException;

pi4j
public class ActionExam extends Frame implements ActionListener
{

JButton btn1 = new JButton(" 대출");
JButton btn2 = new JButton(" 반납");
MainFrame mf = null;

public ActionExam()
{
super(" 우산대여기");

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