Swing | GUI 어플리케이션 만들기 | 가위바위보 게임

1. 프레임 만들기

2. 프레임에 스윙 컴포넌트 붙이기

3. main() 메서드 작성

 

package kr.or.kihd.swingtest;

import javax.swing.JFrame;

public class SwingTest1 {

	public static void main(String[] args) {
		
		JFrame jFrame = new JFrame();
		jFrame.setTitle("프레임연습");
		jFrame.setSize(300, 300);
		jFrame.setVisible(true);
		
	}

}

package kr.or.kihd.swingtest;

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;

import javax.swing.JButton;
import javax.swing.JFrame;

public class SwingTest2 extends JFrame{

	public SwingTest2() {
		super("컴포넌트 추가하기");
		//프레임이 닫힐때 프로그램이 같이 종료된다.
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		Container contentPane = getContentPane();
		contentPane.setLayout(new FlowLayout());
		contentPane.setBackground(Color.yellow);
		
		setSize(500, 500);
		setVisible(true);
		
		contentPane.add(new JButton("확인"));
		contentPane.add(new JButton("취소"));

	}
	
	public static void main(String[] args) {
		new SwingTest2();
		
	}

}

---

Swing 

package kr.or.kihd.swingtest;

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class SwingTest3 extends JFrame{

	Container container;
	JButton btn1, btn2, btn3, btn4;
	
	public SwingTest3() {
		super("버튼 제작 테스트");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		container = getContentPane();
		container.setLayout(new FlowLayout());
		
		//일반 버튼
		btn1 = new JButton("일반 버튼");
		btn1.addActionListener(new EventHandler());
		container.add(btn1);
		
		//컬러와 모양을 바꾼 버튼
		btn2 = new JButton("버튼2");
		btn2.setOpaque(true);
		btn2.setForeground(Color.blue);
		btn2.setBackground(Color.yellow);
		btn2.setFont(new Font("맑은고딕",Font.BOLD,20));
		btn2.addActionListener(new EventHandler());
		container.add(btn2);
		
		//비활성화 버튼
		btn3 = new JButton("버튼 3");
		btn3.setEnabled(false);
		btn3.addActionListener(new EventHandler());
		container.add(btn3);
		
		//토굴 버튼
		btn4 = new JButton("토굴");
		btn4.addActionListener(new EventHandler());
		container.add(btn4);
		
		
		setSize(300, 300);
		setVisible(true);
				
		
		setSize(300, 300);
		this.setLocation(500,300);
		setVisible(true);
	}
	
	public class EventHandler implements ActionListener{
		@Override
		public void actionPerformed(ActionEvent e) {
			
			Object obj = e.getSource();
			
			if(obj == btn1) {
				System.out.println("위치 : " + btn1.getX() +
						", " + btn1.getY() + 
						" 크기: " + btn1.getSize());
			}
			else if(obj == btn1) {
				System.out.println("폰트 : " + btn2.getFont() +
						"글자색 : " + btn2);
			}
			else {
				if(btn1.isVisible()) {
					btn1.setVisible(false);
					btn2.setVisible(false);
					btn3.setVisible(false);
				}else {
					btn1.setVisible(true);
					btn2.setVisible(true);
					btn3.setVisible(true);
				}
			}
			
		}
	}
	
	
	public static void main(String[] args) {
		new SwingTest3();

	}

}

---

Swing 이벤트 유니코드 출력

package kr.or.kihd.swingtest;

import java.awt.Color;
import java.awt.Font;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class KeyEventTest extends JFrame {
	
	JPanel jPanel = new JPanel();
	JLabel[] lbMsg; 
	
	public KeyEventTest() {
		super("키 이벤트 연습");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		setContentPane(jPanel);
		
		lbMsg = new JLabel[3];
		
		lbMsg[0] = new JLabel("키코드값");
		lbMsg[1] = new JLabel("유니코드값");
		lbMsg[2] = new JLabel("키보드의 문자열");
		
		for(int i = 0 ; i<lbMsg.length; i++){
			jPanel.add(lbMsg[i]);
			lbMsg[i].setOpaque(true); //배경색을 불투명하게함.
			lbMsg[i].setBackground(Color.green);
			lbMsg[i].setFont(new Font("맑은고딕",Font.BOLD,20));
			
		}
		setSize(500,300);
		setLocation(500,300);
		setVisible(true);
		
		jPanel.addKeyListener(new EventHandler());
		jPanel.requestFocus();
		
	}
	
	//내부클래스
	public class EventHandler extends KeyAdapter{
		@Override
		public void keyPressed(KeyEvent ke) {
			int keyCode = ke.getKeyCode();
			char keyChar = ke.getKeyChar();
			
			lbMsg[0].setText(Integer.toString(keyCode));
			lbMsg[1].setText(Character.toString(keyChar));
			lbMsg[2].setText(ke.getKeyText(keyCode));
		}
	}
	
	
	
	public static void main(String[] args) {
		new KeyEventTest();
		
	}

}

---

가위바위보 게임 만들기

img.zip

0.02MB

package kr.or.kihd.swingtest;

import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class GBBGame extends JFrame {
	
	ImageIcon[] img = {
		new ImageIcon("img/kawi.jpg"),
		new ImageIcon("img/bawi.jpg"),
		new ImageIcon("img/bo.jpg")
	};
	
	//가위바위보 버튼
	class SelectPanel extends JPanel {
		JButton[] btn = new JButton[3];
		public SelectPanel() {
			setBackground(Color.blue);
			for(int i = 0; i<img.length; i++) {
				btn[i] = new JButton(img[i]);
				this.add(btn[i]); //패널에 버튼을 add.
				
				btn[i].addActionListener(new EventHandler());
			}
		}
	}
	SelectPanel sPanel = new SelectPanel();
	
	//가위바위보 결과
	class ResultDisplay extends JPanel{
		JLabel userlb = new JLabel("user");
		JLabel com = new JLabel("computer");
		JLabel result = new JLabel("winner");
		public ResultDisplay() {//패널에 연결
			setBackground(Color.yellow);
			add(userlb); add(result); add(com);
		}
		
		
		public void output(Icon img, Icon comImage, String res) {
			userlb.setIcon(img);
			userlb.setHorizontalTextPosition(JLabel.LEFT);
			com.setIcon(comImage);
			result.setText(res);
			result.setForeground(Color.red);
			result.setFont(new Font(Font.DIALOG, Font.BOLD, 20));
		}
		
	}
	ResultDisplay resultDisplay = new ResultDisplay();
	class EventHandler implements ActionListener{ //버튼 눌렀을때 이벤트가 되도록함

		@Override
		public void actionPerformed(ActionEvent ae) {
			//사용자가 선택한 버튼
			JButton btnSrc = (JButton) ae.getSource();
			//컴퓨터의 랜덤선택 (0:가위, 1:바위, 2:보)
			int btnCom = (int) (Math.random()*3);
			
			//가위바위보 결과값을 저장할 문자열 선언
			String result = "";
			
			//사용자가 이기는 경우
			if(btnSrc.getIcon() == img[0] && btnCom == 2 || 
					btnSrc.getIcon() == img[1] && btnCom == 0 ||
					btnSrc.getIcon() == img[2] && btnCom == 1) 
				result = "당신이 이겼습니다.";
			else if(btnSrc.getIcon() == img[0] && btnCom == 0 || 
				btnSrc.getIcon() == img[1] && btnCom == 1 ||
				btnSrc.getIcon() == img[2] && btnCom == 2)
				result = "비겼습니다";
			else
				result = "당신이 졌습니다.";
			//결과값을 출력한다.
			resultDisplay.output(btnSrc.getIcon(),img[btnCom], result);
		}
		
	}
	
	
	public GBBGame() {
		super("가위 바위 보 게임");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		add(sPanel, "South");
		add(resultDisplay,"Center");
		
		setSize(500, 500);
		setLocation(500, 150);
		setVisible(true);
		}
		
	public static void main(String[] args) {
		new GBBGame();
		
	}

}

---

Process(프로세스) 와 Thread(쓰레드)

 

Swing Thread

package kr.or.kihd.swingtest;

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class SwingThreadTest extends JFrame{

	public SwingThreadTest() {
		super("스레드 활용");
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		Container container = getContentPane();
		container.setLayout(new FlowLayout());
		
		JLabel jLabel = new JLabel();
		jLabel.setFont(new Font("Dotum", Font.ITALIC, 60));
		
		container.add(jLabel);
		
		setSize(300, 200);
		setLocation(500, 300);
		setVisible(true);
		
		TimeThread thread = new TimeThread(jLabel);
		thread.start();
	}

	public static void main(String[] args) {
		new SwingThreadTest();
		
	}

}
class TimeThread extends Thread {
	JLabel timelb;
	public TimeThread(JLabel timelb) {
		this.timelb = timelb;
	}
	
	@Override
	public void run() {
		int n = 0;
		
		while(true) {
			timelb.setText(" " + Integer.toString(n) + " ");
			n++;
			try {
				sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	
}

 

SwingThreadFlag