Windowbuilder/Swing(10.27수업)

항상 설정
contentPane-Layout-absolute

button이벤트
Add event handle-mouse-mouseClicled

---

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

public class JFrameEx01 extends JFrame {

	private JPanel contentPane;
	private JLabel lbl1;
	private JLabel lbl2;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JFrameEx01 frame = new JFrameEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}
	/**
	 * Create the frame.
	 */
	public JFrameEx01() {
		getContentPane().setLayout(null);
		setTitle("새로운 프레임");
		
		System.out.println(getTitle());
		
		setResizable(false);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBackground(Color.CYAN);
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		lbl1 = new JLabel("New label");
		lbl1.setBounds(39, 20, 157, 16);
		contentPane.add(lbl1);
		
		JButton btn = new JButton("내용 복사");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//lbl2.setText(lbl1.getText());
			}
		});
		btn.setBounds(26, 51, 170, 22);
		contentPane.add(btn);
		
		lbl2 = new JLabel("New label");
		lbl2.setBounds(34, 84, 162, 22);
		contentPane.add(lbl2);
		
		
	}
}

JLabel / JButton

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class JTextFieldEx01 extends JFrame {

	private JPanel contentPane;
	private JTextField tf;
	private JPasswordField pf;
	private JButton btn;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JTextFieldEx01 frame = new JTextFieldEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JTextFieldEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		tf = new JTextField();
		tf.setText("HELLO");
		tf.setBounds(28, 16, 200, 32);
		contentPane.add(tf);
		tf.setColumns(10);
		
		pf = new JPasswordField();
		pf.setEchoChar('*');
		pf.setBounds(28, 53, 200, 32);
		contentPane.add(pf);
		
		btn = new JButton("내용 보기");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				System.out.println(tf.getText());
				//System.out.println(pf.getText());  deprecated
				System.out.println(new String (pf.getPassword()));
			}
		});
		btn.setBounds(28, 88, 200, 32);
		contentPane.add(btn);
	}
}

JLabel 대신 TextField - edirable(false)
PasswordField - 암호화는 아님 텍스트를 안보이게 함
echoChar 에서 모양 변경 가능

---

코드를 입력하세요import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class JTextFieldEx02 extends JFrame {

	private JPanel contentPane;
	private JTextField tf1;
	private JButton btn;
	private JTextField tf2;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JTextFieldEx02 frame = new JTextFieldEx02();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JTextFieldEx02() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		tf1 = new JTextField();
		tf1.setBounds(31, 6, 130, 26);
		contentPane.add(tf1);
		tf1.setColumns(10);
		
		JButton btn = new JButton("대문자로 변경");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
			/* System.out.println(tf1.getText());
			 String[] names = tf1.getText().split(" ");
		
		for(int i=0 ; i<names.length ; i++) {
			names[i] = names[i].substring(0,1).toUpperCase()
					+names[i].substring(1);
			
				//System.out.println(names[i]);
			}
				String ename = String.join(" ",  names);
				//System.out.println(ename);
				tf2.setText(ename);
				tf1.setText(""); */
				
				tf2.setText(capitalize(tf1.getText()));
			}
		});
		btn.setBounds(31, 44, 130, 26);
		contentPane.add(btn);
		
		tf2 = new JTextField();
		tf2.setEditable(false);
		tf2.setBounds(31, 81, 130, 26);
		contentPane.add(tf2);
		tf2.setColumns(10);
	}
	//단어의 첫글자만 대문자화하는 메서드
	public String capitalize(String name) {
		String[] names = tf1.getText().split(" ");
		
		for(int i=0 ; i<names.length ; i++) {
			names[i] = names[i].substring(0,1).toUpperCase()
					+names[i].substring(1);	
	}
		return String.join("", names);
	}

}

첫 글자만 소문자를 대문자로 변경

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.ScrollPaneConstants;
import javax.swing.border.EmptyBorder;

public class JTextAreaEx01 extends JFrame {

	private JPanel contentPane;
	private JTextArea textArea;
	private JScrollPane scrollPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JTextAreaEx01 frame = new JTextAreaEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JTextAreaEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JButton btn = new JButton("New button");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//System.out.println(textArea.getText());  //입력불러오기
				
				//overwriting
				//textArea.setText("Hello TextArea\nHello TextArea\nHello TextArea\n"); //여러줄 ///editable-false 더이상 작성 
				
				//추가
				textArea.append("Hello TextArea Hello TextAreaHello TextAreaHello TextArea \nHello TextArea\nHello TextArea\n"); 
			}
		});
		btn.setBounds(26, 16, 117, 29);
		contentPane.add(btn);
		
		scrollPane = new JScrollPane();
		scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
		scrollPane.setBounds(36, 57, 262, 223);
		contentPane.add(scrollPane);
		
		textArea = new JTextArea();
		scrollPane.setViewportView(textArea);
		textArea.setEditable(false);
	}
}

스크롤 만들기
Surround with - javax.swing.JScrollPane

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class JTextAreaEx02 extends JFrame {

	private JPanel contentPane;
	private JTextField tf1;
	private JTextField tf2;
	private JTextArea textArea;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JTextAreaEx02 frame = new JTextAreaEx02();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JTextAreaEx02() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lbl1 = new JLabel("시작단");
		lbl1.setBounds(6, 6, 44, 24);
		contentPane.add(lbl1);
		
		tf1 = new JTextField();
		tf1.setBounds(64, 5, 260, 26);
		contentPane.add(tf1);
		tf1.setColumns(10);
		
		JLabel lbl2 = new JLabel("끝단");
		lbl2.setBounds(6, 40, 61, 16);
		contentPane.add(lbl2);
		
		tf2 = new JTextField();
		tf2.setBounds(64, 35, 260, 24);
		contentPane.add(tf2);
		tf2.setColumns(10);
		
		JButton btn = new JButton("구구단");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//값에 입력검사
				int startDan = Integer.parseInt(tf1.getText());
				int endDan = Integer.parseInt(tf2.getText());
				
				//System.out.println(startDan);
				//System.out.println(endDan);
				
				System.out.println(doGugudan(startDan, endDan));
			}
		});
		btn.setBounds(375, 6, 103, 24);
		contentPane.add(btn);
		
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(16, 68, 611, 456);
		contentPane.add(scrollPane);
		
		textArea = new JTextArea();
		textArea.setEditable(false);
		scrollPane.setViewportView(textArea);
	
	}
	public String doGugudan(int stratDan, int endDan) {
		String result = "";
		for(int i=stratDan; i<=endDan; i++) {
			for(int j=1; j<=9 ;j++) {
				result += i + "X" + j + "=" +(i*j) + "\t";
			}
			result += "\n";
		}
		return result;
	}
	

}

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.border.EmptyBorder;

public class JEditorPainEx01 extends JFrame {

	private JPanel contentPane;
	private JEditorPane editorPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JEditorPainEx01 frame = new JEditorPainEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JEditorPainEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(23, 105, 510, 187);
		contentPane.add(scrollPane);
		
		editorPane = new JEditorPane();
		scrollPane.setViewportView(editorPane);
		
		JButton btnNewButton = new JButton("New button");
		btnNewButton.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
			//JTestArea
				//editorPane.setText("Hello JeditorPane")
				//html형식으로 보여
				editorPane.setContentType("text/html");
				//editorPane.setText("<html><body>Hello<br/><font color='blue'>JEditorPane</font></body></html>");
				editorPane.setText("<html><body>Hello<br/><font color='blue'>JEditorPane</font><br /><table border ='1'><tr><td>1</td><<td>1</td><<td>1</td></tr></table></body></html>");
			}
			
		});
		btnNewButton.setBounds(23, 41, 510, 29);
		contentPane.add(btnNewButton);
	}
	
}

html 형식으로 보여줌
editorPane - contentType - text/plain->text/html
테이블 입력도 가능

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class JEditorPainEx02 extends JFrame {

	private JPanel contentPane;
	private JTextField tf1;
	private JTextField tf2;
	private JEditorPane editorPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JEditorPainEx02 frame = new JEditorPainEx02();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JEditorPainEx02() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JLabel lbl1 = new JLabel("시작단");
		lbl1.setBounds(6, 6, 44, 24);
		contentPane.add(lbl1);
		
		tf1 = new JTextField();
		tf1.setBounds(64, 5, 260, 26);
		contentPane.add(tf1);
		tf1.setColumns(10);
		
		JLabel lbl2 = new JLabel("끝단");
		lbl2.setBounds(6, 40, 61, 16);
		contentPane.add(lbl2);
		
		tf2 = new JTextField();
		tf2.setBounds(64, 35, 260, 24);
		contentPane.add(tf2);
		tf2.setColumns(10);
		
		JButton btn = new JButton("구구단");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//값에 입력검사
				int startDan = Integer.parseInt(tf1.getText());
				int endDan = Integer.parseInt(tf2.getText());
				
				//System.out.println(startDan);
				//System.out.println(endDan);
				
				//System.out.println(doGugudan(startDan, endDan));
				
				editorPane.setText(doGugudan(startDan, endDan));
			}
		});
		btn.setBounds(375, 6, 103, 24);
		contentPane.add(btn);
		
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(35, 94, 493, 374);
		contentPane.add(scrollPane);
		
		editorPane = new JEditorPane();
		editorPane.setEditable(false);
		editorPane.setContentType("text/html");
		scrollPane.setViewportView(editorPane);
	
	}
	public String doGugudan(int stratDan, int endDan) {
		String result = "<table border ='1' width='600' cellspacing='0'>";
		for(int i=stratDan; i<=endDan; i++) {
			result += "<tr>"; 
			for(int j=1; j<=9 ;j++) {
				result += i + "X" + j + "=" +(i*j) + "</td>";
			}
			result += "</tr>";
		}
		result += "</table>";
		return result;
	}
	

}

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

public class JOptionPaneEx01 extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JOptionPaneEx01 frame = new JOptionPaneEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JOptionPaneEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JButton btn1 = new JButton("메세지 다이얼로그");
		btn1.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//JOptionPane.showMessageDialog(JOptionPaneEx01.this, "메세지"); //경고창 static 메서
				JOptionPane.showMessageDialog(JOptionPaneEx01.this, "메세지","타이틀", JOptionPane.WARNING_MESSAGE); 
			}
		});
		btn1.setBounds(31, 19, 157, 29);
		contentPane.add(btn1);
		
		JButton btn2 = new JButton("컴펌 다이얼로그");
		btn2.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//JOptionPane.showConfirmDialog(JOptionPaneEx01.this, "메세지");
				int result = JOptionPane.showConfirmDialog(JOptionPaneEx01.this, "메세지","타이",JOptionPane.OK_CANCEL_OPTION);
				//JOptionPane.showConfirmDialog(JOptionPaneEx01.this, "메세지","타이",JOptionPane.YES_NO_OPTION);
				
				if(result == JOptionPane.OK_OPTION ) {
					System.out.println("OK 클릭");
				}else if(result == JOptionPane.CANCEL_OPTION) {
					System.out.println("Cancel 클릭");
				}else {
					System.out.println("기타 옵션");
				}
			}
		});
		btn2.setBounds(31, 58, 157, 29);
		contentPane.add(btn2);
		
		JButton btn3 = new JButton("입력 다이얼로그");
		btn3.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				//JOptionPane.showInputDialog("메세지");
				String msg = JOptionPane.showInputDialog("메시지","내용");
				
				if(msg != null) {
					System.out.println("확인 클릭");
				}else {
					System.out.println("기타 클릭");
				}
			}
		});
		btn3.setBounds(31, 99, 157, 29);
		contentPane.add(btn3);
	}

}

주의표시

확인, 취소, 닫기 별 입력값도 함께 받음

입력내용 받음

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.EmptyBorder;

public class JRadioButtonEx01 extends JFrame {

	private JPanel contentPane;
	private final ButtonGroup buttonGroup = new ButtonGroup();

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JRadioButtonEx01 frame = new JRadioButtonEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JRadioButtonEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JRadioButton rdbtn1 = new JRadioButton("사과");
		buttonGroup.add(rdbtn1);
		rdbtn1.setBounds(20, 6, 141, 23);
		contentPane.add(rdbtn1);
		
		JRadioButton rdbtn2 = new JRadioButton("딸기");
		buttonGroup.add(rdbtn2);
		rdbtn2.setBounds(20, 41, 141, 23);
		contentPane.add(rdbtn2);
		
		JRadioButton rdbtn3 = new JRadioButton("수박");
		buttonGroup.add(rdbtn3);
		rdbtn3.setBounds(20, 76, 141, 23);
		contentPane.add(rdbtn3);
		
		JButton btnNewButton = new JButton("New button");
		btnNewButton.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				
				String result = "";
				if(rdbtn1.isSelected()) {
				result = rdbtn1.getText();
			}else if(rdbtn2.isSelected()){
				result = rdbtn2.getText();
			}else if(rdbtn3.isSelected()){
				result = rdbtn3.getText();
			}
				System.out.println(result);
			}
		});
		btnNewButton.setBounds(6, 110, 117, 29);
		contentPane.add(btnNewButton);
	}
}

단일선택
라디오 버튼 전체 선택 - 우클릭 - set ButtonGroup - New standard -버튼 항목별 selected(false)

---

import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

public class JCheckboxEx01 extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JCheckboxEx01 frame = new JCheckboxEx01();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JCheckboxEx01() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JCheckBox ch1 = new JCheckBox("사과");
		ch1.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				System.out.println("체크박스 클릭");
			}
		});
		ch1.setSelected(true);
		ch1.setBounds(27, 6, 128, 23);
		contentPane.add(ch1);
		
		JCheckBox ch2 = new JCheckBox("참외");
		ch2.setBounds(27, 30, 128, 23);
		contentPane.add(ch2);
		
		JCheckBox ch3 = new JCheckBox("수박");
		ch3.setBounds(27, 54, 128, 23);
		contentPane.add(ch3);
		
		JButton btn = new JButton("New button");
		btn.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				/* System.out.println(ch1.isSelected());
				System.out.println(ch2.isSelected());
				System.out.println(ch3.isSelected());
				
				System.out.println(ch1.getText());
				System.out.println(ch2.getText());
				System.out.println(ch3.getText()); */
				
				String result = "";
				if(ch1.isSelected() ) {
					result += ch1.getText() + " ";
				}
				if(ch2.isSelected() ) {
					result += ch2.getText() + " ";
				}
				if(ch3.isSelected() ) {
					result += ch3.getText() + " ";
				}
				System.out.println(result);
			}
		});
		btn.setBounds(27, 89, 117, 29);
		contentPane.add(btn);
		
		JButton btn2 = new JButton("전체선택");
		btn2.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				if(btn2.getText().equals("전체선택")) {
					ch1.setSelected(true);
					ch2.setSelected(true);
					ch3.setSelected(true);
					
					btn2.setText("전체해제");
				}else{
					ch1.setSelected(false);
					ch2.setSelected(false);
					ch3.setSelected(false);
					
					btn2.setText("전체선택");
				}
			}
		});
		btn2.setBounds(27, 130, 117, 29);
		contentPane.add(btn2);
	}
}