2022-08-28

/*

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("텍스트 필드 만들기 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

c.add(new JLabel("이름 "));

c.add(new JTextField(20));

c.add(new JLabel("학과 "));

c.add(new JTextField("컴퓨터공학과", 20));

c.add(new JLabel("주소 "));

c.add(new JTextField("서울시 ...", 20));

setSize(300,150);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}*/

/*

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class Main extends JFrame {

private JTextField tf = new JTextField(20);

private JTextArea ta = new JTextArea(7,20);

public Main() {

setTitle("텍스트 영역 만들기 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

c.add(new JLabel("입력후 <Enter> 키를 입력하세요"));

c.add(tf);

c.add(new JScrollPane(ta));

tf.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JTextField t = (JTextField)e.getSource();

ta.append (t.getText() + "\n" );

t.setText("");

}

});

setSize(300,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}*/

/*

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class Main extends JFrame {

private String [] fruits = {"apple", "banana", "kiwi", "mango", "pear", "peach", "berry", "strawbarry", "blackberry"};

private ImageIcon [] images = {new ImageIcon("images/icon1.png"),

new ImageIcon("images/icon2.png"),

new ImageIcon("images/icon3.png"),

new ImageIcon("images/icon4.png")

};

public Main() {

setTitle("리스트 만들기 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

JList<String> strList = new JList<String>(fruits);

c.add(strList);

JList<ImageIcon> imageList = new JList<ImageIcon>();

imageList.setListData(images);

c.add(imageList);

JList<String> scrollList = new JList<String>(fruits);

c.add(new JScrollPane(scrollList));

setSize(300,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class Main extends JFrame {

private String [] fruits = {"apple", "banana", "kiwi", "mango"};

private ImageIcon [] images = {new ImageIcon("images/apple.jpg"),

new ImageIcon("images/banana.jpg"),

new ImageIcon("images/kiwi.jpg"),

new ImageIcon("images/mango.jpg")};

private JLabel imgLabel = new JLabel(images[0]);

private JComboBox<String> strCombo = new JComboBox<String>(fruits);

public Main() {

setTitle("콤보박스 활용 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

c.add(strCombo);

c.add(imgLabel);

strCombo.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

JComboBox<String> cb = (JComboBox<String>)e.getSource();

int index = cb.getSelectedIndex();

imgLabel.setIcon(images[index]);

}

});

setSize(300,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

c 콘솔 text로 사용자와 computer가 소통 command user interface

gui graphical user interface -> event 처리 ... 게임

*/

/*

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("슬라이더 만들기 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 150, 0);

slider.setPaintLabels(true);

slider.setPaintTicks(true);

slider.setPaintTrack(true);

slider.setMajorTickSpacing(50);

slider.setMinorTickSpacing(10);

c.add(slider);

setSize(300,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

import javax.swing.*;

import javax.swing.event.ChangeListener;

import java.awt.event.*;

import java.awt.*;

public class Main extends JFrame {

private JLabel colorLabel;

private JSlider [] sl = new JSlider [3];

public Main() {

setTitle("슬라이더와 ChangeEvent 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new FlowLayout());

colorLabel = new JLabel(" SLIDER EXAMPLE ");

for(int i=0; i<sl.length; i++)

{

sl[i] = new JSlider(JSlider.HORIZONTAL, 0, 255, 128);

sl[i].setPaintLabels(true);

sl[i].setPaintTicks(true);

sl[i].setPaintTrack(true);

sl[i].setMajorTickSpacing(50);

sl[i].setMinorTickSpacing(10);

sl[i].addChangeListener(new MyChangeListener());

c.add(sl[i]);

}

sl[0].setForeground(Color.RED);

sl[1].setForeground(Color.GREEN);

sl[2].setForeground(Color.BLUE);

int r = sl[0].getValue();

int g = sl[1].getValue();

int b = sl[2].getValue();

colorLabel.setOpaque(true);

colorLabel.setBackground(new Color(r, g, b));

}

class MyChangeListener implements ChangeListener {

public void stateChanged(ChangeEvent e) {

int r = sl[0].getValue();

}

}

public static void main(String[] args) {

new Main();

}

}