2023-12-31

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame{

Main(){

Container cp=getContentPane();

cp.setLayout(new BorderLayout());

setVisible(true);

setSize(400,400);

JPanel nor=new JPanel();

nor.setSize(400,200);

cp.add(nor,BorderLayout.NORTH);

nor.setBackground(Color.DARK_GRAY);

JPanel cen=new JPanel();

cen.setSize(400,200);

JButton b1=new JButton();

nor.add(b1);

b1.setSize(100,100);

JButton b2=new JButton();

nor.add(b2);

b2.setSize(100,100);

JButton b3=new JButton();

nor.add(b3);

b3.setSize(100,100);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame{

Main(){

Container cp=getContentPane();

cp.setLayout(new BorderLayout());

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

setSize(400,400);

JPanel north=new JPanel(new FlowLayout());

JPanel center=new JPanel(new FlowLayout());

cp.add(north,BorderLayout.NORTH);

north.setBackground(Color.DARK_GRAY);

cp.add(center,BorderLayout.CENTER);

JButton b1=new JButton("1");

north.add(b1);

JButton b2=new JButton("2");

north.add(b2);

JButton b3=new JButton("3");

north.add(b3);

b1.setSize(100,200);

JLabel l1=new JLabel("1");

JLabel l2=new JLabel("2");

JLabel l3=new JLabel("3");

center.add(l1);

center.add(l2);

center.add(l3);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame {

Main() {

Container cp = getContentPane();

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

setSize(300, 300);

cp.setLayout(null);

JLabel[] labels = new JLabel[20];

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

labels[i] = new JLabel(Integer.toBinaryString(i));

int x = (int) (Math.random() * 200 + 50);

int y = (int) (Math.random() * 200 + 50);

labels[i].setLocation(x, y);

labels[i].setSize(15, 15);

labels[i].setOpaque(true);

labels[i].setBackground(Color.blue);

cp.add(labels[i]);

}

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame{

Main(){

Container cp=getContentPane();

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

cp.setLayout(new BorderLayout());

JPanel north = new JPanel();

cp.add(north,BorderLayout.NORTH);

north.setBackground(Color.gray);

JLabel input = new JLabel("수식입력");

north.add(input);

JTextField t1=new JTextField();

t1.setColumns(20);

north.add(t1);

JPanel center = new JPanel();

center.setLayout(new GridLayout(4,4,2,2));

cp.add(center,BorderLayout.CENTER);

JButton[] btns = new JButton[10];

for(int i=0;i<10;i++) {

btns[i]=new JButton(Integer.toString(i));

center.add(btns[i]);

}

JButton CE=new JButton("CE");

center.add(CE);

JButton cal=new JButton("계산");

center.add(cal);

JButton sum=new JButton("+");

center.add(sum);

sum.setBackground(Color.cyan);

JButton m=new JButton("-");

center.add(m);

m.setBackground(Color.cyan);

JButton a=new JButton("x");

center.add(a);

a.setBackground(Color.cyan);

JButton d=new JButton("/");

center.add(d);

d.setBackground(Color.cyan);

JPanel south=new JPanel();

cp.add(south,BorderLayout.SOUTH);

south.setBackground(Color.yellow);

JLabel output = new JLabel("계산결과");

south.add(output);

JTextField t2=new JTextField();

t2.setColumns(20);

south.add(t2);

setVisible(true);

setSize(300,300);

}

public static void main(String[] args) {

new Main();

}

}

리스너 :

액션 (텍스트필드, 버튼)

change (슬라이더..?)

Item (체크박스, 라디오버튼... )

마우스리스너

키리스너

*/

/*

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Main extends JFrame {

Container cp = getContentPane();

JPanel north = new JPanel();

JPanel center = new JPanel(null);

JPanel south = new JPanel();

JButton word = new JButton("Word Input");

JTextField input = new JTextField();

Main() {

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

cp.setLayout(new BorderLayout());

cp.add(center, BorderLayout.CENTER);

north.setLayout(new FlowLayout());

north.setBackground(Color.DARK_GRAY);

cp.add(north, BorderLayout.NORTH);

JButton b1 = new JButton("추가");

JButton b2 = new JButton("초기화");

JButton b3 = new JButton("나가기");

north.add(b1);

b1.addActionListener(new Plus());

north.add(b2);

b2.addActionListener(new Init());

north.add(b3);

b3.addActionListener(new Exit());

// * b3.addActionListener(new ActionListener() { public void

// * actionPerformed(ActionEvent e) { cp.removeAll(); // 컨테이너 내부의 모든 컴포넌트 삭제

// * cp.repaint(); cp.revalidate(); //System.exit(0); } });

// *

// * // b1.addActionListener(new MyActionListener()); // b2.addActionListener(new

// * MyActionListener()); // b3.addActionListener(new MyActionListener());

// *

south.setLayout(new FlowLayout());

south.setBackground(Color.yellow);

cp.add(south, BorderLayout.SOUTH);

input.setColumns(20);

word.addActionListener(new Input());

south.add(word);

south.add(input);

JLabel[] labels = new JLabel[10];

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

labels[i] = new JLabel("*");

int x = (int) (Math.random() * 300) + 50;

int y = (int) (Math.random() * 300) + 50;

labels[i].setLocation(x, y);

labels[i].setSize(10, 10);

center.add(labels[i]);

}

setVisible(true);

setSize(500, 500);

}

class Plus implements ActionListener {

@Override

public void actionPerformed(ActionEvent e) {

JLabel exlabels = new JLabel("*");

int x = (int) (Math.random() * 300) + 50;

int y = (int) (Math.random() * 300) + 50;

exlabels.setLocation(x, y);

exlabels.setSize(10, 10);

center.add(exlabels);

center.repaint();

center.revalidate();

}

}

class Init implements ActionListener {

@Override

public void actionPerformed(ActionEvent e) {

center.removeAll(); // 컨테이너 내부의 모든 컴포넌트 삭제

center.repaint();

center.revalidate();

}

}

class Exit implements ActionListener {

@Override

public void actionPerformed(ActionEvent e) {

System.exit(0);

}

}

class Input implements ActionListener {

@Override

public void actionPerformed(ActionEvent e) {

JLabel exinput = new JLabel(input.getText());

input.setText("");

int x = (int) (Math.random() * 300) + 50;

int y = (int) (Math.random() * 300) + 50;

exinput.setLocation(x, y);

exinput.setSize(30, 30);

center.add(exinput);

center.repaint();

center.revalidate();

}

}

// class MyActionListener implements ActionListener{

// public void actionPerformed(ActionEvent e) {

// JButton bb = (JButton)e.getSource();

// if(bb.getText().equals("나가기"))

// //if(bb==b3)

// bb.setBackground(Color.red);

// //bb.setText("push");

//

// }

// }

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

class Main extends JFrame{

JLabel l=new JLabel("Hello");

Container cp= getContentPane();

Main(){

cp.setLayout(null);

l.setLocation(30,30);

l.setSize(30,30);

cp.add(l);

cp.addMouseListener(new MyMouseListener1());

setVisible(true);

setSize(300,300);

if(==KeyEvent.VK_UP)

}

class MyMouseListener1 extends MouseAdapter{

public void mousePressed(MouseEvent e) {

l.setText("adapter");

}

}

class MyMouseListener implements MouseListener{

@Override

public void mouseClicked(MouseEvent e) {

if(e.getClickCount()==2)

l.setText("text");

}

@Override

public void mousePressed(MouseEvent e) {

//e객체에는 방금 발생한 이벤트에대한 많은 정보 포함 ( ex) 눌린 곳이 어딘지? 어떤 컴포넌트에서 눌렸는지? 언제 눌렸는지? ..e 왼쪽이눌렸는지?오른쪽이눌렸는지?

e.getk

int x = e.getX();

int y = e.getY();

l.setLocation(x, y);

}

@Override

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseEntered(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mouseExited(MouseEvent e) {

cp.setBackground(Color.DARK_GRAY);

}

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Main extends JFrame {

Container cp=getContentPane();

JLabel label=new JLabel("사랑해");

Main(){

cp.setLayout(new FlowLayout());

cp.add(label);

label.addMouseListener(new Mouse());

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

setSize(300,300);

}

class Mouse implements MouseListener {

@Override

public void mouseClicked(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mousePressed(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseEntered(MouseEvent e) {

label.setText("Love Java");

}

@Override

public void mouseExited(MouseEvent e) {

label.setText("사랑해");

}

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Main extends JFrame{

Container cp=getContentPane();

Main(){

cp.setBackground(Color.green);

cp.addMouseMotionListener(new Mouse());

setVisible(true);

setSize(300,300);

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

class Mouse implements MouseMotionListener, MouseListener{

@Override

public void mouseDragged(MouseEvent e) {

cp.setBackground(Color.yellow);

}

@Override

public void mouseMoved(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mouseClicked(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mousePressed(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mouseReleased(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mouseEntered(MouseEvent e) {

cp.setBackground(Color.green);

}

@Override

public void mouseExited(MouseEvent e) {

cp.setBackground(Color.green);

}

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Main extends JFrame{

JLabel label=new JLabel("C");

Main(){

Container cp=getContentPane();

cp.setLayout(null);

label.setSize(10,10);

label.setLocation(100,100);

label.addMouseListener(new Mouse());

cp.add(label);

setSize(300,300);

setVisible(true);

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

class Mouse implements MouseListener{

@Override

public void mouseClicked(MouseEvent e) {

int x=(int)(Math.random()*200)+50;

int y=(int)(Math.random()*200)+50;

label.setLocation(x,y);

}

@Override

public void mousePressed(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseEntered(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mouseExited(MouseEvent e) {

// TODO Auto-generated method stub

}

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class Main extends JFrame{

JLabel lable=new JLabel("Love Java");

Main(){

Container cp=getContentPane();

cp.setLayout(new FlowLayout());

cp.add(lable);

lable.addMouseWheelListener(new Mouse());

setSize(300,300);

setDefaultCloseOperation(EXIT_ON_CLOSE);

setVisible(true);

}

class Mouse implements MouseWheelListener{

@Override

public void mouseWheelMoved(MouseWheelEvent e) {

int n=e.getWheelRotation();

Font f = lable.getFont();

int size = f.getSize();

if(n<0) {

lable.setFont(new Font("Arial",Font.PLAIN,size+5));

}

else if(size>=10) {

lable.setFont(new Font("Arial",Font.PLAIN,size-5));

}

System.out.println(lable.getFont().getSize());

}

}

public static void main(String[] args) {

new Main();

}

}

*/

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.GroupLayout.Alignment;

class Main extends JFrame{

JLabel l1=new JLabel("1");

JLabel l2=new JLabel("2");

JLabel l3=new JLabel("3");

JLabel underl=new JLabel("시작합니다");

Main(){

Container cp=getContentPane();

cp.setLayout(null);

l1.setOpaque(true);

l2.setOpaque(true);

l3.setOpaque(true);

l1.setBackground(Color.green);

l2.setBackground(Color.green);

l3.setBackground(Color.green);

underl.setLocation(160,90);

underl.setSize(100,30);

l1.setSize(70,40);

l1.setLocation(50,30);

l1.setHorizontalAlignment(SwingConstants.CENTER);

l2.setSize(70,40);

l2.setLocation(150,30);

l2.setHorizontalAlignment(SwingConstants.CENTER);

l3.setSize(70,40);

l3.setLocation(250,30);

l3.setHorizontalAlignment(SwingConstants.CENTER);

cp.add(underl);

cp.add(l1);

cp.add(l2);

cp.add(l3);

setSize(400,300);

setDefaultCloseOperation(EXIT_ON_CLOSE);

setVisible(true);

}

class key implements KeyListener{

@Override

public void keyTyped(KeyEvent e) {

// TODO Auto-generated method stub

}

@Override

public void keyPressed(KeyEvent e) {

// TODO Auto-generated method stub

}

@Override

public void keyReleased(KeyEvent e) {

// TODO Auto-generated method stub

}

}

public static void main(String[] args) {

new Main();

}

}