Java 2022-10-08, 09.GUI, Eclipse

*/

//9.GUI/실습/01

/*

import java.awt.*;

import javax.swing.*;

public class Main extends JFrame {

public Main(){

setTitle("Let's study Java");

setSize(400, 200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/02

/*

import java.awt.*;

import javax.swing.*;

public class Main extends JFrame{

public Main() {

setTitle("BorderLayout Particle");

setSize(400,200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new BorderLayout(5, 7));

cnt.add(new JButton("Center"), BorderLayout.CENTER);

cnt.add(new JButton("West"), BorderLayout.WEST);

cnt.add(new JButton("East"), BorderLayout.EAST);

cnt.add(new JButton("North"), BorderLayout.NORTH);

cnt.add(new JButton("South"), BorderLayout.SOUTH);

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/03

/*

import java.awt.*;

import javax.swing.*;

public class Main extends JFrame {

public Main() {

setTitle("Ten Color Buttons Frame");

setSize(550,200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new GridLayout());

for(int i = 0; i <= 9; i++) {

cnt.add(new JButton(Integer.toString(i)));

}

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/04

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame {

Color c[] = {Color.red, Color.orange, Color.yellow, Color.green, Color.cyan, Color.blue, Color.magenta, Color.darkGray, Color.pink, Color.gray};

public Main() {

setTitle("Ten color Buttons Frame");

setSize(550, 200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new GridLayout());

for(int i = 0; i <= 9; i++) {

JButton b = new JButton(Integer.toString(i));

b.setBackground(c[i]);

cnt.add(b);

}

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/05

/*

import java.awt.*;

import javax.swing.*;

class Main extends JFrame {

Color clr[] = {Color.red, Color.orange, Color.yellow, Color.green,

Color.cyan, Color.blue, Color.magenta, Color.gray,

Color.pink, Color.gray, Color.white, Color.darkGray,

Color.black, Color.orange,Color.blue,Color.magenta};

public Main() {

setTitle("4x4 Color Frame");

setSize(550, 200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new GridLayout(4,4,0,0));

for(int i = 0; i <= 15; i++) {

JLabel lbl = new JLabel(Integer.toString(i));

lbl.setBackground(clr[i]);

lbl.setOpaque(true);

cnt.add(lbl);

}

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/06

/*

import java.awt.*;

import javax.swing.*;

public class Main extends JFrame {

public Main() {

setTitle("Random Labels");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setLayout(null);

for(int i = 0; i < 20; i++) {

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

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

JLabel label = new JLabel(Integer.toString(i));

label.setLocation(x, y);

label.setSize(10, 10);

label.setOpaque(true);

label.setBackground(Color.blue);

add(label);

}

setSize(300, 300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

//9.GUI/실습/07

import java.awt.*;

import javax.swing.*;

class Main extends JFrame {

String text[] = {"0", "1", "2", "3",

"4", "5", "6", "7",

"8", "9", "CE", "계산",

"+", "-", "x", "/"};

public Main() {

setTitle("계산기 프레임");

setSize(300,250);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new BorderLayout());

JPanel pnl1 = new JPanel();

pnl1.setBackground(Color.gray);

pnl1.setLayout(new FlowLayout());

pnl1.add(new JLabel(" 수식입력"));

pnl1.add(new JTextField(" "));

JPanel pnl2 = new JPanel();

pnl2.setBackground(Color.white);

pnl2.setLayout(new GridLayout(4,4,5,5));

for(int i = 0; i < 16; i++) {

JButton btn = new JButton(text[i]);

if(i > 11) {

btn.setBackground(Color.cyan);

}

pnl2.add(btn);

}

JPanel pnl3 = new JPanel();

pnl3.setBackground(Color.yellow);

pnl3.setLayout(new FlowLayout(FlowLayout.LEFT,0,0));

pnl3.add(new JLabel(" 계산 결과"));

pnl3.add(new JTextField(" "));

cnt.add(pnl1, BorderLayout.NORTH);

cnt.add(pnl2, BorderLayout.CENTER);

cnt.add(pnl3, BorderLayout.SOUTH);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

//9.GUI/실습/08

/*

import java.util.*;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import javax.swing.event.*;

class Main extends JFrame {

String word1[] = {"열기", "닫기", "나가기"};

JPanel pnl2 = new JPanel();

public Main() {

setTitle("여러 개의 패널을 가진 프레임");

setSize(300, 250);

//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container cnt = getContentPane();

cnt.setLayout(new BorderLayout());

JPanel pnl1 = new JPanel();

pnl1.setBackground(Color.gray);

pnl1.setLayout(new FlowLayout());

for(int i = 0; i < 3; i++) {

pnl1.add(new JButton(word1[i]));

}

JButton button1 = new JButton("mouseEvent");

pnl1.add(button1);

button1.addMouseListener(new MouseListener() {

@Override

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

}

@Override

public void mousePressed(MouseEvent e) {

pnl1.removeAll();

pnl1.repaint();

}

@Override

public void mouseExited(MouseEvent e) {

button1.setBackground(Color.gray);

}

@Override

public void mouseEntered(MouseEvent e) {

button1.setBackground(Color.red);

}

@Override

public void mouseClicked(MouseEvent e) {

// TODO Auto-generated method stub

}

});

pnl2.setBackground(Color.white);

pnl2.setLayout(null);

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

JLabel lbl = new JLabel("*");

int x = (int)(Math.random()*250);

int y = (int)(Math.random()*100)+30;

lbl.setLocation(x, y);

lbl.setSize(10,10);

lbl.setForeground(Color.red);

lbl.setOpaque(true);

pnl2.add(lbl);

}

JPanel pnl3 = new JPanel();

pnl3.setBackground(Color.yellow);

pnl3.setLayout(new FlowLayout(FlowLayout.LEFT,3,0));

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

button.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

pnl2.removeAll();

pnl2.repaint();

}

});

pnl3.add(button);

JTextField tf = new JTextField(" ");

tf.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

JLabel lbl = new JLabel(tf.getText());

int x = (int)(Math.random()*250);

int y = (int)(Math.random()*100)+30;

lbl.setLocation(x, y);

lbl.setSize(50,10);

lbl.setForeground(Color.green);

lbl.setOpaque(true);

pnl2.add(lbl);

pnl2.repaint();

tf.setText("");

}

});

pnl3.add(tf);

cnt.add(pnl1 ,BorderLayout.NORTH);

cnt.add(pnl2 ,BorderLayout.CENTER);

cnt.add(pnl3 ,BorderLayout.SOUTH);

setVisible(true);

}

// class MyActionListener implements ActionListener{

//

// public void actionPerformed(ActionEvent e) {

// JLabel lbl = new JLabel("*");

// int x = (int)(Math.random()*250);

// int y = (int)(Math.random()*100)+30;

// lbl.setLocation(x, y);

// lbl.setSize(10,10);

// lbl.setForeground(Color.red);

// lbl.setOpaque(true);

// pnl2.add(lbl);

//

// //pnl2.revalidate();

// pnl2.repaint();

// }

//

// }

public static void main(String[] args) {

new Main();

}

}

*/

/*

import java.awt.*;

import javax.swing.*;

class NorthPanel extends JPanel{

String[] word1 = {"Open", "Read", "Close"};

public NorthPanel() {

setBackground(Color.darkGray);

setLayout(new FlowLayout(FlowLayout.CENTER,10,0));

for(int i = 0; i < 3; i++) {

add(new JButton(word1[i]));

}

}

}

class CenterPanel extends JPanel {

String[] word2 = {"Hello", "Java", "Love"};

public CenterPanel() {

setBackground(Color.gray);

setLayout(null);

for(int i = 0; i < 3; i++) {

JLabel lbl = new JLabel(word2[i]);

int x = (int)(Math.random()*250);

int y = (int)(Math.random()*250)+30;

lbl.setLocation(x, y);

lbl.setSize(30,30);

lbl.setForeground(Color.black);

lbl.setBackground(Color.gray);

lbl.setOpaque(true);

add(lbl);

}

}

}

class Main extends JFrame {

Main(){

setTitle("Open Challenge 9");

setSize(400, 400);

setLayout(new BorderLayout());

add(new NorthPanel(),BorderLayout.NORTH);

add(new CenterPanel(), BorderLayout.CENTER);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

import java.awt.*;

import javax.swing.*;

class Main extends JFrame {

public Main() {

setTitle("Action 이벤트 리스너 예제");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setSize(350,150);

Container cnt = getContentPane();

cnt.set

JButton btn = new JButton();

add(btn);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}