220108

/*import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("Let's study Java");

setSize(400, 200);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("BorderLayout");

setSize(400, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

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

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

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

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

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

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

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

import javax.swing.*;

import java.awt.*;

class myJButton extends JButton{

myJButton(String label, Color c)

{

super(label);

setBackground(c);

}

}

public class Main extends JFrame {

public Main() {

setTitle("Ten Color Buttons Frame");

setVisible(true);

setSize(600, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

GridLayout grid = new GridLayout(1, 10);

c.setLayout(grid);

c.add(new myJButton("0",Color.red));

c.add(new myJButton("1",Color.orange));

c.add(new myJButton("2", Color.yellow));

c.add(new myJButton("3", Color.green));

c.add(new myJButton("4", Color.cyan));

c.add(new myJButton("5", Color.BLUE));

c.add(new myJButton("6", Color.magenta));

c.add(new myJButton("7", Color.DARK_GRAY));

c.add(new myJButton("8", Color.pink));

c.add(new myJButton("9", Color.gray));

}

public static void main(String[] args) {

new Main();

}

}

import javax.swing.*;

import java.awt.*;

class myJButton extends JButton {

myJButton(String Label, Color c) {

super(Label);

setBackground(c);

}

}

public class Main extends JFrame {

public Main() {

setTitle("4X4 Color Frame");

setVisible(true);

setSize(800, 400);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

GridLayout grid = new GridLayout(4, 4);

c.setLayout(grid);

c.add(new myJButton("0", Color.red));

c.add(new myJButton("1", Color.orange));

c.add(new myJButton("2", Color.yellow));

c.add(new myJButton("3", Color.green));

c.add(new myJButton("4", Color.cyan));

c.add(new myJButton("5", Color.blue));

c.add(new myJButton("6", Color.magenta));

c.add(new myJButton("7", Color.gray));

c.add(new myJButton("8", Color.pink));

c.add(new myJButton("9", Color.LIGHT_GRAY));

c.add(new myJButton("10", Color.white));

c.add(new myJButton("11", Color.DARK_GRAY));

c.add(new myJButton("12", Color.black));

c.add(new myJButton("13", Color.orange));

c.add(new myJButton("14", Color.blue));

c.add(new myJButton("15", Color.magenta));

}

public static void main(String[] args) {

new Main();

}

}

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("Random Labels");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(null);

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

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

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

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

la.setLocation(x, y);

la.setSize(10, 10);

la.setBackground(Color.blue);

c.add(la);

la.setOpaque(true);

}

setVisible(true);

setSize(300, 300);

}

public static void main(String[] args) {

new Main();

}

}

import javax.swing.*;

import java.awt.*;

class myJButton extends JButton {

myJButton(String Label, Color c) {

super(Label);

setBackground(c);

}

myJButton(String Label) {

super(Label);

}

}

public class Main extends JFrame {

public Main() {

setTitle("계산기 프레임");

setSize(400, 400);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container d = getContentPane();

Panel a = new Panel();

Panel b = new Panel();

GridLayout grid = new GridLayout(4, 4);

b.setLayout(grid);

Panel c = new Panel();

d.setLayout(new BorderLayout());

a.add(new JLabel("수식입력"));

a.add(new JTextField(20));

d.add(a, BorderLayout.NORTH);

b.add(new myJButton("0"));

b.add(new myJButton("1"));

b.add(new myJButton("2"));

b.add(new myJButton("3"));

b.add(new myJButton("4"));

b.add(new myJButton("5"));

b.add(new myJButton("6"));

b.add(new myJButton("7"));

b.add(new myJButton("8"));

b.add(new myJButton("9"));

b.add(new myJButton("CE"));

b.add(new myJButton("계산"));

b.add(new myJButton("+", Color.cyan));

b.add(new myJButton("-", Color.cyan));

b.add(new myJButton("x", Color.cyan));

b.add(new myJButton("/", Color.cyan));

d.add(b, BorderLayout.CENTER);

c.add(new JLabel("계산결과"));

c.add(new JTextField(20));

d.add(c, BorderLayout.SOUTH);

a.setBackground(Color.gray);

c.setBackground(Color.yellow);

}

public static void main(String[] args) {

new Main();

}

}*/

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("여러 개의 패널을 가진 프레임");

setSize(700, 700);

setVisible(true);

Container d = getContentPane();

Panel a = new Panel();

//a.setLayout(new FlowLayout());

Panel c = new Panel();

//c.setLayout(new FlowLayout());

d.setLayout(new BorderLayout());

a.add(new JButton("열기"));

a.add(new JButton("닫기"));

a.add(new JButton("나가기"));

a.setBackground(Color.gray);

d.add(a, BorderLayout.NORTH);

Panel b = new Panel();

d.add(b, BorderLayout.CENTER);

b.setBackground(Color.white);

b.setLayout(null);

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

int x = (int)(Math.random()*700 + 0);

int y = (int)(Math.random()*700 + 0);

JLabel la = new JLabel("*");

la.setLocation(x, y);

la.setSize(10, 10);

b.add(la);

la.setOpaque(true);

}

c.add(new JButton("Word Input"));

c.add(new JTextField(20));

d.add(c, BorderLayout.SOUTH);

}

public static void main(String[] args) {

new Main();

}

}