230326

/*

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

final int SIZE = 10;

final int M_SEC = 1000; // MILLI- SECONDS

setTitle("eclipse-workspace - 최준우/src/Main.java - Eclipse IDE");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(null);

setSize(600,600);

setVisible(true);

JLabel la = new JLabel("Hello, Press Buttons!");

JButton[] b = new JButton[SIZE];

la.setLocation((int)(Math.random()*500)+1,(int)(Math.random()*500)+1);

la.setSize(220,40);

c.add(la);

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

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

b[i].setLocation((int)(Math.random()*500)+1,(int)(Math.random()*500)+1);

b[i].setSize(70,30);

c.add(b[i]);

b[i].setVisible(false);

try{

Thread.sleep(M_SEC);

}catch(InterruptedException e){

e.printStackTrace();

}

b[i].setVisible(true);

}

b[5].setBackground(Color.red);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("BorderLayout Practice");

setSize(400,200);

setVisible(true);

Container c = getContentPane();

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

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

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("South"),BorderLayout.WEST);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

Container c= getContentPane();

setTitle("Ten Color Buttons Frame");

c.setLayout(new GridLayout(4,4));

Color[] color = {Color.cyan, Color.blue,Color.orange, Color.yellow, Color.green,Color.white,Color.red, Color.orange, Color.yellow, Color.green, Color.cyan, Color.blue, Color.magenta, Color.DARK_GRAY, Color.pink, Color.gray,};

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

String num = Integer.toString(i);

JButton b = new JButton(num);

b.setBackground(color[i]);

c.add(b);

}

setSize(700,350);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

/*

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

Container c= getContentPane();

c.setLayout(null);

Color[] col = {Color.blue};

setTitle("Random Labels");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

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

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

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

String num = Integer.toString(i);

JLabel l = new JLabel(num);

l.setLocation(x,y);

l.setSize(20,20);

l.setOpaque(true);

l.setBackground(Color.blue);

c.add(l);

}

setSize(300,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}

*/

import javax.swing.*;

import java.awt.*;

public class Main extends JFrame {

public Main() {

setTitle("계산기");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Container c = getContentPane();

c.setLayout(new BorderLayout());

JPanel p1 = new JPanel();

c.add(p1,BorderLayout.NORTH);

p1.setLayout(new FlowLayout());

p1.add(new JLabel("수식입력"));

p1.add(new JTextField(10));

p1.setBackground(Color.gray);

JPanel p2 = new JPanel();

c.add(p2,BorderLayout.CENTER);

p2.setLayout(new GridLayout(4,4));

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

String num = Integer.toString(i);

JButton b = new JButton(num);

Color color = new Color(242,241,238); // Red Green Blue

b.setBackground(color);

p2.add(b);

}

p2.add(new JButton("CE"));

p2.add(new JButton("="));

JPanel p3 = new JPanel();

c.add(p3,BorderLayout.SOUTH);

p3.setLayout(new FlowLayout());

p3.add(new JLabel("계산결과"));

p3.add(new JTextField(10));

p3.setBackground(Color.yellow);

Color[] col = { Color.gray };

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

// String num = Integer.toString(i);

// JLabel l = new JLabel(num);

// JTextField t = new JTextField();

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

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

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

// }

setSize(400,300);

setVisible(true);

}

public static void main(String[] args) {

new Main();

}

}