Swing

package Swing;

import java.awt.Color;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Random;

import javax.swing.JFrame;

public class WindowTest {
	public static void main(String[] args) {
		Frame window = new Frame("제목");
		window.setTitle("제목이 변경된 윈도우");
		window.setBounds(1200, 200, 400, 300);
		window.setBackground(Color.ORANGE);
		//색상은 0 ~ 255 3개로 표현한다. 그러므로 모든 경우의 수 를 곱한 값을 랜덤으로 적는다.
		window.setBackground(new Color(new Random().nextInt(16_581_376)));
		window.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				window.dispose();	// 닫기
			}
		});
		
		window.setVisible(true);
	}
}

package Swing;

import java.awt.Color;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Random;

public class WindowTest2 extends Frame{
	
	public WindowTest2() {
		this("제목 없는 윈도우");
	}

	public WindowTest2(String title) {
		setTitle(title);
		setBounds(1200, 400, 400, 300);
		setBackground(new Color(new Random().nextInt(16_581_376)));
		addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				dispose();
			}
		});
		setVisible(true);
	}
	public static void main(String[] args) {
		new WindowTest2();
		new WindowTest2("제목있는 윈도우");
		
	}

}

package Swing;

import java.awt.Color;
import java.awt.Container;

import javax.swing.JFrame;

public class WindowTest3 {
	public static void main(String[] args) {
		JFrame window = new JFrame("제목이 있는 윈도우");
		window.setBounds(1200, 200, 400, 300);

		Container con = window.getContentPane();
		con.setBackground(Color.black);
//		window.setBackground(Color.BLACK);
		
		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		window.setVisible(true);
		
	}
}

package Swing;

import java.awt.Color;
import java.awt.Container; 
import java.util.Random;

import javax.swing.JFrame;

public class WindowTest4 extends JFrame{

	
	public WindowTest4() {
		this("제목 없는 윈도우");
	}
	
	public WindowTest4(String title) {
		Color[] arColor = {
				Color.BLACK, Color.BLUE, Color.RED, Color.PINK, Color.YELLOW, Color.GREEN
		};
		setTitle(title);
		setBounds(1200, 200, 400, 300);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container con = this.getContentPane();
		con.setBackground(arColor[new Random().nextInt(6)]);
		setVisible(true);
	}
	
	public static void main(String[] args) {
		new WindowTest4("배경색 랜덤으로 적용하기");
		
	}
}

package Swing;

import java.awt.Color;
import java.awt.Container;
import java.text.SimpleDateFormat;
import java.util.Random;

import javax.swing.JFrame;

public class WindowTest5 extends JFrame implements Runnable{
	// 현재시간 초단위로 나타내기
	
	public WindowTest5() {}

	public WindowTest5(String title) {
		Color [] arColor = {
				Color.BLACK, Color.CYAN, Color.GRAY, Color.MAGENTA, Color.ORANGE,
				Color.RED
		};
		setTitle(title);
		setBounds(1200, 200, 400, 300);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container con = this.getContentPane();
		con.setBackground(arColor[new Random().nextInt(6)]);
		setVisible(true);
	}
	public static void main(String[] args) {
		WindowTest5 window = new WindowTest5 ("제목 있는 윈도우");
		Thread t = new Thread(window);
		t.start();
	}
	@Override
	public void run() {
		SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.SSS");
		while(true) {
			setTitle(sdf.format(System.currentTimeMillis()));
			try {
				Thread.sleep(1);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
}