プログラマ専用SNS ミクプラ

コード:

      public void paint(Graphics g)
        {
                g.drawImage(image,0,0,this);

        }

コード:

import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

public class paintSmp extends JFrame implements Runnable {	
	private JComponent label;

	public static void main(String args[]) {
		JFrame win = new paintSmp();
		win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		win.setBounds(10 , 10 , 400 , 300);
		win.setVisible(true);
	}
	public paintSmp() { 
		label = new LabelEx("Sample Program");
		getContentPane().add(label);
		new Thread(this).start();
	}

	private int color = 0;
	private boolean increase = true;
	public void run() {
		while(true) {
			SwingUtilities.invokeLater(new Runnable() {
				public void run() {
					label.setFont(new Font("Serif" , Font.PLAIN , 20));
					label.setForeground(new Color(color));
					label.repaint();
				}
			});
			if (increase) color++;
			else color--;

			if (color == 255) increase = false;
			else if (color == 0) increase  = true;

			try { Thread.sleep(10); }
			catch(InterruptedException err) {
				//例外処理をここに記述します。
			}
		}
	}
}

class LabelEx extends JComponent {
	private String label;
	public LabelEx(String label) { this.label = label; }

	public void paintComponent(Graphics g) {
		if (label != null) {
			FontMetrics fm = getFontMetrics(getFont());
			g.drawString(label ,
				getWidth() / 2 -  fm.stringWidth(this.label) / 2 ,
				getHeight() / 2 + fm.getDescent()
			);
		}
	}
}