import javax.swing.text.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
import java.awt.*;
public class Fibonacci {
public static void main(String[] args) {
StringBuffer result =
new StringBuffer("<html><body><h1>Fibonacci Sequence</h1><ol>");
long f1 = 0;
long f2 = 1;
for (int i = 0; i < 50; i++) {
result.append("<li>");
result.append(f1);
long temp = f2;
f2 = f1 + f2;
f1 = temp;
}
result.append("</ol></body></html>");
JEditorPane jep = new JEditorPane("text/html", result.toString());
jep.setEditable(false);
JScrollPane scrollPane = new JScrollPane(jep);
JFrame f = new JFrame("Fibonacci Sequence");
f.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
f.setContentPane(scrollPane);
f.setSize(512, 342);
EventQueue.invokeLater(new FrameShower(f));
}
// This inner class avoids a really obscure race condition.
// See http://java.sun.com/developer/JDCTechTips/2003/tt1208.html#1
private static class FrameShower implements Runnable {
private final Frame frame;
FrameShower(Frame frame) {
this.frame = frame;
}
public void run() {
frame.setVisible(true);
}
}
}
|
