driver.java

来自「Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套」· Java 代码 · 共 38 行

import javax.swing.JFrame;
import java.awt.TextArea;

/** Fibonacci sequence program Program  (Figure 10.6)
 *  Author: David Riley
 *  Date: January, 2005
 */
import javax.swing.JFrame;
import java.awt.TextArea;
public class Driver  {
	private JFrame window;
	private TextArea outPane;
	/**	post:	the first 100 Fibonacci numbers are displayed,
	 *				one per line, on a TextArea object    
	 */
	public Driver()   {
		int  aFibo, nextFibo, newFibo, linesOutput;
		window = new JFrame("Fibonacci Numbers");
		window.setBounds(10, 10, 300, 400);
		window.setVisible(true);
		window.setLayout(null);
		outPane = new TextArea();
		outPane.setBounds(20, 20, 120, 300);
		window.add(outPane, 0);
		aFibo = 1;
		nextFibo = 1;
		linesOutput = 0;
		while ( linesOutput != 30 )   {
			outPane.append(aFibo + "\n");
			newFibo = aFibo + nextFibo;
			aFibo = nextFibo;
			nextFibo = newFibo;
			linesOutput++;
		}
		window.repaint();
	}
}