example04_wraps.java

java课程设计教材上的程例题序代码

package example;

import javax.swing.JOptionPane;

public class Example04_Wraps {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		String s = JOptionPane.showInputDialog(null, "Input a String");
		double d = Double.parseDouble(s);
		Double dd = new Double(d);
		int i = dd.intValue();
		String hs = Integer.toHexString(i);
		int digitCount = 0;
		int letterCount = 0;
		for (int j=0; j<hs.length(); j++)
		{
			char c = hs.charAt(j);
			if (Character.isDigit(c)) digitCount++;
			if (Character.isLetter(c)) letterCount++;
		}
		String mes = "";
		mes += hs + "\n";
		mes += "digitCount = " + digitCount + "\n";
		mes += "letterCount = " + letterCount;
		JOptionPane.showMessageDialog(null, mes);
	}

}