functions.java

一个java写的加密算法

/*
 * Copyright 2004-2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

package samples.webapps.simple.jsp2.examples.el;

import java.util.*;

/**
 * Defines the functions for the jsp2 example tag library.
 * 
 * <p>Each function is defined as a static method.</p>
 */
public class Functions {
    public static String reverse( String text ) {
        return new StringBuffer( text ).reverse().toString();
    }

    public static int numVowels( String text ) {
        String vowels = "aeiouAEIOU";
	int result = 0;
        for( int i = 0; i < text.length(); i++ ) {
	    if( vowels.indexOf( text.charAt( i ) ) != -1 ) {
	        result++;
	    }
	}
	return result;
    }

    public static String caps( String text ) {
        return text.toUpperCase();
    }
}