stringutil.java

利用servlet写的用户注册登陆

package com.tarena.util;

public class StringUtil {
	public static String join(String[] stringAry, String joinToken) {
		if (stringAry == null) {
			return null;
		}

		StringBuilder builder = new StringBuilder();
		for (int i = 0; i < stringAry.length; i++) {
			if (i > 0) {
				builder.append(joinToken);
			}
			builder.append(stringAry[i]);
		}
		
		return builder.toString();
	}
}