Java常用字符串格式化操作类StringFormat

package com.wesley.framework.commen;    import java.util.Collection;    import org.apache.commons.collections.CollectionUtils;  import org.apache.commons.lang.ArrayUtils;  import org.apache.commons.lang.xwork.StringUtils;    public class StringFormat {     /**    * 模仿C#格式化字符串    *     * @param str    * @param args    * @return    */   public static String format(String str, String... args) {    for (int i = 0; i < args.length; i++) {     str = str.replaceFirst("\\{" + i + "\\}", args[i]);    }    return str;   }     /**    * 安全链接字符串    *     * @param strs    * @return    */   public static String softLink(String... strs) {    StringBuffer sb = new StringBuffer();    for (String s : strs) {     sb.append(StringUtils.isEmpty(s) ? "" : s);    }    return sb.toString();   }     /**    * 安全去首位链接字符串    *     * @param strs    * @return    */   public static String softTrimLink(String... strs) {    StringBuffer sb = new StringBuffer();    for (String s : strs) {     sb.append(StringUtils.trimToEmpty(s));    }    return sb.toString();   }     /**    * 安全toString    *     * @param str    * @return    */   public static String toString(Object str) {    if (ObjectUtil.isEmpty(str))     return null;    return str.toString();   }     /**    * 通过","链接List    *     * @param strlist    * @return    */   public static String formatByComma(Collection<String> strlist) {    if (CollectionUtils.isEmpty(strlist))     return "";    String[] strs = new String[strlist.size()];    strlist.toArray(strs);    return StringFormat.formatByComma(strs);   }     /**    * 将数组轻而易举的转换成用逗号分隔的字符串    *     * @param strs    * @return    */   public static String formatByComma(String... strs) {    return StringFormat.formatByComma(true, strs);   }     /**    * 将数组轻而易举的转换成用逗号分隔的字符串    *     * @param strs    * @return    */   public static String formatByComma(boolean filterNull, String... strs) {    if (!filterNull)     ArrayUtils.removeElement(strs, null);    String str = ArrayUtils.toString(strs);    return StringUtils.substring(str, 1, str.length() - 1);   }     /**    * 在数组每个元素前后追加数据    *     * @param array    * @param head    * @param end    * @return    */   public static String[] formatEcho(String head, String end, String... array) {    if (ObjectUtil.isEmpty(array))     return null;    for (int i = 0; i < array.length; i++) {     if (ObjectUtil.isEmpty(array[i]))      continue;     array[i] = head + array[i] + end;    }    return array;   }     /**    * 把用","分割的字符串，转换成数组    *     * @param str    * @return    */   public static String[] splitByComma(String str) {    return StringUtils.split(str, ",");   }     public static void main(String[] args) {    String[] stringArray = { "Red", "Orange", "Blue", "Brown", "Red" };    System.out.print(StringFormat.formatByComma(stringArray));   }    }