截取linux文件存储路径方法

package com.tydic.eshop.action.freemarker;

public class dddd {

    public static void main(String[] args) {
        String strParentUrl = "/home/tomcat7/ecp/t8086/webapps/ecp/FreeMarker/1463766670142/error/html/index.html";
         String[] s = strParentUrl.split("/");
         String ddd = display(s,8,s.length);
         System.out.println(ddd);
         
    }
    
      public static String display(String[] str,int a,int b) {
            StringBuffer sb = new StringBuffer();
            for(int i=a;i<b;i++) {
                sb.append("/"+str[i]);
            }
            String requestString = sb.toString().substring(1, sb.toString().length());
            return requestString;
             
             
        }
}