public String tableField(String field){
		StringBuilder sb=new StringBuilder();
		
		if(field!=null && !"".equals(field)){
			List<String> list = Arrays.asList(field.split("_"));
			for(int i=0;i<list.size();i++){
				if(i==0){
					sb.append(list.get(i).toLowerCase());
				}else if(i<list.size()){
					String s=list.get(i);
					String ups=s.substring(0, 1).toUpperCase()+s.substring(1, s.length()).toLowerCase();
					sb.append(ups);
				}
			}
		}
		return sb.toString();
	}