Question

see i have one PROPERTIES File now i have to write a program for extraction of all keys from that file

    1000012001    = Title
    1000012002    = Status
    1000012003    = Start Date
    1000012004    = End Date
    1000012005    = Date
    1000012006    = Name
    1000012007    = Description
    1000012008    = Sr No
    1000012009    = Action
    1000012010    = Add
    1000012011    = COMPASS Alerts
    1000012012    = All
    1000012013    = Apply

like in given example i have to extract keys like 100012001—100012013 from that file keys may not be in one sequence and keys need to store in hashmap or arraylist

so please help me

Answer 1

Properties props = new Properties();
props.load(in); // create input stream for your file.
// from now you have Properties object with your data.
// since properties extends Hashtable the task is done.
// if you still need keys in list, say
List<Object> keys = new ArrayList<Object>(props.keySet());

I hope this helps although the question does not seem very clear for me.