need to extract key from properties file
<p>see i have one PROPERTIES File now i have to write a program for extraction of all keys from that file</p>

<pre><code>    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
</code></pre>

<p>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 <strong>hashmap</strong> or <strong>arraylist</strong> <p>
so please help me</p>
