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How to get created date in Java |
Usually programmers will use Windows machine to write their programs, compile and then deploy it to *NIX environment in a
production setup. You can achieve this with JAVA, surely not with languages like "C". Because objective is to compile and
deploy on any platform JAVA does not provide function like File.getCreateDate(). Reason being many platforms particularly with low
memory footprints only provide last modified date.
There are two work arounds to achieve this
1. Either we can use some native OS command to get create date and then fetch that value in JAVA. e.g. Use Command prompt in Windows or
Shell Script in *NIX environment.
2. Use JNI to run a native code function like function written in "C"
I found this solution on http://www.daniweb.com/.
I had difficulty executing CMD through JAVA probably due to permissions or virus scanner.
So I created a batch file to execute dir command. Also it needs to use dir /TC command to display create date.
getcreatedate.bat
GetCreateDateInWin.java
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class GetCreateDateInWin
{
public static void main(String args[]) throws Exception {
Process process = null;
BufferedReader br = null;
try
{
String filename = "C:/apps/hsqldb/bin/getcreatedate.bat";
process = Runtime.getRuntime().exec(filename);
br = new BufferedReader(new InputStreamReader(process
.getInputStream()));
String line = null;
while ((line = br.readLine()) != null)
{
System.out.println(line);
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
process.destroy();
br.close();
}
}
}
Now parse this output to get create date
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