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How can I trigger an event went directory contents change? 1
- Thread starter no137
- Start date
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1
- #2
If you are wanting to catch files added or removed from
out side your program then you'll have to start a thread
to monitor the contents of the directory.
public class monitor extends Thread
{
public String list[];
public String directory;
public monitor(String direc)
{
directory=direc;
File f=new File(direc);
list=File.list();
}
public void run()
{
File f= new File(directory);
String[] listing=f.list();
if(listing.length != list.length)
{
//event
}else {
for(int i=0;i<listing.length;i++)
if(!(listing.equals(list);
//event
}
try{
sleep(3000);//sleeps 3 seconds
}catch(InterruptedException ie)
{}
}
}
However bear in mind that this will not catch changes to
subdirectories. Also you can get into trouble with
sym-links since it will see sym-links the same as files
ie people will be able to fool it.
out side your program then you'll have to start a thread
to monitor the contents of the directory.
public class monitor extends Thread
{
public String list[];
public String directory;
public monitor(String direc)
{
directory=direc;
File f=new File(direc);
list=File.list();
}
public void run()
{
File f= new File(directory);
String[] listing=f.list();
if(listing.length != list.length)
{
//event
}else {
for(int i=0;i<listing.length;i++)
if(!(listing.equals(list);
//event
}
try{
sleep(3000);//sleeps 3 seconds
}catch(InterruptedException ie)
{}
}
}
However bear in mind that this will not catch changes to
subdirectories. Also you can get into trouble with
sym-links since it will see sym-links the same as files
ie people will be able to fool it.
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