How to delete files, based on a matching pattern in the filename in a directory.

[renu]

Hi

Anyone pls tell me how to delete files for example having


files names like:-
12098_All_School_Reports.csv
12367_All_School_Reports.csv
:
:

I need to look for files having the pattern
_All_School_Reports.csv and delete only those files from a directory.

How to do that in java...

Anyhelp is appreciated...
Thank You

[Fubarable]

A for loop that utilizes the String#contains(...) method should work nicely I think.

[renu]

Sir

i dont get Contains method.

String deleteThisFile = "All_School_Reports.csv";
Files[] files = location.listFiles();

for (File file : files) {
if(file.equals



Can you pls send the code .
Thank You.

[renu]

File[] files = location.listFiles();

for (File file : files)
{
if(file.toString().contains(deleteThisFile)) {
file.delete();
}
// // Delete each file
// if (!file.delete())
// {
// // Failed to delete file
// System.out.println("Failed to delete "+file);
// }
}


Thank You Sir, i got this to work.Thanks You.

[DiamondSoul]

Don't use file.equals. What I would do is have a String variable called ending with a value of "_All_School_Reports.csv", and, inside the for loop:

if(file.length()>=ending.length()){
    if(file.substring(file.length()-ending.length()).equals(ending)){
        //whatever you want to do with the file
    }
}

edit: oops, forgot the toString()s after each case of file.

[JosAH]

Don't use file.equals. What I would do is have a String variable called ending with a value of "_All_School_Reports.csv", and, inside the for loop:

if(file.length()>=ending.length()){
    if(file.substring(file.length()-ending.length()).equals(ending)){
        //whatever you want to do with the file
    }
}

edit: oops, forgot the toString()s after each case of file.

That's what the contains( ... ) method is for (as already suggested).

kind regards,

Jos

[kraigballa]

Don't use file.equals. What I would do is have a String variable called ending with a value of "_All_School_Reports.csv", and, inside the for loop:

if(file.length()>=ending.length()){
    if(file.substring(file.length()-ending.length()).equals(ending)){
        //whatever you want to do with the file
    }
}

edit: oops, forgot the toString()s after each case of file.

Just as an observer trying to figure this out...
So if I had this: 12098_All_School_Reports.csv =28 in length, and ending being this: _All_School_Reports.csv = 23 in length

Performing the first if would result in 28>=23 true, so then the second if would produce _All_School_Reports.csv.equals(ending)...which is true.