Java: Find .txt files in specified folder

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You can use the listFiles() method provided by the java.io.File class.

import java.io.File;
import java.io.FilenameFilter;

public class Filter {

    public File[] finder( String dirName){
        File dir = new File(dirName);

        return dir.listFiles(new FilenameFilter() { 
                 public boolean accept(File dir, String filename)
                      { return filename.endsWith(".txt"); }
        } );

    }

}

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