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How to use file filter to list files
public File[] getListOfDirectories(File folder){
FileFilter directoryFileFilter = new FileFilter(){
public boolean accept(File pathname) {
for(File file: pathname.listFiles()){
if(file.isDirectory() && file.getName().contains("Collection")){
return true;
return false;
File[] reportFolderDirectories = folder.listFiles(directoryFileFilter);
return reportFolderDirectories;
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