/*
********************************************************
* GetFilesAsArray
********************************************************
*/
String[] FileUtils.GetFilesAsArray(String directory)
{
	File dir = new File(directory);
	return dir.list();
}

/*
********************************************************
* ConvertArrayToList
********************************************************
*/
List CollectionUtils.ConvertArrayToList(Object []inArray)
{
	ArrayList list = new ArrrayList(inArray.Length);
	for(int i=0;i<inArray.Length;i++)
	{
		list.add(inArray[i]);
	}
	return list;
}

/*
********************************************************
* CopyArrayToList
********************************************************
*/
List CollectionUtils.CopyArrayToList(Object []inArray, List targetList)
{
	for(int i=0;i<inArray.Length;i++)
	{
		targetList.add(inArray[i]);
	}
	return targetList;
}


/*
********************************************************
* GetFiles
********************************************************
*/
List FileUtils.GetFiles(String directory)
{
	File dir = new File(directory);
	return ConvertArrayToList(dir.list());
}

satya - 9/6/2020, 12:09:22 PM

Use collections api instead

Use collections api instead

satya - 9/6/2020, 12:14:12 PM

Here is a better implementation

public static List<String> getFiles(String rootPath)
   {
      File rootDir = new File(rootPath);
      Utils.massert("getFiles", 
           rootDir.exists(),
           rootPath + " doesn't exist");
      
      String[] filelist = rootDir.list();
      return Arrays.asList(filelist);
   }

satya - 9/6/2020, 4:46:13 PM

In 2020 the file list

public static List<File> getFiles(String rootPath)
   {
      File rootDir = new File(rootPath);
      Utils.massert("getFiles", 
           rootDir.exists(),
           rootPath + " doesn't exist");
      
      File[] filelist = rootDir.listFiles();
      return Arrays.asList(filelist);
   }
   
   public static List<File> getFiles(String rootPath, String wildCardString)
   {
      File rootDir = new File(rootPath);
      Utils.massert("getFiles", 
           rootDir.exists(),
           rootPath + " doesn't exist");

      FileFilter wildCardFilter = new WildcardFileFilter(wildCardString);
      File[] fileList = rootDir.listFiles(wildCardFilter);
      return Arrays.asList(fileList);
   }

satya - 9/6/2020, 4:47:47 PM

This uses Apache Commons IO library

This uses Apache Commons IO library

satya - 9/6/2020, 4:48:11 PM

Imports

import java.io.File;
import java.io.FileFilter;
import org.apache.commons.io.filefilter.WildcardFileFilter;

satya - 9/6/2020, 4:49:26 PM

A number of links to java api are here

A number of links to java api are here