package com.snippet.util;
import java.io.File;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Queue;
import java.util.Stack;
import org.apache.commons.io.FileUtils;
public class ListFiles
{
public static void listFiles(String file)
{
File path = new File(file);
Collection files = FileUtils.listFiles(path, null, true);
System.out.println(files.size());
for (File file2 : files)
{
System.out.println(file2.getAbsolutePath());
}
}
public static void listFilesRecursive(String file)
{
File path = new File(file);
for(File f : path.listFiles())
{
if(f.isDirectory())
{
listFilesRecursive(f.getAbsolutePath());
}
else if(f.isFile())
{
System.out.println(f.getAbsolutePath());
}
}
}
public static void printFilesDFS(String dir)
{
Stack stack = new Stack();
stack.push(new File(dir));
while (!stack.isEmpty())
{
File child = stack.pop();
if (child.isDirectory())
{
for (File f : child.listFiles())
{
stack.push(f);
}
}
else if (child.isFile())
{
System.out.println(child.getPath());
}
}
}
public static void listFilesBFS(String dir)
{
Queue queue = new ArrayDeque<>();
queue.offer(new File(dir));
while(!queue.isEmpty())
{
File child = queue.remove();
if(child.isDirectory())
{
for(File f: child.listFiles())
{
queue.add(f);
}
}
else if(child.isFile())
{
System.out.println(child.getAbsolutePath());
}
}
}
public static void main(String[] args)
{
// listFiles("H:\\影 视");
// printFilesDFS("H:\\影 视");
// listFilesBFS("H:\\影 视");
listFilesRecursive("H:\\影 视");
}
}