/** * Shows the size of a file system directory/folder. */ public class FolderSize { public static void main(String args[]) throws Exception { if (args.length < 1) { System.err.println("usage: java FolderSize StartFolderName"); System.exit(1); }
System.out.println("Size = " + getFolderSize(new File(args[0]))); } public static long getFolderSize(File folder) throws IllegalArgumentException { // Validate if (folder == null || !folder.isDirectory()) throw new IllegalArgumentException("Invalid folder"); String list[] = folder.list(); if (list == null || list.length < 1) return 0; // Get size File object = null; long folderSize = 0; for (int i=0; i < list.length; i++) { object = new File(folder, list[i]); if (object.isDirectory()) folderSize += getFolderSize(object); else if (object.isFile()) folderSize += object.length(); } return folderSize; } }
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import java.net.*;
import java.io.*;
import java.util.*;
/**
* Shows the size of a file system directory/folder.
*/
public class FolderSize
{
public static void main(String args[]) throws Exception
{
if (args.length < 1)
{
System.err.println("usage: java FolderSize StartFolderName");
System.exit(1);
}
System.out.println("Size = " + getFolderSize(new File(args[0])));
}
public static long getFolderSize(File folder)
throws IllegalArgumentException
{
// Validate
if (folder == null || !folder.isDirectory())
throw new IllegalArgumentException("Invalid folder"); String list[] = folder.list();
if (list == null || list.length < 1)
return 0;
// Get size
File object = null;
long folderSize = 0; for (int i=0; i < list.length; i++)
{
object = new File(folder, list[i]);
if (object.isDirectory())
folderSize += getFolderSize(object);
else
if (object.isFile())
folderSize += object.length();
}
return folderSize;
}
}
import java.io.*;public class FileExt
{
public static long getLength( File tmpfile )
{
long totalLength = 0 ;
if( tmpfile!=null && tmpfile.isDirectory() )
{
File[] files = tmpfile.listFiles( );
for( int i=0; (files != null) && (i < files.length); i++ )
{
totalLength = totalLength + getLength( files[i] );
}
}
else
{
totalLength = totalLength + tmpfile.length();
}
return totalLength;
}
static void main( String arg[] )
{
if( arg.length == 0 )
{
System.out.println("please usage: java FileExt path");
System.exit(1);
}
File f = new File( arg[0] );
if( f.isDirectory() )
{
System.out.println( arg[0] +" is directory." );
}
System.out.println(arg[0]+ " length is " + getLength( f ) );
}
}