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import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.util.Date;
public class Listing {
public static void scanDirectory( File currentDirectory, String level )
throws IOException {
for( File file : currentDirectory.listFiles() ) {
char type = file.isDirectory() ? 'd' : '-';
long length = file.length() / 1024;
Date lastModifiedDate = new Date( file.lastModified() );
DateFormat dateFormatter =
DateFormat.getDateTimeInstance( DateFormat.SHORT, DateFormat.SHORT );
String lastModifiedString = dateFormatter.format( lastModifiedDate );
System.out.printf( "%c %10d ko %18s %s%s\n",
type, length, lastModifiedString, level, file.getName() );
if ( file.isDirectory() ) {
Listing.scanDirectory( file, level + " " );
}
}
}
public static void main(String[] args) throws IOException {
String workingDirectory = ".";
if ( args.length > 0 ) {
workingDirectory = args[0];
}
File workingDirectoryFile = new File( workingDirectory );
if ( ! workingDirectoryFile.exists() ) {
System.err.println( "The specified directory not exist" );
System.exit( -1 );
}
if( ! workingDirectoryFile.isDirectory() ) {
System.err.println("The specified path is not a directory");
System.exit( -1 );
}
System.out.println( "Listing of " +
workingDirectoryFile.getCanonicalPath() );
Listing.scanDirectory( workingDirectoryFile, "" );
}
}
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