FILE, INPUT, AND OUTPUT

Computer File

"A collection of data stored on a permanent storage device such as a hard disk

Text File

"A file containing data encoded in ASCII or Unicode that can be read using a text editor."

Binary File

"A file containing data stored in binary format (0s and 1s) that is not readable in a text editor."

Root Directory

"The main directory of a storage device."

Folder (Directory)

"A container used to organize files within a storage device."

Hierarchy

"The structure formed by folders within folders."

Path

"The complete list of directories and drive information that specifies the location of a file."

Absolute Path

"A complete file path that provides the full location of a file starting from the root directory."

Relative Path

"A file path that depends on the current working directory for its location."

Path Delimiter (Windows)

"The backslash (\) used to separate directory names in Windows."

Path Delimiter (UNIX/Solaris)

"The forward slash (/) used to separate directory names in UNIX-based systems."

toAbsolutePath()

"A method that converts a relative path into an absolute path."

java.nio.file Package

"A package that provides classes for handling files and directories in Java."

Path Class

"A class that represents the location of a file or directory and stores information about it."

Files Class

"A class that performs operations on files and directories

FileSystem Class

"A class used to create objects that represent the file system of the host computer."

FileSystems Class

"A factory class that provides methods for creating FileSystem objects."

Paths Class

"A helper class that provides methods to create Path objects without explicitly creating a FileSystem object."

Factory Method

"A method that creates and returns objects."

toString()

"Returns the string representation of a Path."

getFileName()

"Returns the last element in a path

getNameCount()

"Returns the number of name elements in a Path."

getName(int index)

"Returns the path element at the specified index."

checkAccess()

"A method used to verify that a file exists and that the program has the required permissions."

Files.exists(Path)

"A method used to determine whether a file exists."

AccessMode.READ

"Checks if a file can be read."

AccessMode.WRITE

"Checks if a file can be written to."

AccessMode.EXECUTE

"Checks if a file can be executed."

readAttributes()

"A method in the Files class that retrieves information about a file."

BasicFileAttributes

"A class that stores file attribute information such as size and timestamps."

size()

"Returns the size of a file in bytes."

creationTime()

"Returns the time a file was created."

lastModifiedTime()

"Returns the time a file was last modified."

FileTime

"An object representing file time in the format yyyy-mm-ddThh:mm:ss."

InputStream

"An abstract class used for reading byte data."

FileInputStream

"A subclass of InputStream used to read data from disk files."

BufferedInputStream

"A subclass that buffers input data for efficient reading."

OutputStream

"An abstract class used for writing byte data."

FileOutputStream

"A subclass of OutputStream used to write data to disk files."

BufferedOutputStream

"A subclass that buffers output data for efficient writing."

PrintStream

"A subclass of FilterOutputStream used for output

Reader

"An abstract class used for reading character streams."

BufferedReader

"A class used to efficiently read text from a character-input stream."

BufferedWriter

"A class used to efficiently write text to a character-output stream."

close()

"Closes the output stream and releases system resources."

flush()

"Forces any buffered output bytes to be written."

write(byte[])

"Writes all bytes from a specified byte array to the output stream."

write(byte[]

int off

getBytes()

"A method that converts a String into a byte array."

System.out

"A PrintStream object used for displaying output to the standard output device."

IOException

"An exception thrown when input or output operations fail."