Java IO Flow Summary

The Java IO Stream classification and its main usage are as follows:

IO stream

|--Byte stream

|--byte input stream

InputStream:

int read ();//read one byte at a time

int read (byte[] bys);//read a byte array of a specified size at a time

Direct sub-class:

|--fileinputstream

|--bufferedinputstream

|--byte output stream

OutputStream:

void write (int by);//write one byte at a time

void Write (byte[] bys, int index, int len);//write one part of a character array at a time

Direct sub-class

|--fileoutputstream

|--bufferedoutputstream

|--character Stream

|--character input stream

Reader:

int read ();//read one character at a time

int read (char[] chars);//read one character array at a time

Direct sub-class

|--inputstreamreader (Byte character input conversion stream, not commonly used)

|--filereader (Common)

|--bufferedreader (efficient character input stream with buffer)

String readLine ();//read one line at a time

|--character output stream

Writer

void write (int ch);//write one character at a time

void Write (char[] chars, int index, int len);//write one part of a character array at a time

Direct sub-class

|--outputstreamwriter (Byte character output conversion stream, not commonly used)

|--filewriter (Common)

|--bufferedwriter (efficient character output stream with buffer)

void NewLine ();//write a line break

void write (string line);//write a string at a time

Java IO Flow Summary