In java Input /Output Stream to process the input and produce the output

Posted by Gyan Guide on May 13th, 2017

The java.io package contains nearly every class those we need to perform input and output (I/O) in Java. All these streams represent an input source and an output destination. The stream in the java.io package supports many data such as primitives, object, localized characters, etc.

Java I/O (Input and Output) is used to process the input and produce the output.

Java uses the concept of stream to make I/O operation fast. The java.io package contains all the classes required for input and output operations.

We can perform file handling in java by Java I/O API.

Stream

A stream can be defined as a sequence of data. Java course in bangalore There are two kinds of Streams -

-InPutStream

-Output Stream

InputStream

Java application uses an input stream to read data from a source , source may be a file , an array , peripheral device or socket.

OutputStream

Java application uses an output stream to write data to a destination, it may be a file, an array, peripheral device or socket.

Byte Streams

Java byte streams are used to perform input and output of 8-bit bytes. Though there are many classes related to byte streams but the most frequently used classes are FileInputStream and FileOutputStream.

Character Streams

Java Byte streams are used to perform input and output of 8-bit bytes, whereas JavaCharacter streams are used to java training center bangalore perform input and output for 16-bit unicode. Though there are many classes related to character streams but the most frequently used classes are FileReader and FileWriter.

Standard Streams

All the programming languages provide support for standard I/O where the user's program can take input from a keyboard and then produce an output on the computer screen. Java provides the following three standard streams −

Standard Input − This is used to feed the data to user's program and usually a keyboard is used as standard input stream and represented as System.in.

Standard Output − This is used to output the Advanced java training in bangalore data produced by the user's program and usually a computer screen is used for standard output stream and represented as System.out.

Standard Error − This is used to output the error data produced by the user's program and usually a computer screen is used for standard error stream and represented as System.err.

FileInputStream

This stream is used for reading data from the files. Objects can be created using the keyword new and there are several types of constructors available.

Java FileInputStream class obtains input bytes from a file. It is used for reading byte-oriented data (streams of raw bytes) such as image data, audio, video etc. You can also read character-stream data. But, for java/j2ee classes bangalore reading streams of characters, it is recommended to use FileReader class.

FileOutputStream

FileOutputStream is used to create a file and write data into it. The stream would create a file , if it doesn't already exist, before opening it for output.

If we have to write primitive values into a file, use FileOutputStream class. We can write byte-oriented as well as character-oriented data through FileOutputStream class. But, for character-oriented data, it is preferred to use FileWriter than FileOutStream.

File Navigation and I/O

There are several other classes that we best core java training in bangalore would be going through to get to know the basics of File Navigation and I/O

- File Class

- FileReader Class

- FileWriter Class

Java BufferedOutputStream Class :

Java BufferedOutputStream class is used for buffering an output stream. It internally uses buffer to store data. It adds more efficiency than to write data directly into a stream. So, it makes the performance fast.

Java BufferedInputStream Class ;

Java BufferedInputStream class is used to read information from stream. It internally uses buffer mechanism to make the performance fast.

The important points about BufferedInputStream are:

- When the bytes from the java training center bangalore stream are skipped or read, the internal buffer automatically refilled from the contained input stream, many bytes at a time.

- When a BufferedInputStream is created, an internal buffer array is created.

This is the short description about the Input / Output stream .To get the more knowledge on java join Infocampus Software Training Institute .

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