Java - Input & Output Streams | Input & Output Streams In Java | Java Tutorial for Beginners 2023
"Java - Input & Output Streams | Input & Output Streams In Java | Java Tutorial for Beginners
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00:00 - Introduction
00:29 - Input and output in java
00:45 - Display output on the console
05:26 - Read the Input from the keyboard
10:30 - Java program
18:03 - Scanner
21:28 - Implementation in Notepad++
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Notes:
Java brings various Streams with its I/O package that helps the user to perform all the input-output operations. These streams support all the types of objects, data-types, characters, files etc to fully execute the I/O operations.
System.in: This is the standard input stream that is used to read characters from the keyboard or any other standard input device.
System.out: This is the standard output stream that is used to produce the result of a program on an output device like the computer screen.
Here is a list of the various print functions that we use to output statements:
print(): This method in Java is used to display a text on the console. This text is passed as the parameter to this method in the form of String. This method prints the text on the console and the cursor remains at the end of the text at the console.
println(): This method in Java is also used to display a text on the console. It prints the text on the console and the cursor moves to the start of the next line at the console. The next printing takes place from the next line.
System.err: This is the standard error stream that is used to output all the error data that a program might throw, on a computer screen or any standard output device.
Types of Streams:
Depending on the type of operations, streams can be divided into two primary classes:
Input Stream: These streams are used to read data that must be taken as an input from a source array or file or any peripheral device. For eg., FileInputStream, BufferedInputStream, ByteArrayInputStream etc.
Output Stream: These streams are used to write data as outputs into an array or file or any output peripheral device. For eg., FileOutputStream, BufferedOutputStream, ByteArrayOutputStream etc.
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