system.in

What is System.in and System.out?

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Every language supports both input (like scanf()) and output (like printf()). Java supports two types of input (from command-prompt and from GUI) and two types of output (at command prompt and at GUI). The statements System.in System.out are of Java for command-prompt. System.in is used to take input from command prompt and System.out is used …

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Keyboard Input DataInputStream

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In keyboard reading, three programs are given using DataInputStream, BufferedReader and Scanner. Of all, using java.util.Scanner is the easier and includes many methods to check the input data is valid to read. Example on Keyboard Input DataInputStream Following program uses readLine() method of DataInputStream to read data from the keyboard. import java.io.*; public class KeyboardReading1 …

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