Which function is used to read the input from console?

scanf() Function : scanf() function is used to read/input values of variables using the standard input device such as keyboard.

How do you read console input using a scanner class?

We create an object of the Scanner class and pass the predefined object System.in into it. The System.in represents the Standard input Stream that is ready and open to taking the input from the user. Then using the object of the Scanner class, we call the nextLine() method to read the String input from the user.

What is the use of console nextLine () in Java?

Reading a Line of Input String nextLine(): Returns the next line of text, or, if you are in the middle of a line, returns the remainder of the line. Caution: If you are in the middle of a line, nextLine does not return the next line, but instead the remainder of the current line.

What are the different ways to read input from console in Java?

In Java, there are four different ways for reading input from the user in the command line environment(console)….2. Using Scanner Class

  1. Convenient methods for parsing primitives (nextInt(), nextFloat(), …) from the tokenized input.
  2. Regular expressions can be used to find tokens.
  3. The reading methods are not synchronized.

What is meant by console input and output?

The Console is a window of the operating system through which users can interact with system programs of the operating system or with other console applications. The interaction consists of text input from the standard input (usually keyboard) or text display on the standard output (usually on the computer screen).

How do you read input?

The following example allows user to read an integer form the System.in.

  1. import java.util.*;
  2. class UserInputDemo.
  3. {
  4. public static void main(String[] args)
  5. {
  6. Scanner sc= new Scanner(System.in); //System.in is a standard input stream.
  7. System.out.print(“Enter first number- “);
  8. int a= sc.nextInt();

How do you read a scanner value?

nextLine() method.

  1. import java.util.*;
  2. public class ScannerExample {
  3. public static void main(String args[]){
  4. Scanner in = new Scanner(System.in);
  5. System.out.print(“Enter your name: “);
  6. String name = in.nextLine();
  7. System.out.println(“Name is: ” + name);
  8. in.close();

How do you use nextLine in Java?

Example 1

  1. import java.util.*;
  2. public class ScannerNextLineExample1 {
  3. public static void main(String args[]){
  4. Scanner scan = new Scanner(System.in);
  5. System.out.print(“Enter Item ID: “);
  6. String itemID = scan.nextLine();
  7. System.out.print(“Enter Item price: “);
  8. String priceStr = scan.nextLine();

Does Java have nextLine?

The hasNextLine() is a method of Java Scanner class which is used to check if there is another line in the input of this scanner. It returns true if it finds another line, otherwise returns false.

Is a console a input?

In computer technology, a console can mean different things depending on the context. It usually means a combination of a display monitor and an input device, usually a keyboard and mouse pair, which allows a user to input commands and receive visual output from a computer or computer system.

What is console output in Java?

Console output in Java is very easy because the print and println methods will work with any type of data. There is a separate version of each of these methods in the PrintStream class so that this is possible. There is also a version of the print and println methods that will print information for any object.

What is input and output in Java?

Java I/O (Input and Output) is used to process the input and produce the output. Java uses the concept of a stream to make I/O operation fast. The java.io package contains all the classes required for input and output operations.

What is a Java console?

Java Console is a simple debugging aid that redirects any System.out and System.err to the console window. It is available for applets running with Java Plug-in and applications running with Java Web Start . Debugging Options. Java Console provides various options as shown below to make applet and application debugging easier.