9.JAVA in Tamil|Scanner scanner = new Scanner(System.in) | java input from user| java Scanner|

@JCLecture #javaprogramming #javatutorial #javainstitute #javasparrow #javaclass #java #java_class_object
import java.util.Scanner; or
import java.uitl.*;
Scanner input = new Scanner(System.in);
nextInt()
nextDouble()
nextFloat()
nextLong()
nextByte()
nextShort()
next() or nextLine()
next().charAt(0)
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1. Scanner: Scanner is the name of a Java class that is used for reading input. It's part of the java.util package, so to use it, you need to either import the entire package (import java.util.*;) or specifically import the Scanner class (import java.util.Scanner;), which is more common.
2. input: scanner is the name of the variable that you are declaring. It's of type Scanner, which means it can store an instance of the Scanner class. You can choose any valid variable namne you like, but it's a good practice to choose a meaningful name, like scanner, to make your code more readable.
3. =: The equals sign (=) is the assignment operator in Java. It's used to assign a value to a variable.
4. new Scanner(System.in): This part of the code creates a new instance of the Scanner class. Here's what's happening:
• new is a keyword in Java used to create a new object.
• Scanner is the class name.
• (System.in) is the constructor call. In this case, you're using the Scanner constructor that takes an InputStream as an argument. System.in represents the standard input stream, which is typically the keyboard. So, you're telling the Scanner to read input from the keyboard.