Converting Characters to Integers: A Java Journey by Divyanshu Khare

•  First of all we need to create a package
• My package is saved by HelloWorld name so this is showing package HelloWorld;
• At the end of my package syntax I have entered semi colon ; because in java we are telling the browser that our statement is ending here . 
• import java.util.Scanner;      = this is basically a syntax for scan data , get input from console or others,  the thing to note is this first letter of scanner will always in Capital form Scanner and then dont forget to enter semi colon ; 

package HelloWorld;                   

import java.util.Scanner;

public class LearningJava {

Now let me introduce main syntax of java

it's called boiler plate

public static void main(String[] args) {

This syntax will inform to browser  ----------- I'm starting code from here

Scanner scan = new Scanner(System.in);

here scan is name for scanner (you can use any name instead of scan) =  new Scanner means we are creating a new scanner and (System.in) is inform you that I'm getting input from console 

Note: जब हमें output चाहिए तो वहाँ हम syntax रखेंगे 

System.out.print("HelloWorld");

In this code we are trying to print HelloWorld
Point to highlight that: डबल quote के use से जो भी वैल्यू होगी वो प्रिन्ट हो जाएगी !

Now let me come to the topic -----------

After write Scanner code 

Because I want to take character input from console so I will use a data type, that is Char

Now PFB - -- - 👇

char ch = scan.next().charAt(0);

// char ch = scan.next().charAt(0);    this is only for reading

Now let me explain this---------

• char is a data type for character and ch is a random name for char 
• scan.next().charAt(0); ======= charAt(0) is basically used to inform to the crawler or browser that take character from console 0 means if I'm writing a sentence on console like Divyanshu then because here is syntax ...... charAt(0) so browser will print only 1st Character That is D from this name.
  
   

int i = ch;

System.out.print(i);

}

}

You can see that I have entered Divyanshu on console but its printing only 1 letter from Divyanshu which is D

Important Points to Learn----------------

• You can use another data type to get character input on java That is ;;;;;   String

syntax to print string 

String s = scan.next();

System.out.print(s);

• Now here you can see on console I have entered Divyanshu Khare but once I'm trying to print what is coming out ? Answer is Only Divyanshu .. Why this is happening ? 😒 bcse of I'm using a Syntax String that is scan.next();
  
• Now if u want to print all Characters with Space also, then You have to use another syntax.
  
  
• Syntax to print all character from console:

• String st = scan.nextLine();

  System.out.print(st);

• Next Line means console se aaye data me ek line ke character ke bad next line me aaye character ko print kiya jata hai .