Chapter 1  ---


   Short notes - 
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
// _________ 1.Class And Functions ________
        // Class ke ander function class ke ander void main naam ka function
        // Function -- Aak type ka code hai jisko hm call kr skte hain
        // Class -- Group of function (JIske ander bhot sare function ho skte hain )
 // _________ 2. Naming Convensions in Java _______
        //For Classes we use PascalConventions - iska mtlb phela word capital baki small
        //For Functions we use camalCaseConvenstions - isme phela small phir baki sare capital
        //System.out.println("Hello World");
// --------- 3.  Adding Numbers in Java -------
        //int num1 = 22;
        //int num2 = 23 ;
        //int num =  44;
        //int sum = num1+ num2+num ;
        //System.out.println(sum);
// --------- 4.  Inputs From Users ----------
       // Phela use import.java.util.Scanner ;
        //System.out.println("Taking entre from user");
        //Scanner sc = new Scanner(System.in);
        //System.out.println("Enter Number 1 = ");
        //int a = sc.nextInt();
        //System.out.println("Entre Number 2 = ");
        //int b = sc.nextInt();
        //int sum = a+b ;
        //System.out.println("The Sum of these numbers are = " + sum);
// ------- 5 . Checking the number is integer or not -------
        //System.out.println("Enter value you want to check ");
        //Scanner sc = new Scanner(System.in);
        //System.out.println("Enter number 1 = ");
        //boolean b1 = sc.hasNextInt() ;
        //System.out.println(b1);
        // Aak scanner class banye usme imput liya system.in krke
        // phir boolean naam ka variable bnaya jiska kaam hoye hai true ya false btana
        // sc mtlb scanner hasNextInt mltb jo value entre kri hai woh int hai ya nhi
        //**IMP ** next only used for reading one word Whereas nextLine is used for reading one complete line


// EXERCISE 1 ___________________________
// Write a Program to calculate percentage of a given student in CBSC Boards exam . His marks from 5 Subjects must be taken as input from the keyboard
        //System.out.println("Perecntage of students in CBSE");
        //Scanner sc  = new Scanner (System.in);
        //System.out.println("Entre number of Subjects ");
        //int total = sc.nextInt();
        //System.out.println("Entre marks in English =  ");
        //int Eng = sc.nextInt();
        //System.out.println("Entre marks in Hindi = ");
        //int Hindi = sc.nextInt();
        //System.out.println("Entre marks in Maths = ");
        //int Maths = sc.nextInt();
        //System.out.println("Entre marks in Science = ");
        //int Science = sc.nextInt();
        //System.out.println("Entre marks in Social Science ");
        //int Social = sc.nextInt();
        //int TotalMarks = Eng+Hindi+Maths+Science+Social ;
        //int per = TotalMarks/total;

   Code with Harry notes __