user_input.java

import java.lang.System;                        //System is  a function stored in java's lang package,this import is not required to use System.out.print bcos it is automatically called
import java.util.Scanner;                       //Scanner is a CLASS used to fetch input from user which is stored in java's util package,this import is required to use obj.next(to get input from user) bcos it is not automatically called
class user_input{
    public static void main(String args[]){
        Scanner a = new Scanner(System.in);     //Scanner class can be used by calling scanner cls followed by a variable name which is a object
        System.out.print("Enter your name : ");
        String b=a.nextLine();
        System.out.print("Enter a num1 : ");
        int c=a.nextInt();
        System.out.print("Enter a num2 : ");
        int d=a.nextInt();
        a.nextLine();                           // getting string datatype as a input after getting an integer input,scanner object dot nextLine is necessary
        System.out.print("Enter your department : ");
        String e = a.nextLine();
        System.out.print("Enter your cgpa : ");
        double f = a.nextDouble();

        System.out.println("My name is "+b);
        System.out.println("Sum is "+ (c+d));
        System.out.println("My department is "+e);
        System.out.println("My cgpa is "+f+"/10");
    }
}