Where should we use case sensitive in Java

Question

I am noob help me

Answer 1

for creating veriables or method

Answer 2

The class:

public class Program{
}

inside in it the so main method which you need to execute your code:

public static void main(String[] args){
}

methods which you call:

* .nextLine() -> Scanner method
* .parseInt() -> Integer method
* .substring() -> String method
* out.println() -> System method

variables:

* scanner from type Scanner
* value from type String
* numberOne from type int
* numberTwo from type int

Scanner and String are objects (instance of a class).
int is a primitive data type.

Class names or objects starts with capital letter. To create an object you need the keyword new:
Scanner scan = new Scanner(System.in);
String is a bit different because it is an object but you can use it like a primitive data type.

variable names and methods starts with lower case letters and each next word with capital letters: numberOne instead of numberone
And methods have always brackets at the end of the name:
Integer.parseInt()
or value.substring()

myMethod()
myVariable

Answer 3

Maheedhar Vegesana Because String is a class in java and in java first letter of class name must be capital.

String str = new String("hello world");

Also we can write:
String str = "hello world";

And I think it is for java.lang.String

If it is wrong plz correct it!

Answer 4

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String value = scanner.nextLine();

int numberOne = (Integer.parseInt(value.substring(0, 1)) + (Integer.parseInt(value.substring(1, 2))));
int numberTwo = (Integer.parseInt(value.substring(2, 3)) + (Integer.parseInt(value.substring(3, 4))));

System.out.println("Result: " + numberOne + numberTwo);
}
}

what are variables and methods in this code

Answer 5

and why String starts with ^S