The var keyword was introduced in Java 10.
Type inference is used in var keyword in which it detects automatically
the datatype of a variable based on the surrounding context.
The below examples explain where var is used and also where you can’t use it.
// Java program to explain that
// var can used to declare any datatype
class Demo1 { public static void main(String[] args) { // int var x = 100; // double var y = 1.90; // char var z = 'a'; // string var p = "tanu"; // boolean var q = false; // type inference is used in var keyword in which it // automatically detects the datatype of a variable System.out.println(x); System.out.println(y); System.out.println(z); System.out.println(p); System.out.println(q); }
}

class Variables { public static void main(String[] args) { String msg = "Hello World"; // Strings int number = 10; // Integers float decimal = 7.369f; // Make sure to end the decimal with an f. char letter = 'A'; // Characters boolean result = true; // Booleans }
}

//variable is a container which holds the value//
//ex://
var characters = document.getElementbyID('character').value;
//above the variable is characters and value is character//

// Variable declaration and assignment
int myVariable = 10;
String myString = "Hello, World!";
boolean myBool = true;
double myDouble = 3.14;
// Variable usage
System.out.println(myVariable);
System.out.println(myString);
System.out.println(myBool);
System.out.println(myDouble);

//this are the most common ones
int x = 5;
String y = "hello";
System.out.println(x + y);

improve the readability of code for other developers who read the code.
In some situations