Same for undefined: age === undefinedIn both cases, you can check for:if (!age) { }and this will be matching both null and undefined.You can also use the typeof operator:let age typeof age //'undefined'although null is evaluated as an object, even though it is a primitive type:...
// Java program to demonstrate//charAt() method of String classimportjava.io.*;publicclassStringExample{publicstaticvoidmain(String []args){ String s ="Deepshikha";//StringSystem.out.println(s.charAt(3));// prints character at index 3System.out.println(s.charAt(6));// prints character at...