A variable provides us with named storage that our programs can manipulate. Java provides three types of variables. Class variables − Class variables also known as static variables are declared with the static keyword in a class, but outside a method, constructor or a block. There would only be one copy of each class variable per class, regardless of how many objects are created from it. Instance variables − Instance variables are declared in a class, but outside a method. When space is allocated for an object in the heap, a slot for each instance variable value is created. ... Read More

Following are the notable differences between Class (static) and instance variables. Instance variables Static (class) variables Instance variables are declared in a class, but outside a method, constructor or any block. Class variables also known as static variables are declared with the static keyword in a class, but outside a method, constructor or a block. Instance variables are created when an object is created with the use of the keyword 'new' and destroyed when the object is destroyed. Static variables are created when the program starts and destroyed when the program stops. ... Read More

String is not a primitive data type. Java.lang package provides the String class therefore, it is an object type. You can create a string variable directly like any other variables as −String s = "myString";(or)By instantiating the string class using the new keyword as −String s = new String("myString");Example Live Demoimport java.util.Scanner; public class StringExample { public static void main(String args[]){ Scanner sc = new Scanner(System.in); System.out.println("Enter a sting value:"); String str = sc.nextLine(); System.out.println(str.getClass()); } }OutputEnter a sting value: hello class java.lang.String

Python is renowned for its adaptability and potency as a programming language, equipping developers with an extensive array of functions and methods to handle strings, pattern searches, and a variety of text-related operations. Among these functions lies 'search()', an integral component of the 're' (regular expression) module. This comprehensive article delves into the depths of the 'search()' function in Python, presenting step-by-step elucidations and practical code examples to unravel its usage. Consequently, enabling you to become proficient in employing regular expressions for text search operations in Python. Comprehending Regular Expressions Before delving into the specifics of the 'search()' function, it ... Read More

Java tokens are smallest elements of a program which are identified by the compiler. Tokens in java include identifiers, keywords, literals, operators and, separators.

Boolean literals represent only two values true or false. And in Java the value of 1 is assumed as true and the value of 0 is assumed as false. Example Live Demo public class Test{ public static void main(String args[]) throws Exception{ boolean bool1 = true; boolean bool2 = false; boolean bool = (25==(100/4)); System.out.println(bool1); System.out.println(bool2); System.out.println(bool); } } Output true false true

Character literals represents alphabets (both cases), numbers (0 to 9), special characters (@, ?, & etc.) and escape sequences like , \b etc. Whereas, the String literal represents objects of String class. Example Live Demo public class LiteralsExample { public static void main(String args[]){ char ch = 'H'; String str = "Hello"; System.out.println("Value of character: "+ch); System.out.println("Value of string: "+str); } } Output Value of character: H Value of string: Hello

Integer literals represent fixed integer values like 900, 12, 400, -222 etc. (with in the integer range). Whereas, floating point literals represents fractional values i.e. numbers with decimal values like 25.53, 45.66, 58.66 etc. while writing these literals we should use the notation f or F as 25.53. Example Live Demo public class StringExample { public static void main(String args[]){ int num1 = 100; float num2 = 30.0f; System.out.println("Value of integer:"+num1); System.out.println("Value of integer:"+num2); } } Output Value of integer:100 Value of integer:30.0

A literal is a source code representation of a fixed value. They are represented directly in the code without any computation. Literals can be assigned to any primitive type variable. Example byte a = 68; char a = 'A' byte, int, long, and short can be expressed in decimal(base 10), hexadecimal(base 16) or octal(base 8) number systems as well. Prefix 0 is used to indicate octal, and prefix 0x indicates hexadecimal when using these number systems for literals. For example − int decimal = 100; int octal = 0144; int hexa = 0x64; String ... Read More

Data types are those which specify the type of data represented by the variable and literal is the that is stored in to the variable. A literal is a source code representation of a fixed value. They are represented directly in the code without any computation. Literals can be assigned to any primitive type variable. Example byte a = 68; char a = 'A'