C++ Tutorial Index

C++ Tutorial C++ History C++ Installation C++ First Program C++ cin and cout C++ Data type C++ Variable C++ operator C++ Keywords

C++ Control Statements

C++ If C++ Nested if C++ If-else C++ If-else-if C++ Switch C++ Break C++ Continue C++ Goto C++ For loop C++ While loop C++ Do while loop

C++ Functions

C++ Call by Value C++ Call by Reference C++ Recursion Function C++ Inline function C++ Friend function

C++ Arrays

Single dimension array Two dimension array

C++ Strings

C++ Strings

C++ Inheritance

C++ Inheritance Single level Inheritance Multilevel Inheritance Multiple Inheritance Hierarchical Inheritance Hybrid Inheritance

C++ Polymorphism

C++ Polymorphism C++ Overloading C++ Overriding C++ Virtual Function

C++ Pointers

C++ Pointers C++ this pointer

C++ Exception Handling

C++ Exception Handling

C++ Constructors

C++ Constructors Default Constructor Parameterize Constructor Copy constructor Constructor Overloading Destructor

C++ File Handling

C++ File Handling C++ Writing to file C++ Reading file C++ Close file

Miscellaneous

C Vs C++ C++ Comments C++ Data Abstraction C++ Identifier C++ Memory Management C++ Storage Classes C++ Void Pointer C++ Array To Function C++ Expressions C++ Features C++ Interfaces C++ Encapsulation std::min in C++ External merge sort in C++ Remove duplicates from sorted array in C++ Precision of floating point numbers Using these functions floor(), ceil(), trunc(), round() and setprecision() in C++ C++ References C++ Friend Functions C++ Mutable keyword Unary Operators in C++ Initialize Array of objects with parameterized constructors in C++ Differences between #define & const in C/C++ C++ Program to Implement Shell Sort C++ Program to Implement Merge Sort Storage Classes in C Vector resize() in C++ Passing by Reference Vs. Passing by the pointer in C++ Free vs delete() in C++ goto statement in C and C++ C++ program to read string using cin.getline() C++ String Concatenation Heap Sort in C++ Swap numbers in C++ Input Iterators in C++ Fibonacci Series in C++ C ++ Program: Alphabet Triangle and Number Triangle C++ Program: Matrix Multiplication C++ Program to Print Fibonacci Triangle Stack in C++ Maps in C++ Queue in C++ C++ Bitset C++ Algorithms Priority Queue in C++ C++ Multimap C++ Deque Function Pointer in C++ Sizeof() Operators in C++ C++ array of Pointers free() Vs delete in C Timsort Implementation Using C++ CPP Templates C++ Aggregation C++ Enumeration C++ Math Functions C++ Object Class C++ Queue Initialize Vector in C++ Vector in C++ C++ STL Components Function overloading in C++ C++ Maximum Index Problem C++ find missing in the second array C++ Program to find the product array puzzle C++ Program To Find Largest Subarray With 0 Sum C++ Program To Move All Zeros To The End Of The Array C++ Program to find the element that occurs once C++ Program to find the largest number formed from an array Constructor Vs Destructor C++ Namespaces C++ OOPs Concept C++ Static C++ Structs C++ Try-Catch C++ User Defined Exceptions C++ Virtual Destructor C++ vs C# Malloc() and new in C++ Palindrome Number Program in C++ Snake Code in C++ Splitting a string in C++ Structure Vs Class in C++ Virtual Function Vs Pure Virtual Function C++ Bidirectional Iterators C++ Forward Iterators C++ Iterators C++ Output Iterators C++ Range-based For Loop Converting string into integer in C++ LCM Program in C++ Type conversion in C++ Add two numbers using the function in C++ Advantage and disadvantage friend function C++ Armstrong Number Program in C++ ATM machine program in C++ using functions Binary to Decimal in C++ Bit Manipulation in C++ C++ Constructor C++ Dijkstra Algorithm Using the Priority Queue C++ int into String C++ Signal Handling Decimal to Binary in C++ Decimal to Hexadecimal in C++ Decimal to Octal in C++ Factorial Program in C++ Function in C++ Hexadecimal to Decimal in C++ Octal to Decimal in C++ Reverse a Number in C++ Structure Vs Class in C++ C++ Forward Iterators C++ Output Iterators C++ Prime number program Char Array to String in C++ Constructor Overloading in C++ Default arguments in C++ Different Ways to Compare Strings in C++ Dynamic Binding in C++ Program to convert infix to postfix expression in C++ SET Data Structure in C++ Upcasting and Downcasting in C++ Reverse an Array in C++ Fast Input and Output in C++ Delete Operator in C++ Copy elision in C++ C++ Date and Time C++ Bitwise XOR Operator Array of sets in C++ Binary Operator Overloading in C++ Binary Search in C++ Implementing the sets without C++ STL containers Scope Resolution Operator in C++ Smart pointers in C++ Types of polymorphism in C++ Exception Handling in C++ vs Java Const Keyword in C++ Type Casting in C++ Static keyword in C++ vs Java Inheritance in C++ vs Java How to concatenate two strings in C++ Programs to Print Pyramid Patterns in C++ swap() function in C++ Structure of C++ Program Stringstream in C++ and its applications rand() and srand() in C / C++ C++ Ternary Operator C++ Scope of Variables While Loop Examples in C++ Star pattern in C++ using For Loops For Loop Examples in C++ Do-While Loop Examples in C++ Top 5 IDEs for C++ That You Should Try Once Assertions in C/C++ C++ Convert Int to String Continue in C++ While loop Diamond Pattern in C++ using For Loop How to Reverse a String in C++ using Do-While Loop How to Reverse a String in C++ using For Loop How to Reverse a String in C++ using While Loop Infinite loop in C++ Loops in C++ Returning Multiple Values from a Function using Tuple and Pair in C++ wcscpy(), wcslen(), wcscmp() Functions in C++

Static keyword in C++ vs Java

Both in C++ and Java, the static keyword is employed for essentially the same function. But there are some variations. The static keyword's similarities and differences between C++ and Java are discussed in this article.

What do we mean by the keyword Static ?

In the C++ programming language, static is used to help an element with some strict characteristics. Static elements are permitted to be given the storing location only in the static storage region once during the program's entire lifetime. And they're justifiable as long as the program is being executed.

In Java, memory management is the main application for the static keyword. Blocks, nested classes, variables, methods, and blocks can all be utilised using the static keyword. Instead of referring to a class instance, the static keyword is connected to the class.

Java and C++ Share Similarities for Static Keyword :

  • Both languages allow for the definition of static data members.
  • In both the programming languages, static member methods can be defined.
  • Without constructing any objects, it is simple to access static members.

C++ and Java's differences for static keywords :

C++ :

  • Static blocks are not supported by C++.
  • Declaring Static Local Variables is possible.

Java :

  • Java allows for static blocks (also known as static clause). It is often in use for static initialization of a class.
  • The use of static local variables is not permitted.

Below, the details of the aforementioned points are discussed :

1.Static Data Members:

Static data members in Java, just like they are in the C++ programming language, are shared among all the objects and are class members. For instance, the static variable count is often used to tally the number of objects produced in the Java programme below.

Example :

class Testing {
	static int counting = 0;


	Testing() { counting++; }
	public static void main(String arr[])
	{
		Testing T1 = new Testing();
		Testing T2 = new Testing();
		Testing T3 = new Testing();
		Testing T4 = new Testing();
		Testing T5 = new Testing();
		System.out.println("In Total " + counting
						+ " objects are created");
	}
}

Output :

In Total 5 objects are created

2. Static Member Methods :

Static member methods can be expressed in the C++ as well as Java programming languages. The following limitations apply to methods that are class members and are specified as static :

A) They are limited to calling static methods. As an illustration, the compilation of the programme mentioned below fails. funct() is not static and is used in the static main() function.

Example :

class Main {
	public static void main(String argmnts[])
	{
		System.out.println(fun());
	}
	int funct() { return 123; }
}

B) Only static data should be accessed.

C) They are unable to access this or super. As an illustration, the compilation of the following software fails.

Example :

class BaseClass {
	static int a = 0;
}


class DerivedClass extends BaseClass {
	public static void funct()
	{
		System.out.println(super.a);
	}
}

Output :

Compiler Error: non-static variable can’t be referenced from a static context

D) Static methods and data members can be accessible without first generating an object, much like in C++. The class names can be used to get to them. As an illustration, the static function funct() and the static data member counting are accessible without the use of an object in the following programme.

Example :

class Testing {
	static int counting = 0;
	public static void funct()
	{
		System.out.println("\nStatic funct() is called");
	}
}


class Main {
	public static void main(String ar[])
	{
		System.out.println("Testing.counting = " + Testing.counting);
		Testing.funct();
	}
}

Output :

Testing.counting = 0
Static funct() is called

3. Static Block :

With exception of C++, Java allows a specific type of block known as a static block (sometimes known as a static clause), which is used for a class' static initialization. The static block's code is only invoked once.

4. Static Local Variables :

C++ allows the use of static local variables, in contrast to Java. For instance, the compilation of the following Java application fails :

Example :

class Testing {
	public static void main(String argmnts[])
	{
		System.out.println(funct());
	}
	static int funct()
	{
		static int a = 97;
		return a--;
	}
}

Output :

Compiler Error: Static local variables are not allowed



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