Java Programming Language Static Variable, Method And Nested Class

What is the use of static keyword in java?

Static keyword can be applied with variables, methods, blocks and nested class.

Static variables, methods and nested classes

A static method can be called without the need for creating an instance of a class. class name can be used to invoke the static variable and methods.

The static keyword in Java is used mainly for memory management.

The static variable can be used to refer the common property of all objects and it is not unique for each object.

Memory is allocated only once in class area at the time of class loading for static variables. It makes your program memory efficient (it saves memory).

Java Program to explain static variable, method and nested class

   class StaticExample
// memory is allocated only once and value is retained.
static int count=10; 
// static block
System.out.println("Static block is called first");  
// static nested class
static class Inner 
static void msg()
 System.out.println("msg method is called from static Inner class");
//A static method belongs to the class rather than object of a class.
//A static method can be called without the need for creating an instance of a class.
//static method can access static data member and can change the value of it.
static int add(int val1, int val2) 
return val1+val2;
int a=50; // non-static variable cannot be accessed by static method

public static void main(String args[])
System.out.println(StaticExample.count); // static variable is called
int result= StaticExample.add(16, 16); // Static method is called
// Instance variable cannot be accessible inside static method.
//System.out.println(a);  // Compile time error

//this and super cannot be used in static context.
StaticExample obj1=new StaticExample(); 
StaticExample obj2=new StaticExample();     

Java static keyword

Java Programming Language Examples

GCD and Rational Number Java Program

Java Queue Program using exception

Java Stack Program using exception

Addition of three integers java program

Biggest of three integers java program

Fibonacci numbers java program

Arithmetic Operations Menu java program

Second Smallest Element In Array Java Program

Transpose Of A Matrix Java Program

Java Program to Display triangle of stars (*)

Java Programming Prints Product Tables

Java Program to Display triangle of numbers

Java Programming Gets Current Date

Java Programming Finds Character Vowel or Consonent

Java Programming HCF and LCM Computation

Java Programming Sum of Command Line Integer Arguments

Java Programming Multiplication of Command Line Integer Arguments

Java Programming Multiplication of Command Line Floating Point Numeric Arguments

Java Programming String Contains or Not

Java Programming Gets Grade Description using Switch

Java Programming CSV File Reader

Java Programming Character Frequency Count in String using for each

Java Programming Finds Min from Integer Array by Passing Array to Method

Java Programming Linear Search

Java Programming Binary Search

Java Programming Ternary Search

Java Programming Generates Range of Numbers

Java Programming Generates Range of Characters

Java Programming Computes Square Root Value

Java Programming Checks Number is Positive or Negative

Java Programming Checks Number is Odd or Even

Java Programming Computes Plot Area

Java Programming Convert Number of Days into Years

Java Programming Checks a Year is Leap Year, Century Year or Not

Java Programming Checks a Character is Digit, Letter or neither digit nor letter

Java Programming Checks a Number is Palindrome or not

Java Programming Sum of Two Matrix

Java Programming Power Computation

Java Programming Checks Number is an Armstrong Number or not

Java Programming Temperature Unit Conversions

Java Programming Generates Random Numbers in Specified Range

Java Programming Computes Sum of Digits and Product of Digits

Java Programming Computes Reverse Number

Java Programming Computes Factorial Value

Java Programming Checks Prime Number or not

Java Programming Computes Harmonic Series

Java Programming Generates Floyd's Triangle

Java Programming Reverses String

Java Programming Checks Palindrome String or not

Java Programming Opens Notepad

Java Programming Searches String using RegEx Pattern

Java Programming Searches Word in String

Java Programming Gets System Environment Variables

Java Programming Gets IP Address of Server Name

Java Programming Arrays Sort and Reverse using sort method

Java Programming Bubble Sorting

Java Programming Selection Sorting

Java Programming Insertion Sorting

Java Programming Merge Sorting

Java Programming Quick Sorting

Java Programming Counting Sort

Java Programming Radix Sorting

Java Programming Sorting Array of Strings

Java Programming String Characters Sorting

Java Programming Sum of First N Numbers

Java Programming Product of First N Numbers

Java Program to get URL details

Java Program to get URL HTML Content

Privacy Policy  |  Copyrightcopyright symbol2020 - All Rights Reserved.  |  Contact us   |  Report website issues in Github   |  Facebook page   |  Google+ page

Email Facebook Google LinkedIn Twitter