Skip to content

Field toString() method in Java with Examples

Static Method in Java With Examples

Last Updated : 02 May, 2025

In Java, the static keyword is used to create methods that belongs to the class rather than any specific instance of the class. Any method that uses the static keyword is referred to as a static method.

Features of Static Method:

A static method in Java is associated with the class, not with any object or instance.
It can be accessed by all instances of the class, but it does not rely on any specific instance.
Static methods can access static variables directly without the need for an object.
They cannot access non-static variables (instance) or methods directly.
Static methods can be accessed directly in both static and non-static contexts.

Syntax to Declare a Static Method

access_modifier static return_type methodName() {
// method body
}

The name of the class can be used to invoke or access static methods.

Syntax to Call a Static Method

ClassName.methodName();

Example 1: Static Method Cannot Access Instance Variables

The JVM executes the static method first, even before creating class objects. So, static methods cannot access instance variables, as no object exists at that point.

Java

// Java program to demonstrate that // the static method does not have // access to the instance variable import java.io.*;  public class Geeks {          // static variable     static int a = 40;      // instance variable     int b = 50;      void simpleDisplay()     {         System.out.println(a);         System.out.println(b);     }      // Declaration of a static method     static void staticDisplay()     {        System.out.println(a);      }      // main method     public static void main(String[] args)     {         Geeks obj = new Geeks();         obj.simpleDisplay();          // Calling static method         staticDisplay();     } }

Output

40 50 40

Example 2: Static Methods Accessed from Both Static and Non-Static Methods

Java

// Java program to demonstrate that // in both static and non-static methods, // static methods are directly accessed import java.io.*;  public class Geeks {        static int num = 100;     static String str = "GeeksForGeeks";      // This is Static method     static void display()     {         System.out.println("Static number is: " + num);         System.out.println("Static string is: " + str);     }      // non-static method     void nonstatic()     {         // our static method can accessed          // in non static method         display();     }      // main method     public static void main(String args[])     {         Geeks obj = new Geeks();                // This is object to call non static method         obj.nonstatic();                // static method can called          // directly without an object         display();     } }

Output

Static number is: 100 Static string is: GeeksForGeeks Static number is: 100 Static string is: GeeksForGeeks

Why Use Static Methods?

To access or modify static variables or perform actions not tied to any instance.
Useful for utility or helper classes like Collections, Math, etc.

Restrictions on Static Methods

Non-static data members or non-static methods cannot be used by static methods, and static methods cannot call non-static methods directly.
In a static environment, this and super are not allowed to be used.

Why is the main Method Static in Java?

The main method must be static because the JVM does not create an object of the class before invoking it. If it were a non-static method, JVM would first build an object before calling the main() method, resulting in an extra memory allocation difficulty.

Difference Between the Static Method and Instance Method

Instance Methods	Static Methods
It requires an object of the class.	It does not require an object of the class.
It can access all attributes of a class.	It can access only the static attribute of a class.
The methods can be accessed only using object reference.	The method is only accessed by class name.
Syntax: Objref.methodname()	Syntax: className.methodname()
It's an example of pass-by-value programming.	It is an example of pass-by-reference programming.

Field toString() method in Java with Examples

S

sanketnagare

Improve

Article Tags :

Practice Tags :

Java

Similar Reads

Field set() method in Java with Examples

The set() method of java.lang.reflect.Field is used to set the value of the field represented by this Field object on the specified object argument to the specified new value passed as parameter. The new value is automatically unwrapped if the underlying field has a primitive type. If the field is s

Optional of() method in Java with examples

The of() method of java.util.Optional class in Java is used to get an instance of this Optional class with the specified value of the specified type. Syntax: public static <T> Optional<T> of(T value) Parameters: This method accepts value as parameter of type T to create an Optional insta

Year toString() method in Java with Examples

The toString() method of Year class in Java is used to return the string representation of this Year object. Syntax: public String toString() Parameter: This method does not accepts any parameter. Return Value: It returns the string representation of this Year object. Below programs illustrate the t

Field toString() method in Java with Examples

The toString() method of java.lang.reflect.Field is used to get a string describing this Field. The format of the returned string is the access modifiers for the field, if any, followed by the field type, followed by a space, followed by the fully-qualified name of the class declaring the field, fol

Year now() method in Java with examples

The now() method of Year class in Java is used to return the current year from the system clock in the default time-zone. Syntax: public static Year now() or, public static Year now(Clock clock) or, public static Year now(ZoneId zone) Parameter: The parameter is optional for this method as shown in

ArrayList size() Method in Java with Examples

In Java, the size() method is used to get the number of elements in an ArrayList. Example 1: Here, we will use the size() method to get the number of elements in an ArrayList of integers. [GFGTABS] Java // Java program to demonstrate the use of // size() method for Integer ArrayList import java.util

util.date class methods in Java with Examples

Following are some important date class methods : .toString() : java.util.Date.tostring() method is a java.util.Date class method.It displays the Current date and time. Here Date object is converted to a string and represented as: day mon dd hh:mm:ss zz yyyy day : day of the week mon : month dd : da

Abstract Method in Java with Examples

In Java, Sometimes we require just method declaration in super-classes. This can be achieved by specifying the Java abstract type modifier. Abstraction can be achieved using abstract class and abstract methods. In this article, we will learn about Java Abstract Method. Java Abstract MethodThe abstra

List add() Method in Java with Examples

The List add() method adds (appends) an element to a list. It can be used for both ArrayList and LinkedList. Example of List add() Method: Java Code // Java program to demonstrate // ArrayList usage import java.io.*; import java.util.ArrayList; import java.util.List; class GFG { public static void m

Field get() method in Java with Examples

The get() method of java.lang.reflect.Field used to get the value of the field object. If Field has a primitive type then the value of the field is automatically wrapped in an object. If the field is a static field, the argument of obj is ignored; it may be null Otherwise, the underlying field is an