{"id":180,"date":"2025-06-22T13:05:08","date_gmt":"2025-06-22T13:05:08","guid":{"rendered":"https:\/\/thetestdata.com\/blog\/?p=180"},"modified":"2025-07-16T10:31:06","modified_gmt":"2025-07-16T10:31:06","slug":"what-is-static-in-java","status":"publish","type":"post","link":"https:\/\/thetestdata.com\/blog\/what-is-static-in-java\/","title":{"rendered":"What is static in java?"},"content":{"rendered":"\n

Let\u2019s break down static<\/code> in Java<\/strong> in the simplest possible way<\/strong>, step by step, and include examples to help you fully understand.<\/h4>\n\n\n\n
\n\n\n\n

\u2705 What Does static<\/code> Mean in Java?<\/h2>\n\n\n\n

Think of static<\/code><\/strong> as meaning “belongs to the class, not to objects”<\/strong>.<\/h4>\n\n\n\n

In Java, you can write code that either:<\/h4>\n\n\n\n
    \n
  • Belongs to each individual object<\/strong> (like someone\u2019s name or age), or<\/li>\n\n\n\n
  • Belongs to the class itself<\/strong>, shared by all objects<\/strong> (like a common rule or counter). That\u2019s where static<\/code> comes in.<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n

    \ud83c\udfaf Real-Life Analogy<\/h2>\n\n\n\n

    Imagine a Car<\/strong> class:<\/h4>\n\n\n\n
      \n
    • Each car object<\/strong> has its own color<\/strong> and speed<\/strong> (different for each car).<\/li>\n\n\n\n
    • But all cars share the same rule<\/strong>: they drive on the same road<\/strong> or follow the same speed limit<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      We can say:<\/h4>\n\n\n\n
        \n
      • color<\/code> and speed<\/code> are non-static<\/strong> (belong to each car).<\/li>\n\n\n\n
      • roadType<\/code> or speedLimit<\/code> is static<\/strong> (shared by all cars, belongs to the class).<\/li>\n<\/ul>\n\n\n\n

        In Java Terms<\/h2>\n\n\n\n

        \ud83d\udc49 1. Static Variables (a.k.a Class Variables)<\/h3>\n\n\n\n
        public class Car {\n    \/\/ static variable - shared by all Car objects\n    static int numberOfCars = 0;\n\n    \/\/ instance variable - each car has its own\n    String color;\n\n    public Car(String color) {\n        this.color = color;\n        numberOfCars++; \/\/ Increase count when a new Car is made\n    }\n\n    public void display() {\n        System.out.println(\"Color: \" + color);\n        System.out.println(\"Total Cars: \" + numberOfCars);\n    }\n}\n<\/code><\/code><\/pre>\n\n\n\n
        Usage:<\/h3>\n\n\n\n
        public class Main {\n    public static void main(String[] args) {\n        Car c1 = new Car(\"Red\");\n        Car c2 = new Car(\"Blue\");\n\n        c1.display();\n        c2.display();\n        \/\/ Output:\n        \/\/ Color: Red, Total Cars: 2\n        \/\/ Color: Blue, Total Cars: 2\n    }\n}\n<\/code><\/code><\/pre>\n\n\n\n
        \u2714\ufe0f numberOfCars<\/code> is static \u2014 it’s shared<\/strong> and keeps track of all cars<\/strong>.<\/p>\n\n\n\n
        \n\n\n\n
        \ud83d\udc49 2. Static Methods<\/h3>\n\n\n\n
        Static methods are methods that belong to the class<\/strong>, not objects. You don\u2019t need to create an object to use them.<\/h4>\n\n\n\n
        public class MathUtil {
            public static int add(int a, int b) {
                return a + b;
            }
        }
        <\/code><\/pre>\n\n\n\n
        Usage:<\/h3>\n\n\n\n
        public class Main {
            public static void main(String[] args) {
                int result = MathUtil.add(5, 3);
                System.out.println(\"Result: \" + result); \/\/ Output: 8
            }
        }
        <\/code><\/pre>\n\n\n\n
        \u2714\ufe0f You didn\u2019t need to write new MathUtil()<\/code> \u2014 because add()<\/code> is static<\/strong>.<\/h3>\n\n\n\n
        \n\n\n\n
        \ud83d\udc49 3. Static Blocks<\/h3>\n\n\n\n
        Static blocks are used to initialize static data<\/strong>. It runs once<\/strong> when the class is loaded.<\/h3>\n\n\n\n
        public class Demo {
            static int x;

            static {
                x = 10;
                System.out.println(\"Static block executed\");
            }
        }
        <\/code><\/pre>\n\n\n\n
        \n\n\n\n
        \ud83d\udc49 4. Static Classes (Nested)<\/h3>\n\n\n\n
        You can make a static inner class<\/strong> (a class inside another class that doesn’t need an outer object).<\/h4>\n\n\n\n
        public class Outer {
            static class Inner {
                public void show() {
                    System.out.println(\"Inside static inner class\");
                }
            }
        }
        <\/code><\/pre>\n\n\n\n
        Usage:<\/h3>\n\n\n\n
        public class Main {
            public static void main(String[] args) {
                Outer.Inner obj = new Outer.Inner();
                obj.show();
            }
        }
        <\/code><\/pre>\n\n\n\n
        \n\n\n\n
        \ud83e\udde0 Summary Table<\/h2>\n\n\n\n
        Feature<\/th>static<\/code><\/th>Non-static<\/code><\/th><\/tr><\/thead>
        Belongs to<\/td>Class<\/td>Object<\/td><\/tr>
        Accessed using<\/td>ClassName.member<\/code><\/td>object.member<\/code><\/td><\/tr>
        Memory usage<\/td>One copy shared by all<\/td>Each object has its own<\/td><\/tr>
        Example use<\/td>Utility methods, counters<\/td>Personal data like name<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        <\/p>\n","protected":false},"excerpt":{"rendered":"
        Learn what the static keyword means in Java. Discover how it defines class-level variables, methods, and blocks for efficient memory and shared access.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-container-style":"default","site-container-layout":"default","site-sidebar-layout":"default","disable-article-header":"default","disable-site-header":"default","disable-site-footer":"default","disable-content-area-spacing":"default","footnotes":""},"categories":[17],"tags":[],"class_list":["post-180","post","type-post","status-publish","format-standard","hentry","category-java-interview-questions"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/comments?post=180"}],"version-history":[{"count":5,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions"}],"predecessor-version":[{"id":461,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/180\/revisions\/461"}],"wp:attachment":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/media?parent=180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/categories?post=180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/tags?post=180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}