Static class java

// Java program to Demonstrate How to
// Implement Static and Non-static Classes
 
// Class 1
// Helepr class
class OuterClass {
 
    // Input string
    private static String msg = "GeeksForGeeks";
 
    // Static nested class
    public static class NestedStaticClass {
 
        // Only static members of Outer class
        // is directly accessible in nested
        // static class
        public void printMessage()
        {
 
            // Try making 'message' a non-static
            // variable, there will be compiler error
            System.out.println(
                "Message from nested static class: " + msg);
        }
    }
 
    // Non-static nested class -
    // also called Inner class
    public class InnerClass {
 
        // Both static and non-static members
        // of Outer class are accessible in
        // this Inner class
        public void display()
        {
 
            // Print statement whenever this method is
            // called
            System.out.println(
                "Message from non-static nested class: "
                + msg);
        }
    }
}
 
// Class 2
// Main class
class GFG {
 
    // Main driver method
    public static void main(String args[])
    {
 
        // Creating instance of nested Static class
        // inside main() method
        OuterClass.NestedStaticClass printer
            = new OuterClass.NestedStaticClass();
 
        // Calling non-static method of nested
        // static class
        printer.printMessage();
 
        // Note: In order to create instance of Inner class
        //  we need an Outer class instance
 
        // Creating Outer class instance for creating
        // non-static nested class
        OuterClass outer = new OuterClass();
        OuterClass.InnerClass inner
            = outer.new InnerClass();
 
        // Calling non-static method of Inner class
        inner.display();
 
        // We can also combine above steps in one
        // step to create instance of Inner class
        OuterClass.InnerClass innerObject
            = new OuterClass().new InnerClass();
 
        // Similarly calling inner class defined method
        innerObject.display();
    }
}

Source: geeksforgeeks.org

Static class java

Java has static nested classes but Java has no way of making
a top-level class static.

-1

Similar codes

6 votes189 views9 answers
E
Java
-1 vote174 views1 answer
Java 8 seconds to days
Java
0 vote161 views1 answer
Delete end element in string java
Java
0 vote246 views1 answer
Spring-boot java header appliacation/json constant
Java Spring
1 vote200 views1 answer
Inputing number in java
Java
2 votes160 views2 answers
Error: Could not find or load main class PC
Java
3 votes176 views2 answers
Java loop through object properties
Java
11 votes174 views2 answers
Try catch java
Java
0 vote169 views1 answer
Java instant from timestamp string
Java
0 vote182 views1 answer
Set jcombobox index java
Java