Inner Class

title: Inner Class in Java description: Java mein inner classes ke types aur use

Class ke andar class = Inner Class.

Types

1. Member Inner Class

java exampleWoHoTech

class Outer {
    int x = 10;

    class Inner {
        void display() {
            System.out.println("Outer x = " + x); // Outer member access
        }
    }
}

Outer outer = new Outer();
Outer.Inner inner = outer.new Inner();
inner.display();

2. Static Nested Class

java exampleWoHoTech

class Outer {
    static int x = 10;

    static class StaticNested {
        void display() {
            System.out.println("x = " + x); // Sirf static members
        }
    }
}

Outer.StaticNested obj = new Outer.StaticNested();

3. Local Inner Class

Method ke andar class.

java exampleWoHoTech

class Outer {
    void method() {
        class Local {
            void display() { System.out.println("Local class"); }
        }
        new Local().display();
    }
}

4. Anonymous Inner Class

java exampleWoHoTech

// Interface implement karo bina class name ke
Runnable r = new Runnable() {
    @Override
    public void run() {
        System.out.println("Anonymous class running");
    }
};
new Thread(r).start();

Use Cases

Helper classes jo bahar expose nahi karni
Event handling
Encapsulation improve karna

title: Inner Class in Java description: Java mein inner classes ke types aur use

Class ke andar class = Inner Class.

Types

1. Member Inner Class

java exampleWoHoTech

class Outer {
    int x = 10;

    class Inner {
        void display() {
            System.out.println("Outer x = " + x); // Outer member access
        }
    }
}

Outer outer = new Outer();
Outer.Inner inner = outer.new Inner();
inner.display();

2. Static Nested Class

java exampleWoHoTech

class Outer {
    static int x = 10;

    static class StaticNested {
        void display() {
            System.out.println("x = " + x); // Sirf static members
        }
    }
}

Outer.StaticNested obj = new Outer.StaticNested();

3. Local Inner Class

Method ke andar class.

java exampleWoHoTech

class Outer {
    void method() {
        class Local {
            void display() { System.out.println("Local class"); }
        }
        new Local().display();
    }
}

4. Anonymous Inner Class

java exampleWoHoTech

// Interface implement karo bina class name ke
Runnable r = new Runnable() {
    @Override
    public void run() {
        System.out.println("Anonymous class running");
    }
};
new Thread(r).start();

Use Cases

Helper classes jo bahar expose nahi karni
Event handling
Encapsulation improve karna

Inner Class

Types

1. Member Inner Class

2. Static Nested Class

3. Local Inner Class

4. Anonymous Inner Class

Use Cases

Continue learning this concept

Inner Class

Types

1. Member Inner Class

2. Static Nested Class

3. Local Inner Class

4. Anonymous Inner Class

Use Cases

Continue learning this concept