Unable to create inner class object in java

Question

I am unable to create an inner class object in java:

package OOO;

class Car{
    class Engine{

        void display() {
            System.out.println("this is inner diaplay() method");
        }

    }
}

public class Sample8InnerClassCar {
    Car c = new Car();
    Car.Engine e = c.new Car.Engine();
}

its throwing me an error : cannot allocate member type Car.Engine. could someone please help me to understand more?

See also: https://stackoverflow.com/questions/70324/java-inner-class-and-static-nested-class — lexicore, Aug 27 '17 at 10:39
@DmitryGorkovets No you can't. 'Static inner' is a contradiction in terms'. If you make it 'static', it ceases to be 'inner', and the semantics change. — user207421, Aug 28 '17 at 02:01

score 7 · Accepted Answer · answered Aug 27 '17 at 10:42

7

The correct syntax is:

Car.Engine e = c.new Engine();

Complete code snippet:

package OOO;

class Car {
    class Engine {

        void display() {
            System.out.println("this is inner diaplay() method");
        }
    }
}

public class Sample8InnerClassCar {

    Car c = new Car();
    Car.Engine e = c.new Engine();
}

answered Aug 27 '17 at 10:42

lexicore

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Car.Engine e = new Car().new Engine(); also worked :) – jaibalaji Aug 27 '17 at 11:11

Unable to create inner class object in java

1 Answers1