Given:javapublic class OuterClass {String outerField = "Outer field";class InnerClass {void accessMembers() {System.

Understanding Inner Classes in Java

Aninner class (non-static nested class)requires an instance of the outer classbefore it can be instantiated.

Incorrect instantiationof the inner class at n1:

java

InnerClass innerObject = new InnerClass(); // Compilation error

Since InnerClass is anon-staticinner class, itmust be created from an instance of OuterClass.

Correct Way to Instantiate the Inner Class

java

OuterClass outerObject = new OuterClass();

OuterClass.InnerClass innerObject = outerObject.new InnerClass(); // Correct

Thiscorrectly associatesthe inner class with an instance of OuterClass.

Why Does Compilation Fail?

The error occurs atline n1because InnerClass is beinginstantiated incorrectly.

Thus, the correct answer is:Compilation fails at line n1.

References:

Java SE 21 - Nested and Inner Classes

Java SE 21 - Accessing Outer Class Members