Coding⏱️ 2 min read📅 2026-05-31

How to Fix: What causes error "No enclosing instance of type Foo is accessible" and how do I fix it?

The error occurs because the compiler is unable to find an enclosing instance of type Hello for class Thing. This happens when a nested class is not properly defined.

Quick Answer: To fix this, define the nested class as static or make it an inner class with access modifier.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

The error "No enclosing instance of type Foo is accessible" occurs when you try to access a non-static nested class from outside the class. In your case, the Thing class is a non-static nested class inside the Hello class.

🔍 Why This Happens

  • [Cause]

✅ Best Solutions to Fix It

Method 1: Accessing a Nested Class from Outside the Class

  1. Step 1: Remove access modifier from the nested class.

Method 2: Making a Static Nested Class

  1. Step 1: Add the static keyword to the nested class.

🎯 Final Words

[Wrap-up]

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