Quick Answer

Fix misplaced code outside type declarations.

Understanding the Issue

This syntax error occurs when code exists outside class/interface/enum declarations. Java requires all executable statements to be inside type definitions.

The Problem

This code demonstrates the issue:

Java Error 
System.out.println("Hello"); // Top-level code
public class Test {}

The Solution

Here's the corrected code:

Java Fixed 
// Correct structure
public class Test {
    public static void main(String[] args) {
        System.out.println("Hello"); // Inside class
    }
}

// Alternative: Use static initializer
public class Test {
    static {
        System.out.println("Hello");
    }
}

Key Takeaways

All executable code must be within type declarations.