Fix Java Cannot Be Resolved to a Variable Error

This guide will teach you how to fix the cannot be resolved to a variable error in Java.

For this, you need to understand the scope of a programming language. Keep reading this compact guide to learn more and get your fix to this error.

Fix the cannot be resolved to a variable Error in Java

In Java programming language, we use curly brackets {} to identify the scope of a class, functions, and different methods.

For instance, take a look at the following code:

public static void calculateSquareArea(int x)
{
    System.out.println(x*x);
}

In the above code example, the scope of the variable x is limited within the curly brackets {}. You cannot call or use it outside this scope. If you try, the cannot be resolved to a variable error will come out.

It means it cannot detect the initialization of variables within its scope. Similarly, if you make a private variable, you cannot call it inside a constructor.

Its scope is out of bounds. Here’s the self-explanatory code.

public class Main 
{
    public static void main(String args[]) 
    {
        int var  =3;  
        // scope is limited within main Block;
        // The Scope of var Amount Is Limited..........
        // Accessible only Within this block............
    }
    public static void Calculate (int amount)
    {
      // The Scope of Variable Amount Is Limited..........
      // Accessible only Within this block............
    }
}