Static Variable Shadowing

Question

What is the mistake in the update method of the Configuration class?
```java
public class Configuration {
    public static int value = 5;
    
    public void update(int newVal) {
        int value = newVal; // Error: A local variable 'value' is declared, shadowing the static variable.
    }
    
    public int getValue() {
        return value;
    }
}
```

Accepted Answer

It declares a new local variable that shadows the static field, so the static value is never updated.

Answer

It fails to pass the new value by reference, so the update does not persist.

Answer

It does not include an else statement to handle alternate cases.

Answer

The update method should be declared static to modify a static variable.