Having a variable with the same name in two unrelated classes is fine, but do the same thing within a class hierarchy and you’ll get confusion at
best, chaos at worst.
Noncompliant code example
public class Fruit
{
protected Season ripe;
protected Color flesh;
// ...
}
public class Raspberry : Fruit
{
private bool ripe; // Noncompliant
private static Color FLESH; // Noncompliant
}
Compliant solution
public class Fruit
{
protected Season ripe;
protected Color flesh;
// ...
}
public class Raspberry : Fruit
{
private bool ripened;
private static Color FLESH_COLOR;
}
Exceptions
This rule ignores same-name fields that are static in both the parent and child classes. It also ignores private parent
class fields, but in all other such cases, the child class field should be renamed.
public class Fruit
{
private Season ripe;
// ...
}
public class Raspberry : Fruit
{
private Season ripe; // Compliant as parent field 'ripe' is anyway not visible from Raspberry
// ...
}
