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A field which is always assigned before being used from every method that reads
it may be better expressed as a local variable. Using a field in such cases
gives the impression of mutable state in the class where it isn't necessary.
```java
class Frobnicator {
private int sum = 0;
int sum(int a, int b) {
sum = a + b;
return sum;
}
int sum(int a, int b, int c) {
sum = a + b + c;
return sum;
}
```
```java
class Frobnicator {
int sum(int a, int b) {
int sum = a + b;
return sum;
}
int sum(int a, int b, int c) {
int sum = a + b + c;
return sum;
}
```
## Suppression
This check is suppressed by `@SuppressWarnings("FieldCanBeLocal")` as well as
the same suppression mechanisms as `UnusedVariable`
(`@SuppressWarnings("unused")`.
|
