Affects PMD Version: 6.x
Rule: UnusedLocalVariable
Description:
Index variables of for loops should be ignored by this rule. This works if a single index is used, but for multiple variables, a false positive violation is reported.
Note: This is already fixed with PMD 7.0.0-rc1.
Found via #3123.
Code Sample demonstrating the issue:
public class UnusedLocalVarsMultiple {
public void sample1() {
int a = 0, b = 1; // a and b unused (line 3)
}
public void sample2() {
int a = 0, b = a; // only b unused (line 6)
}
public void sample3() {
for (int i = 0; i < 10; i++); // i is loop index, is used and should be ignored
}
public void sample4() {
for (int i = 0, j = 0; i < 10; i++, j++); // i and j are loop indices, both are used (line 12)
}
public void sample5() {
for (int i = 0, j = 0; i < 10; i++); // i and j are loop indices, but j is not used (line 15)
}
}Expected outcome:
PMD reports a violation at line 12, but that's wrong. That's a false positive.
Affects PMD Version: 6.x
Rule: UnusedLocalVariable
Description:
Index variables of for loops should be ignored by this rule. This works if a single index is used, but for multiple variables, a false positive violation is reported.
Note: This is already fixed with PMD 7.0.0-rc1.
Found via #3123.
Code Sample demonstrating the issue:
Expected outcome:
PMD reports a violation at line 12, but that's wrong. That's a false positive.