Affects PMD Version:
6.26.0
Description:
The UnusedAssignment rule flags unused assignments for fields, but the fields might be used in the program flow when invoking methods in between assignments.
Code Sample demonstrating the issue:
Suppose the Worker class calls the listener in its constructor (it is of course questionable to begin with, but something similar is used in a real-life scenario):
class A implements Worker.Listener {
private boolean ignore;
private Worker worker;
A() {
ignore = true;
worker = new Worker(this);
ignore = false;
}
void doWork() {
worker.work();
}
public void onWork() {
if (ignore) {
return;
}
System.out.println("onWork");
}
}
This reports
A.java:6: The value assigned to field 'ignore' is never used (overwritten on line 8)
Steps to reproduce:
See code sample.
Running PMD through: [CLI | Ant | Maven | Gradle | Designer | Other]
N/A
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