Example

public class ClassA {
private booleanb;
private Thread t;
public classA () {
//...
}
public void methodA() {
//...
b = Thread.interrupted();
}

}
Solução
Altere 'Thread.interrupted()' para 't.interrupted()'

public class ClassA {
private booleanb;
private Thread t;
public classA () {
//...
}
public void methodA() {
//...
b = Tt.interrupted();
}

}