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This noncompliant code example uses a ReentrantLock to protect a java.util.Date instance – recall that java.util.Date is thread-_un_safe by design. The doSomethingSafely() method must catch Throwable to comply with rule ERR06 ERR01-J. Do not allow exceptions to expose sensitive information.
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final class DateHandler {
private final Date date = new Date();
final Lock lock = new ReentrantLock();
public void doSomethingSafely(String str) {
try {
doSomething(str);
} catch(Throwable t) {
// Forward to handler
}
}
public void doSomething(String str) {
lock.lock();
String dateString = date.toString();
if (str.equals(dateString)) {
// ...
}
lock.unlock();
}
}
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