// Exceptions
    // ------------------------------------------------------------------------

    public boolean hasExceptions() {
        return exceptions != null && !exceptions.isEmpty();
    }

    public List<Exception> getExceptions() {
        return exceptions == null ? Collections.emptyList() : Collections.unmodifiableList(exceptions);
    }

    // Exceptions
    // ------------------------------------------------------------------------

    public boolean hasExceptions() {
        return exceptions != null && !exceptions.isEmpty();
    }

    public List<Exception> getExceptions() {
        return exceptions == null ? Collections.emptyList() : Collections.unmodifiableList(exceptions);
    }

        assertTrue(endLatch.await(30, TimeUnit.SECONDS), "All threads should complete within timeout");
        executor.shutdown();

        // Then - Verify no exceptions occurred
        if (!exceptions.isEmpty()) {
            fail("Concurrent operations caused exceptions: " + exceptions.get(0));
        }

        assertEquals(threadCount * opsPerThread, successCount.get(), "All operations should succeed");
    }

    /**

        System.out.printf("  Avg tree operation time: %.2f ns%n", avgOpTimeNs);

        // Verify thread safety and performance
        assertTrue(exceptions.isEmpty(), "No exceptions should occur with thread-safe collections: " + exceptions);
        assertEquals(threadCount * operationsPerThread, treeOperations.get());
        assertTrue(avgOpTimeNs < 100000, "Tree operations should be reasonable with CopyOnWriteArrayList");

    /**
     * Checks if exceptions during the delay process should be ignored.
     * @return true if exceptions should be ignored, false otherwise.
     */
    public boolean isIgnoreException() {
        return ignoreException;
    }

    /**
     * Sets whether to ignore exceptions.
     * @param ignoreException true to ignore exceptions, false otherwise.
     */

                throw new RuntimeException("Test exception in listener");
            }
        });

        try {
            factory.destroyObject(pooledObject);
            fail("Should propagate exception from listener");
        } catch (Exception e) {
            assertTrue(e.getMessage().contains("Test exception"));
        }
    }

    /**

        try {
            ThreadDumpUtil.printThreadDump();
        } catch (Exception e) {
            fail("printThreadDump() should not throw exceptions: " + e.getMessage());
        }
    }

    public void test_printThreadDumpAsWarn() {
        // This test verifies that printThreadDumpAsWarn() method exists and can be called without exceptions
        try {

                        BufferCache.releaseBuffer(buffer);
                        successCount.incrementAndGet();
                    }
                } catch (Exception e) {
                    synchronized (exceptions) {
                        exceptions.add(e);
                    }
                } finally {
                    endLatch.countDown();
                }
            });
        }

     * exception, and wrongly believes that its exception is new (leading it to logging it when it
     * shouldn't)
     *
     * Our solution is for threads to CAS seenExceptionsField from null to a Set populated with _the
     * initial exception_, no matter which thread does the work. This ensures that
     * seenExceptionsField always contains not just the current thread's exception but also the
     * initial thread's.
     */

```

### Exception Handling
```java
import org.codelibs.core.exception.*;

// Runtime exception wrappers eliminate try-catch boilerplate
try {
    // Code that might throw checked exceptions
    return ClassUtil.newInstance(className); // Wraps checked exceptions automatically
} catch (ClassNotFoundRuntimeException e) {
    // Handle the wrapped exception