}
                    }
                }
            });
        }

        // Start all threads
        for (Thread thread : threads) {
            thread.start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // Verify no exceptions
        assertTrue(exceptions.isEmpty());
    }

            return Optional.of(Boolean.TRUE);
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> threads() {
        if (commandLine.hasOption(CLIManager.THREADS)) {
            return Optional.of(commandLine.getOptionValue(CLIManager.THREADS));
        }
        return Optional.empty();
    }

    @Override
    public Optional<String> builder() {

    ExecutionException e = assertThrows(ExecutionException.class, () -> future.get());
    assertThat(e).hasCauseThat().isSameInstanceAs(expected);
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testRenaming() throws Exception {
    String oldName = Thread.currentThread().getName();
    Supplier<String> newName = Suppliers.ofInstance("MyCrazyThreadName");
    Callable<@Nullable Void> callable =

 * (method {@link #add}) are contended across threads, the set of variables may grow dynamically to
 * reduce contention. Method {@link #sum} (or, equivalently, {@link #longValue}) returns the current
 * total combined across the variables maintaining the sum.
 *
 * <p>This class is usually preferable to {@link AtomicLong} when multiple threads update a common

        byte[] buffer = new byte[1000];
        int numThreads = 10;
        Thread[] threads = new Thread[numThreads];

        // When - multiple threads calling methods simultaneously
        for (int i = 0; i < numThreads; i++) {
            final int threadIndex = i;
            threads[i] = new Thread(() -> {
                for (int j = 0; j < 100; j++) {
                    int offset = threadIndex * 10;

    public Optional<Boolean> alsoMakeDependents() {
        return returnFirstPresentOrEmpty(MavenOptions::alsoMakeDependents);
    }

    @Override
    public Optional<String> threads() {
        return returnFirstPresentOrEmpty(MavenOptions::threads);
    }

    @Override
    public Optional<String> builder() {
        return returnFirstPresentOrEmpty(MavenOptions::builder);
    }

    @Override

                } finally {
                    endLatch.countDown();
                }
            });
        }

        // Start all threads
        startLatch.countDown();

        // Wait for completion
        assertTrue(endLatch.await(30, TimeUnit.SECONDS), "All threads should complete");
        executor.shutdown();

        // Then - All operations should succeed

package org.apache.maven.lifecycle.internal;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * Simple {@link ThreadFactory} implementation that ensures the corresponding threads have a meaningful name.
 */
public class BuildThreadFactory implements ThreadFactory {
    private final AtomicInteger id = new AtomicInteger();

    private static final String PREFIX = "BuilderThread";

     */
    public GenerateThumbnailJob() {
        super();
    }

    /**
     * Sets the number of threads to use for thumbnail generation.
     *
     * @param numOfThreads the number of threads
     * @return this job instance for method chaining
     */
    public GenerateThumbnailJob numOfThreads(final int numOfThreads) {
        this.numOfThreads = numOfThreads;
        return this;
    }

                        }
                    }
                }
            });
        }

        // Start all threads
        for (Thread thread : threads) {
            thread.start();
        }

        // Wait for all threads
        for (Thread thread : threads) {
            thread.join();
        }

        // Verify results
        assertTrue(exceptions.isEmpty());