├── nio/         # NIO file utilities
├── security/    # Security & MessageDigest utilities
├── sql/         # SQL type utilities
├── stream/      # Stream utilities
├── text/        # Text processing (JSON, Tokenizer)
├── timer/       # Timer utilities
├── xml/         # XML processing
├── zip/         # ZIP file utilities
└── CoreLibConstants.java
src/test/java/   # Test classes (mirrors main structure)
```

## Development Commands

```bash

import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.ThreadUtil;
import org.codelibs.core.timer.TimeoutTarget;

/**
 * AccessTimeoutTarget is a class that implements the TimeoutTarget interface.
 * It is used to interrupt a running thread when a timeout occurs.

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import static org.junit.jupiter.api.Assertions.assertNotSame;

import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

/**

	sha256hex := ""

	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
	b.ReportAllocs()
	// the actual benchmark for PutObject starts here. Reset the benchmark timer.

	for i := 0; b.Loop(); i++ {
		// insert the object.
		objInfo, err := obj.PutObject(b.Context(), bucket, "object"+strconv.Itoa(i),

import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.timer.LogNotificationTarget;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;

/**
 * Helper that manages the lifecycle of the log notification timer and

    protected long commandDestroyTimeout = 5 * 1000L;// 5sec

    /** Base directory for command execution. */
    protected File baseDir;

    /** Timer for managing process destruction. */
    private Timer destoryTimer;

    /**
     * Default constructor for CommandGenerator.
     */
    public CommandGenerator() {
        super();
    }

    /**

import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.FesenClient;
import org.codelibs.fess.exception.ContainerNotAvailableException;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.timer.LogNotificationTarget;
import org.codelibs.fess.timer.SystemMonitorTarget;

import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.ScheduledJobException;
import org.codelibs.fess.mylasta.direction.FessConfig;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.helper.LogNotificationHelper;

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.opensearch.client.SearchEngineClient;