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Hutool是一个小而全的Java工具类库，通过静态方法封装，降低相关API的学习成本，提高工作效率，使Java拥有函数式语言般的优雅，让Java语言也可以“甜甜的”。

There is a newer version: 5.8.34

package cn.hutool.core.map;

import java.util.LinkedHashMap;
import java.util.Map;

/**
 * 驼峰Key风格的LinkedHashMap

 * 对KEY转换为驼峰，get("int_value")和get("intValue")获得的值相同，put进入的值也会被覆盖
 *
 * @author Looly
 *
 * @param  键类型
 * @param  值类型
 * @since 4.0.7
 */
public class CamelCaseLinkedMap extends CamelCaseMap {
	private static final long serialVersionUID = 4043263744224569870L;

	// ------------------------------------------------------------------------- Constructor start
	/**
	 * 构造
	 */
	public CamelCaseLinkedMap() {
		this(DEFAULT_INITIAL_CAPACITY);
	}

	/**
	 * 构造
	 *
	 * @param initialCapacity 初始大小
	 */
	public CamelCaseLinkedMap(int initialCapacity) {
		this(initialCapacity, DEFAULT_LOAD_FACTOR);
	}

	/**
	 * 构造
	 *
	 * @param m Map
	 */
	public CamelCaseLinkedMap(Map m) {
		this(DEFAULT_LOAD_FACTOR, m);
	}

	/**
	 * 构造
	 *
	 * @param loadFactor 加载因子
	 * @param m Map，数据会被默认拷贝到一个新的LinkedHashMap中
	 */
	public CamelCaseLinkedMap(float loadFactor, Map m) {
		this(m.size(), loadFactor);
		this.putAll(m);
	}

	/**
	 * 构造
	 *
	 * @param initialCapacity 初始大小
	 * @param loadFactor 加载因子
	 */
	public CamelCaseLinkedMap(int initialCapacity, float loadFactor) {
		super(new LinkedHashMap<>(initialCapacity, loadFactor));
	}
	// ------------------------------------------------------------------------- Constructor end
}