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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.lang.mutable;

import java.io.Serializable;

/**
 * 可变 {@code boolean} 类型
 *
 * @see Boolean
 * @since 3.0.1
 */
public class MutableBool implements Comparable, Mutable, Serializable {
	private static final long serialVersionUID = 1L;

	private boolean value;

	/**
	 * 构造，默认值0
	 */
	public MutableBool() {
	}

	/**
	 * 构造
	 * @param value 值
	 */
	public MutableBool(final boolean value) {
		this.value = value;
	}

	/**
	 * 构造
	 * @param value String值
	 * @throws NumberFormatException 转为Boolean错误
	 */
	public MutableBool(final String value) throws NumberFormatException {
		this.value = Boolean.parseBoolean(value);
	}

	@Override
	public Boolean get() {
		return this.value;
	}

	/**
	 * 设置值
	 * @param value 值
	 */
	public void set(final boolean value) {
		this.value = value;
	}

	@Override
	public void set(final Boolean value) {
		this.value = value;
	}

	// -----------------------------------------------------------------------
	/**
	 * 相等需同时满足如下条件：
	 * 
	 * 	非空
	 * 	类型为 MutableBool
	 * 	值相等
	 * 
	 *
	 * @param obj 比对的对象
	 * @return 相同返回true，否则 {@code false}
	 */
	@Override
	public boolean equals(final Object obj) {
		if (obj instanceof MutableBool) {
			return value == ((MutableBool) obj).value;
		}
		return false;
	}

	@Override
	public int hashCode() {
		return value ? Boolean.TRUE.hashCode() : Boolean.FALSE.hashCode();
	}

	// -----------------------------------------------------------------------
	/**
	 * 比较
	 *
	 * @param other 其它 MutableBool 对象
	 * @return x==y返回0，x<y返回-1，x>y返回1
	 */
	@Override
	public int compareTo(final MutableBool other) {
		return Boolean.compare(this.value, other.value);
	}

	// -----------------------------------------------------------------------
	@Override
	public String toString() {
		return String.valueOf(value);
	}

}