eclipse使用什么算法在Serializable类中生成版本ID?

Pra*_*eek 5 java eclipse serialversionuid

假设这是我的课:

class B implements Serializable {

    private static final long serialVersionUID = -5186261241138469827L; // what algo is used to generate this
     ..........
}
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eclipse使用什么算法生成serialVersionUID = -5186261241138469827L