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DoC CompArAto

if(docFee.compareTo(BigDecimal.ZERO)==0)回答:BigDecimal.ZERO = new BigDecimal(new BigInteger(new int[0], 0),0, 0);

java中Comparator接口明明不止一个抽象方法,为什么也何为函数式接口?在注解@FuctionalInterface的javadoc中如下说明:An informative annotation type used to

java Comparator为何是函数式接口?在注解@FuctionalInterface的javadoc中如下说明: An informative annotation type used to indicate that an interface type declaration is intend

compareto比较器怎么用java中的自己能重写要覆写接口中的compare方法 返回值是int型 具体方法自己实现 返回-1 0 或者1

为何java comparator 接口中定义了equals方法?看方法注释吧:Note that it is always safe not to override Object.equals(Object). However,

按理说一个非抽象类实现了一个接口不应该实真是很细心,这个问题从来没有想过 Ojbect类中的equals public boolean equals(Object obj) { return (this == obj);

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