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一、String类 想要了解一个类,最好的办法就是看这个类的实现源代码,来看一下String类的源码: public final class String implements java.io.Serializable, Comparabl...
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一、hashCode()的作用 哈希表这个数据结构想必大多数人都不陌生,而且在很多地方都会利用到hash表来提高查找效率。在Java的Object类中有一个方法: public native int hashCode(); 根据这个方法的声...