equals()只能比较引用类型,无法比较基础类型.equals()方法在顶级父类Object中,代码如下: publicbooleanequals(Object obj){return(this== obj); } 可以看出这个代码就是判断是否是同一对象.那么,当子类重写equals()往往都是将属性内容相同的对象认为是同一对象, 如果子类不直接或间接重写Object的equals()方法,那么调用...
1、hashCode == ->equals true||false (可能真的是同一个对象 可能hashCode冲突) 2、hashCode != ->equals false equals * Indicates whether some other object is "equal to" this one. * * The {@code equals} method implements an equivalence relation * onnon-nullobject references * The {@code...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * Returns the same hash code for the given object as * would be returned by the default method hashCode(), * whether or not the given object's class overrides * hashCode(). * The hash code for the null reference is zero. * * ...
The GetHashCode method for an object must consistently return the same hash code as long as there is no modification to the object state that determines the return value of the object's Equals method. Note that this is true only for the current execution of an application, and that a diffe...
Gets a hash code for this DependencyObject. C# 复制 public override sealed int GetHashCode(); Returns Int32 A signed 32-bit integer hash code. Notes to Inheritors DependencyObject overrides and then seals two Object methods: Equals(Object) and GetHashCode(). The overrides call the Object ...
; public override bool Equals(Object obj) { String s2 = obj as String; if (s2 == null) return false; else return s == s2; } public bool Equals(String str) { return s == str; } public override int GetHashCode() { return s.GetHashCode(); } public override String ToString() {...
CheckEqualsAndHashCodeMethods(String, Object, Object, Boolean) Utility for testing equals() and hashCode() results at once. CheckEqualsAndHashCodeMethods(Object, Object, Boolean) Variant of checkEqualsAndHashCodeMethods(String,Object,Object,boolean. ...
Returns the hash code value for this collection. While theCollectioninterface adds no stipulations to the general contract for theObject.hashCodemethod, programmers should take note that any class that overrides theObject.equalsmethod must also override theObject.hashCodemethod in order to satisfy the ...
Objects.hashCode() is a null-safe method we can use to get the hashcode of an object. Hashcodes are necessary for hash tables and the proper implementation of equals(). The general contract for a hashcode as specified in the JavaDoc is: That the returned integer be the same each time it...
MemberwiseClone Method QueryContract Method RemoteEquals Method RemoteToString Method ArrayContractAdapter(TContract) Properties Learn Previous Versions Visual Studio ArrayContractAdapter(TContract) Class ArrayContractAdapter(TContract) Methods ArrayContractAdapter(TContract) Methods C#...