*/classPeople{privateStringname;publicPeople(Stringname){this.name=name;}@Overridepublicbooleanequals(Objectobj){// TODO Auto-generated method stub//如果是自己if(this==obj){returntrue;}//如果是空if(obj==null){returnfalse;}//比较两个People的名字是否相同if(obj!=null&&objinstanceofPeople){if((...
public boolean equals(Object obj) { // TODO Auto-generated method stub return this.name.equals(((People)obj).name) && this.age== ((People)obj).age; } } public class Main { public static void main(String[] args) { People p1 = new People("Jack", 12); System.out.println(p1.hash...
* Class: java_lang_Object * Method: hashCode * Signature: ()I */JNIEXPORTjintJNICALLJava_java_lang_Object_hashCode(JNIEnv*,jobject);/* * Class: java_lang_Object * Method: clone * Signature: ()Ljava/lang/Object; */JNIEXPORTjobjectJNICALLJava_java_lang_Object_clone(JNIEnv*,jobject);/*...
For more information and examples that compute hash codes in a variety of ways, see the Examples section. A hash function must have the following properties: If two objects compare as equal, theGetHashCode()method for each object must return the same value. However, if two objects do not ...
As much as is reasonably practical, the hashCode method defined by classObjectdoes return distinct integers for distinct objects. (The hashCode may or may not be implemented as some function of an object's memory address at some point in time.) ...
hashCode() method 在同一个线程里,hashCode()的返回值必须固定 如果两个实例equals, 那么hashCode()也必须相同. 当改写equals()方法时,也同样需要改写hashCode()方法。 Reference: public boolean equals(Object obj) Indicates whether some other object is "equal to" this one. ...
(object obj) => obj is OrderOrderLine o && Equals(o); public bool Equals(OrderOrderLine other) => OrderId == other.OrderId && OrderLineId == other.OrderLineId; public override int GetHashCode() => HashCode.Combine(OrderId, OrderLineId); } class Program { static void Main(string[]...
除非你的类是final类型并且只是继承至java.lang.Object, 否则lombok会生成一个canEqual方法,这以为着JPA代理仍然可以等于他们的基类,但是添加新状态的子类不会破坏equals契约。下文解释了为什么需要这种方法的复杂原因:How to Write an Equality Method in Java。如果层次结构中的所有类都是scala case类和带有lombok生成的...
HashAlgorithm> element. It defines aDisplayStringclass that includes a private string constant,s, whose value is "This is a string." It also includes aShowStringHashCodemethod that displays the string value and its hash code along with the name of the application domain in which the method is...
A new method added to JaversBuilder public JaversBuilder registerObjectHasher(Class<? extends ObjectHasher> objectHasherType) { objectHasherImplementation = objectHasherType; return this; } Usage https://github.com/javers/javers/blob/master/javers-core/src/test/groovy/org/javers/core/cases/Case1301...