Differences between =, equals, and hashcode in Java and the example of rewriting the equals and hashcode methods, using shashcode
1. Override the equals Method Instance part of the code reference http://blog.csdn.net/wangloveall/article/details/78999
Overview:
A.= Can be used for basic types and reference types: when used for basic types, compare whether the values are the same; when used for reference types, compare whether the objects are the same.
B.For string a = "A"; integer B = 1; this
Differences between =, equals, and hashcode in Java and the example of rewriting equals and hashcode (conversion) and mongoshashcodeJava =, equals, hashcode difference and override equals and hashcode method example original address:
2) = and equals in Java, equals in java
= And equals in Java
1. If the Compare object is a value variable: only use = 2. If the Compare object is a reference variable: =: compare whether two references point to the same object instance.
The Equals method in the object class is used to detect whether an object is equal to another object. In the object class, this method determines whether two objects have the same reference, and if two objects have the same reference, they must be
From http://blog.sina.com.cn/s/blog_4a5ca024010008tj.html below is the text
Xiao Cui's translation of Virgo "Equals method and Hashcode method" (2007-06-22-21:04:42
Cui (folk also called Tri, namely CY, see chat Record series), Hunan people, more
.. Net, its string-Specific Resident mechanism ensures that there is only one instance of strings with the same character sequence in the same process, which can avoid repeated instantiation of strings with the same content, to reduce performance
Read Catalogue
An explanation of the Equals () method
Hashcode () method detailed
The close relationship between Hashset, Hashmap, Hashtable and Hashcode () and Equals ()
There are two very important methods in the
Java API and the object classJava API -applicatio (application),Programming (program),Interface (interface)The Java API is the class that is provided to us in the JDK, which encapsulates the underlying code implementation, and we don't need to be
public class TestString {/** Data types in Java can be divided into two categories:* 1, the basic data type, also known as the original data type. Byte,short,char,int,long,float,double,boolean* Compare them, apply the double equals sign (= =),
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.