integer « hashcode « Java Class Q&A

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Java Class Q&A » hashcode » integer

1. Why hashCode() returns the same value for a object in all consecutive executions? stackoverflow.com

I am trying some code around object equality in java. As I have read somewhere

hashCode() is a number which is generated by applying the hash function. Hash Function ...

2. What happens to identity-hashcode when there are more objects than `int` can hold? stackoverflow.com

The method System.identityHashCode(...) is called that way, because it identifies objects, so two distinct objects can't have same identity-hashcode, right? It returns an int. But what happens, on a system with huge ...

3. How to solve the problem: int cannot be dereferenced stackoverflow.com

Here I have some value which two of them are integer and I can't call a method on them since they are not reference. How can I solve this?

String srcAddr, dstAddr, ...

4. will hashcode return different int due to cmpaction of tenure space? stackoverflow.com

If I call hashcode() method on some oject it returns the internal address of the object(default implementation) . Is this address logical one or physical address. In garbage collection, due ...

5. Why Object#hashCode() returns int instead of long stackoverflow.com

why not:

public native long hashCode();

instead of:

public native int hashCode();

for higher chance of achieving unique hash codes?

6. How default .equals and .hashCode will work for my objects? stackoverflow.com

Say I have my own object public class MyObj { ... } It has some attributes and methods. It DOES NOT implement equals, DOES NOT implement hashCode. Once we call equals and hashCode, what ...

7. Does Hashcode equality imply refer reference based equality? stackoverflow.com

I read that to use equals() method in java we also have to override the hashcode() method and that the equal (logically) objects should have eual hashcodes, but doesn't that imply ...

8. Why return type of hashCode() method of Object class is int not long !!!! forums.oracle.com

The hashcode of an object has nothing to do with memory addresses. It's simply for data structures that use hashing (like HashMap, HashSet, etc.). If you put several objects with the same hashcode into a hashing data structure, they will simply be put to the same "bucket". True, the performance of those data structures is poor if all the elements have ...