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From "Bartosz Paszkowski (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LANG-1039) HashCodeBuilder.reflectionHashCode(Object object) returns always the same result for any array
Date Mon, 22 Sep 2014 16:22:34 GMT

     [ https://issues.apache.org/jira/browse/LANG-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bartosz Paszkowski updated LANG-1039:
-------------------------------------
    Description: 
HashCodeBuilder.reflectionHashCode(Object object) returns always the same result for any array.
The result is 17.

There is no information in javadoc, that this method works in that way.
The same situation in previous versions.

*Example:*

{code}
public class HashCodeBuilderTest {
    
    public static void main(String[] args) {
        
        System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {1, 1}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {2, 2}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {3, 3}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {4, 4}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Long[] {5L, 5L}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Double[] {null, null}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Object[] {Boolean.FALSE,
1L, null}));
        
    }
}
{code}

*Output:*
{code}
17
17
17
17
17
17
17
{code}



  was:
HashCodeBuilder.reflectionHashCode(Object object) returns always the same result for any array.
The result is 17.

There is no information in javadoc, that this method works in that way.
The same situation in previous versions.
Maybe it is a bug that sould be fixed?

*Example:*

{code}
public class HashCodeBuilderTest {
    
    public static void main(String[] args) {
        
        System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {1, 1}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {2, 2}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {3, 3}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {4, 4}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Long[] {5L, 5L}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Double[] {null, null}));
        System.out.println(HashCodeBuilder.reflectionHashCode(new Object[] {Boolean.FALSE,
1L, null}));
        
    }
}
{code}

*Output:*
{code}
17
17
17
17
17
17
17
{code}




> HashCodeBuilder.reflectionHashCode(Object object) returns always the same result for
any array
> ----------------------------------------------------------------------------------------------
>
>                 Key: LANG-1039
>                 URL: https://issues.apache.org/jira/browse/LANG-1039
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.builder.*
>    Affects Versions: 3.3.2
>         Environment: Windows 7, Java 6
>            Reporter: Bartosz Paszkowski
>
> HashCodeBuilder.reflectionHashCode(Object object) returns always the same result for
any array. The result is 17.
> There is no information in javadoc, that this method works in that way.
> The same situation in previous versions.
> *Example:*
> {code}
> public class HashCodeBuilderTest {
>     
>     public static void main(String[] args) {
>         
>         System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {1, 1}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new double[] {2, 2}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {3, 3}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new int[] {4, 4}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new Long[] {5L, 5L}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new Double[] {null, null}));
>         System.out.println(HashCodeBuilder.reflectionHashCode(new Object[] {Boolean.FALSE,
1L, null}));
>         
>     }
> }
> {code}
> *Output:*
> {code}
> 17
> 17
> 17
> 17
> 17
> 17
> 17
> {code}



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