Check warnings

[chcg]

What feature do you want to see added?

There are multiple warnings visible within CI build, see e.g. https://ci.jenkins.io/job/Plugins/job/JiraTestResultReporter-plugin/job/master/51/console

16:36:43 [ERROR] Medium: org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor.templates is a mutable collection which should be package protected [org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor] At JiraTestDataPublisher.java:[line 367] MS_MUTABLE_COLLECTION_PKGPROTECT
16:36:43 [ERROR] Medium: Possible null pointer dereference of jiraPublisherJSON in org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor.validateFieldConfigs(String) [org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor, org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor, org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor] Dereferenced at JiraTestDataPublisher.java:[line 646]Null value at JiraTestDataPublisher.java:[line 636]Known null at JiraTestDataPublisher.java:[line 638] NP_NULL_ON_SOME_PATH
16:36:43 [ERROR] Medium: Redundant nullcheck of uri, which is known to be non-null in org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor.doValidateGlobal(String, String, String) [org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor] Redundant null check at JiraTestDataPublisher.java:[line 544] RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE
16:36:43 [ERROR] Medium: org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor.validateFieldConfigs(String) makes inefficient use of keySet iterator instead of entrySet iterator [org.jenkinsci.plugins.JiraTestResultReporter.JiraTestDataPublisher$JiraTestDataPublisherDescriptor] At JiraTestDataPublisher.java:[line 640] WMI_WRONG_MAP_ITERATOR
16:36:43 [ERROR] High: Private readResolve method in org.jenkinsci.plugins.JiraTestResultReporter.JobConfigMapping$JobConfigEntry not inherited by subclasses. [org.jenkinsci.plugins.JiraTestResultReporter.JobConfigMapping$JobConfigEntry] At JobConfigMapping.java:[lines 118-119] SE_PRIVATE_READ_RESOLVE_NOT_INHERITED
16:36:43 [ERROR] Medium: Exception is caught when Exception is not thrown in org.jenkinsci.plugins.JiraTestResultReporter.TestToIssueMapping.saveMap(Job, HashMap) [org.jenkinsci.plugins.JiraTestResultReporter.TestToIssueMapping] At TestToIssueMapping.java:[line 77] REC_CATCH_EXCEPTION
16:36:43 [ERROR] Medium: Possible null pointer dereference in org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi.doJson(StaplerRequest, StaplerResponse) due to return value of called method [org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi, org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi] Dereferenced at TestToIssueMappingApi.java:[line 53]Known null at TestToIssueMappingApi.java:[line 50] NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE
16:36:43 [ERROR] High: Nullcheck of item at line 53 of value previously dereferenced in org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi.doJson(StaplerRequest, StaplerResponse) [org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi, org.jenkinsci.plugins.JiraTestResultReporter.api.TestToIssueMappingApi] At TestToIssueMappingApi.java:[line 53]Redundant null check at TestToIssueMappingApi.java:[line 55] RCN_REDUNDANT_NULLCHECK_WOULD_HAVE_BEEN_A_NPE
16:36:43 [ERROR] Medium: org.jenkinsci.plugins.JiraTestResultReporter.config.SelectableArrayFields$SelectableArrayFieldsDescriptor.doFillValueItems(String, String, String) might ignore java.lang.Exception [org.jenkinsci.plugins.JiraTestResultReporter.config.SelectableArrayFields$SelectableArrayFieldsDescriptor, org.jenkinsci.plugins.JiraTestResultReporter.config.SelectableArrayFields$SelectableArrayFieldsDescriptor] At SelectableArrayFields.java:[line 164]At SelectableArrayFields.java:[line 164] DE_MIGHT_IGNORE
16:36:43 [ERROR] Medium: Exception is caught when Exception is not thrown in org.jenkinsci.plugins.JiraTestResultReporter.config.SelectableArrayFields$SelectableArrayFieldsDescriptor.doFillValueItems(String, String, String) [org.jenkinsci.plugins.JiraTestResultReporter.config.SelectableArrayFields$SelectableArrayFieldsDescriptor] At SelectableArrayFields.java:[line 164] REC_CATCH_EXCEPTION
16:36:43 [ERROR] Medium: org.jenkinsci.plugins.JiraTestResultReporter.config.UserFields is Serializable; consider declaring a serialVersionUID [org.jenkinsci.plugins.JiraTestResultReporter.config.UserFields] At UserFields.java:[lines 36-70] SE_NO_SERIALVERSIONID
16:36:43 [ERROR] Medium: org.jenkinsci.plugins.JiraTestResultReporter.restclientextensions.FullStatus defines equals but not hashCode [org.jenkinsci.plugins.JiraTestResultReporter.restclientextensions.FullStatus] At FullStatus.java:[lines 48-52] HE_EQUALS_NO_HASHCODE

at least they should be analysed and maybe fixed.

Upstream changes

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Are you interested in contributing this feature?

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[chcg]

Currently open compiler issues from https://ci.jenkins.io/job/Plugins/job/JiraTestResultReporter-plugin/job/master/69/console :

08:24:17  [WARNING] /home/jenkins/agent/workspace/TestResultReporter-plugin_master/src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/config/SelectableArrayFields.java:[169,60] non-varargs call of varargs method with inexact argument type for last parameter;
08:24:17    cast to java.lang.Object for a varargs call
08:24:17    cast to java.lang.Object[] for a non-varargs call and to suppress this warning
08:24:17  [INFO] /home/jenkins/agent/workspace/TestResultReporter-plugin_master/src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/JiraTestAction.java: Some input files use or override a deprecated API.
08:24:17  [INFO] /home/jenkins/agent/workspace/TestResultReporter-plugin_master/src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/JiraTestAction.java: Recompile with -Xlint:deprecation for details.
08:24:17  [INFO] /home/jenkins/agent/workspace/TestResultReporter-plugin_master/src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/JiraTestDataPublisher.java: Some input files use unchecked or unsafe operations.
08:24:17  [INFO] /home/jenkins/agent/workspace/TestResultReporter-plugin_master/src/main/java/org/jenkinsci/plugins/JiraTestResultReporter/JiraTestDataPublisher.java: Recompile with -Xlint:unchecked for details.