[java] Fix #3701 - fix MissingStaticMethodInNonInstantiatableClass for method local classes

[dykov]

Describe the PR

Fixed MissingStaticMethodInNonInstantiatableClass for method local classes:

public class Foo {
    void method() {

        class InnerClass {
            private InnerClass() {
            }
        }

        InnerClass innerClass = new InnerClass();
    }
}

Related issues

• Fixes [java] MissingStaticMethodInNonInstantiatableClass false positive with method inner classes #3701

Ready?

• Added unit tests for fixed bug/feature
• Passing all unit tests
• Complete build ./mvnw clean verify passes (checked automatically by github actions)
• Added (in-code) documentation (if needed)

[pmd-test]

	1 Message
📖	This changeset changes 0 violations, introduces 0 new violations, 0 new errors and 0 new configuration errors, removes 0 violations, 0 errors and 3 configuration errors. Full report

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[adangel]

Thanks!