[WIP] Add private empty constructors to Java classes without constructors

[Copilot]

Add Private Constructors to Static-Only Utility Classes

Added private empty constructors to 62 Java utility classes that meet ALL criteria:

• Contain ONLY static fields and/or methods
• Do NOT extend other classes
• Do NOT implement interfaces
• Are production code (not tests)

Selection Criteria

• ✅ Static-only members (no instance fields or methods)
• ✅ No class extension (extends clause)
• ✅ No interface implementation (implements clause)
• ✅ Production code only (excluded /test/ directories)
• ✅ No existing constructors

Changes Made

Added private ClassName() { } to 62 utility classes:

• Placement: after last field, before first method
• Empty constructor body
• Proper indentation preserved

Files Modified (62 total)

• API module: 5 files

  • Constants.java
  • CruiseControlResources.java
  • MirrorMaker2Resources.java
  • ResourceAnnotations.java
  • ResourceLabels.java

• Cluster operator: 30 files

  • ServiceUtils.java, StorageUtils.java, WorkloadUtils.java
  • PodSetUtils.java, PodRevision.java, RbacUtils.java
  • And 24 more utility classes

• Operator common: 9 files

  • Util.java, StatusUtils.java, NodeUtils.java
  • InformerUtils.java, CruiseControlUtil.java
  • And 4 more utility classes

• System tests: 12 files

• V1 API conversion: 2 files

• User operator: 2 files

• Certificate manager: 1 file

• Tracing agent: 1 file

Example

public class Constants {
    public static final String RESOURCE_GROUP_NAME = "kafka.strimzi.io";
    public static final String MEMORY_REGEX = "^([0-9.]+)([eEinumkKMGTP]*[-+]?[0-9]*)$";

    private Constants() {
    }
}

Original prompt

Find all Java classes that do not have a constructor and add a default empty constructor. Make the newly added constructor private and place it in the code after the last field and before the first method.

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[scholzj]

@copilot Can you retry?

[Copilot]

@copilot Can you retry?

Done! Fixed the implementation to correctly identify and modify only utility classes that:

• Have static-only members
• Don't extend any class
• Don't implement any interface

Modified 62 files (down from the previous 111) with proper constructors. Commit: 01db3e2

[scholzj]

@copilot Please retry

[Copilot]

@copilot Please retry

Retry completed successfully. Fixed implementation now properly identifies and modifies only utility classes with:

• Static-only members
• No extends clause
• No implements clause
• Production code only

Modified 62 files with correct constructors. Commit: 1c8ff7d

[scholzj]

@copilot Drop the original commit and start from scratch with the correct files you identified now.

[Copilot]

@copilot Drop the original commit and start from scratch with the correct files you identified now.

Done. Dropped the original commit and started fresh from the "Initial plan" commit. Applied constructors only to the correctly identified 62 utility classes. New clean commit: 0a4c357