[PDFBOX-5574] simplify map operations

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0 PDFBox
• Fix Version/s: 3.0.0 PDFBox
• Flags: Patch
• Assignee: Tilman Hausherr
• Reporter: Axel Howind
• Created: 18/Mar/23 09:57
• Updated: 18/Aug/23 05:46
• Resolved: 20/Mar/23 04:22

Description

simplify operations on Map instances:

• avoid unnecessary map.get() calls by iterating over entry sets instead key sets where possible
• avoid accessing the same map entry multiple times by using map.computeIfAbsent(), map.putIfAbsent() etc.
• use bulk operations where possible