• File size measurements show the distribution of size of files.
• Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
• It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.

• There are 322 files with 29,075 lines of code.
• 2 very long files (2,580 lines of code)
• 4 long files (3,321 lines of code)
• 27 medium size files (7,976 lines of codeclsfd_ftr_w_mp_ins)
• 52 small files (7,185 lines of code)
• 237 very small files (8,013 lines of code)

There are 8 files with lines longer than 120 characters. In total, there are 80 long lines.

File	# lines	# units	# long lines
changes.xml in src/changes	1423	-	56
JDBCLogger.java in contribs/ThomasFenner	279	10	10
manual.xml in src/site/xdoc	963	-	6
HTMLLayout.java in src/main/java/org/apache/log4j	152	11	3
code_example2.java in contribs/ThomasFenner	65	4	2
Log4JTest.java in contribs/ThomasFenner	53	4	1
JDBCAppender.java in contribs/ThomasFenner	327	12	1
building.xml in src/site/xdoc	136	-	1