apache / freemarker - Duplication

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

8% duplication:

43,830 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
3,731 duplicated lines

663 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 663 duplicates...

Size	#	Folders	Files	Lines	Code
196	x 2	freemarker-core/src/main...marker/template/utility freemarker-core/src/main...c/main/freemarker/adhoc	StringUtil.java IdentifierCharGenerator.java	971:1224 (15%) 284:537 (53%)	view
69	x 2	freemarker-core/src/main/java/freemarker/ext/dom freemarker-core/src/main/java/freemarker/ext/dom	SunInternalXalanXPathSupport.java XalanXPathSupport.java	55:153 (98%) 51:148 (98%)	view
41	x 2	freemarker-javax-servlet...java/freemarker/ext/jsp freemarker-javax-servlet...java/freemarker/ext/jsp	JspWriterAdapter.java TagTransformModel.java	119:179 (41%) 197:257 (16%)	view
39	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	CommonsLoggingLoggerFactory.java SLF4JLoggerFactory.java	40:104 (79%) 136:200 (38%)	view
33	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	_AvalonLoggerFactory.java _Log4jLoggerFactory.java	40:94 (67%) 40:94 (67%)	view
27	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ParseException.java TokenMgrError.java	596:623 (8%) 74:101 (24%)	view
21	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BuiltInsForSequences.java BuiltInsForSequences.java	1070:1096 (2%) 1150:1176 (2%)	view
17	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BuiltInsForSequences.java BuiltInsForSequences.java	1074:1096 (1%) 1293:1315 (1%)	view
17	x 2	freemarker-core/src/main...marker/template/utility freemarker-core/src/main...marker/template/utility	DateUtil.java DateUtil.java	464:487 (3%) 630:653 (3%)	view
17	x 2	freemarker-core/src/main...marker/template/utility freemarker-core/src/main...marker/template/utility	StringUtil.java StringUtil.java	919:936 (1%) 1292:1309 (1%)	view
17	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	RecurseNode.java VisitNode.java	100:124 (26%) 96:120 (26%)	view
17	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BuiltInsForSequences.java BuiltInsForSequences.java	1154:1176 (1%) 1293:1315 (1%)	view
16	x 2	freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml	_Dom4jNavigator.java _JdomNavigator.java	157:180 (11%) 259:282 (7%)	view
16	x 2	freemarker-core/src/main/java/freemarker/template freemarker-core/src/main/java/freemarker/template	TemplateException.java TemplateException.java	606:629 (5%) 640:663 (5%)	view
15	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	AutoEscBlock.java NoAutoEscBlock.java	54:76 (50%) 54:76 (50%)	view
15	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	MixedContent.java NoAutoEscBlock.java	94:116 (30%) 54:76 (50%)	view
15	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	AutoEscBlock.java MixedContent.java	54:76 (50%) 94:116 (30%)	view
15	x 2	freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml	_Dom4jNavigator.java _DomNavigator.java	179:198 (10%) 264:283 (7%)	view
15	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ElseOfList.java RecoveryBlock.java	32:53 (50%) 29:50 (50%)	view
15	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	SLF4JLoggerFactory.java SLF4JLoggerFactory.java	100:122 (14%) 179:201 (14%)	view
14	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BuiltInsForStringsBasic.java BuiltInsForStringsBasic.java	332:349 (2%) 376:393 (2%)	view
14	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	SLF4JLoggerFactory.java _AvalonLoggerFactory.java	179:200 (13%) 83:104 (28%)	view
14	x 2	freemarker-core/src/main/java/freemarker/ext/beans freemarker-core/src/main/java/freemarker/ext/beans	OverloadedNumberUtil.java OverloadedNumberUtil.java	596:617 (1%) 756:777 (1%)	view
14	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BuiltInsForStringsBasic.java BuiltInsForStringsBasic.java	233:250 (2%) 279:296 (2%)	view
14	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	CommonsLoggingLoggerFactory.java _AvalonLoggerFactory.java	83:104 (28%) 83:104 (28%)	view
14	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	CommonsLoggingLoggerFactory.java SLF4JLoggerFactory.java	83:104 (28%) 100:121 (13%)	view
14	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	AndExpression.java OrExpression.java	58:78 (38%) 58:78 (38%)	view
14	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	SLF4JLoggerFactory.java _AvalonLoggerFactory.java	100:121 (13%) 83:104 (28%)	view
13	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	CommonsLoggingLoggerFactory.java _AvalonLoggerFactory.java	53:73 (26%) 63:83 (26%)	view
13	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	AliasTemplateDateFormatFactory.java AliasTemplateNumberFormatFactory.java	68:82 (43%) 67:81 (43%)	view
13	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	SLF4JLoggerFactory.java _AvalonLoggerFactory.java	149:169 (12%) 63:83 (26%)	view
13	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	SLF4JLoggerFactory.java _Log4jLoggerFactory.java	149:169 (12%) 63:83 (26%)	view
13	x 2	freemarker-core/src/main/java/freemarker/ext/dom freemarker-core/src/main/java/freemarker/ext/xml	NodeOutputter.java _DomNavigator.java	157:173 (8%) 66:82 (6%)	view
13	x 2	freemarker-core/src/main/java/freemarker/log freemarker-core/src/main/java/freemarker/log	CommonsLoggingLoggerFactory.java _Log4jLoggerFactory.java	53:73 (26%) 63:83 (26%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BreakInstruction.java IfBlock.java	42:59 (54%) 101:118 (19%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ContinueInstruction.java FallbackInstruction.java	42:59 (54%) 44:61 (46%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ElseOfList.java ThreadInterruptionSupportTemplatePost...	57:74 (40%) 105:122 (26%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ContinueInstruction.java DebugBreak.java	42:59 (54%) 74:91 (28%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	DebugBreak.java ElseOfList.java	74:91 (28%) 57:74 (40%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ElseOfList.java FlushInstruction.java	57:74 (40%) 45:62 (52%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	FallbackInstruction.java ThreadInterruptionSupportTemplatePost...	44:61 (46%) 105:122 (26%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	DebugBreak.java IfBlock.java	74:91 (28%) 101:118 (19%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BreakInstruction.java FlushInstruction.java	42:59 (54%) 45:62 (52%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	ContinueInstruction.java ElseOfList.java	42:59 (54%) 57:74 (40%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	FallbackInstruction.java IfBlock.java	44:61 (46%) 101:118 (19%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	FlushInstruction.java ThreadInterruptionSupportTemplatePost...	45:62 (52%) 105:122 (26%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	AndExpression.java Range.java	62:78 (33%) 104:120 (18%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	BreakInstruction.java ThreadInterruptionSupportTemplatePost...	42:59 (54%) 105:122 (26%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	IteratorBlock.java IteratorBlock.java	289:302 (3%) 381:394 (3%)	view
12	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	FallbackInstruction.java RecoveryBlock.java	44:61 (46%) 54:71 (40%)	view

Duplicated Units

The list of top 10 duplicated units.

See data for all 10 unit duplicates...

Size	#	Folders	Files	Lines	Code
50	x 2	freemarker-core/src/main/java/freemarker/ext/dom freemarker-core/src/main/java/freemarker/ext/dom	SunInternalXalanXPathSupport.java XalanXPathSupport.java	58:110 54:105	view
11	x 2	freemarker-core/src/main/java/freemarker/ext/dom freemarker-core/src/main/java/freemarker/ext/dom	SunInternalXalanXPathSupport.java XalanXPathSupport.java	141:154 136:149	view
9	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	StopInstruction.java ReturnInstruction.java	44:54 48:58	view
9	x 2	freemarker-core/src/main/java/freemarker/ext/beans freemarker-core/src/main/java/freemarker/ext/beans	EnumerationModel.java IteratorModel.java	65:75 69:79	view
8	x 2	freemarker-core/src/main...marker/template/utility freemarker-core/src/main/java/freemarker/core	TemplateModelUtils.java AddConcatExpression.java	269:280 527:538	view
8	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	TransformBlock.java UnifiedCall.java	146:156 240:250	view
8	x 2	freemarker-core/src/main/java/freemarker/core freemarker-core/src/main/java/freemarker/core	RecoveryBlock.java ElseOfList.java	38:47 41:50	view
8	x 3	freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml	_DomNavigator.java _JdomNavigator.java _Dom4jNavigator.java	321:330 336:345 236:245	view
7	x 2	freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml	_JdomNavigator.java _Dom4jNavigator.java	260:268 158:166	view
7	x 2	freemarker-core/src/main/java/freemarker/ext/xml freemarker-core/src/main/java/freemarker/ext/xml	_JdomNavigator.java _Dom4jNavigator.java	271:279 169:177	view