A (Domain) exception is defined in the application. A (Lib) exception is defined in the JDK or in a library. An exception can be thrown, thrown from within a catch, or declared in the signature of a method (usually for checked exceptions). Hovering over a number triggers showing code snippets from the application code.

Explicit thrown (throw new...): 328/700
Explicit thrown ratio: 46.9%
Builder thrown ratio: 5.6%
Variable thrown ratio: 47.6%

Caught Exceptions Summary

	Checked	Runtime	Total
Domain	9	6	15
Lib	3	195	198
Total	12	201

A (Domain) exception is defined in the application. A (Lib) exception is defined in the JDK or in a library. An exception can be caught, and it happens that the catch block contains a throw (e.g. for wrapping a low-level exception). Hovering over a number triggers showing code snippets from the application code.

Exception Recast Summary

There is a common practice of throwing exceptions from within a catch block (e.g. for wrapping a low-level exception). The following table summarizes the usage of this practice in the application. The last column gives the number of times it happens for a pair of exceptions. The graph below the table graphically renders the same information. For a given node, its color represents its origin (blue means library exception, orange means domain exception); the left-most number is the number of times it is thrown, the right-most is the number of times it is caught.

Caught / Thrown Exception

Not all exceptions are thrown AND caught in the same project. The following table gives the exceptions types with respect to this. The lower left hand side sell lists all exceptions thrown but not caught (prevalent for libraries), the upper right-hand side lists all exceptions caught but not thrown (usually coming from external dependencies).

Methods called in Catch and Finally Blocks

The following shows the methods that are called inside catch blocks (first column) and finally blocks (second column). For each method, we give the number of times it is called in a catch block (second sub-column), and the total number of calls (third sub-column). If the method name is red, it means that it is only called from catch/finally blocks. Hovering over a number triggers showing code snippets from the application code.

Number of Classes	925
Number of Domain Exception Types (Thrown or Caught)	11
Number of Domain Checked Exception Types	6
Number of Domain Runtime Exception Types	2
Number of Domain Unknown Exception Types	0
nTh = Number of Throw	700
nTh = Number of Throw in Catch	400
Number of Catch-Rethrow (may not be correct)	329
nC = Number of Catch	426
nCTh = Number of Catch with Throw	180
Number of Empty Catch (really Empty)	15
Number of Empty Catch (with comments)	15
Number of Empty Catch	30
nM = Number of Methods	5657
nbFunctionWithCatch = Number of Methods with Catch	360 / 5657
nbFunctionWithThrow = Number of Methods with Throw	358 / 5657
nbFunctionWithThrowS = Number of Methods with ThrowS	299 / 5657
nbFunctionTransmitting = Number of Methods with "Throws" but NO catch, NO throw (only transmitting)	128 / 5657
P1 = nCTh / nC	42.3% (0.423)
P2 = nMC / nM	6.4% (0.064)
P3 = nbFunctionWithThrow / nbFunction	6.3% (0.063)
P4 = nbFunctionTransmitting / nbFunction	2.3% (0.023)
P5 = nbThrowInCatch / nbThrow	57.1% (0.571)
R2 = nCatch / nThrow	0.609
A1 = Number of Caught Exception Types From External Libraries	34
A2 = Number of Reused Exception Types From External Libraries (thrown from application code)	13

nF = Number of Finally	206
nF = Number of Try-Finally (without catch)	30
Number of Methods with Finally (nMF)	206 / 5657 (3.6%)
Number of Finally with a Continue	0
Number of Finally with a Return	0
Number of Finally with a Throw	0
Number of Finally with a Break	0
Number of different exception types thrown	20
Number of Domain exception types thrown	7
Number of different exception types caught	42
Number of Domain exception types caught	8
Number of exception declarations in signatures	327
Number of different exceptions types declared in method signatures	27
Number of library exceptions types declared in method signatures	21
Number of Domain exceptions types declared in method signatures	6
Number of Catch with a continue	1
Number of Catch with a return	156
Number of Catch with a Break	0
nbIf = Number of If	5672
nbFor = Number of For	718
Number of Method with an if	1838 / 5657
Number of Methods with a for	558 / 5657
Number of Method starting with a try	32 / 5657 (0.6%)
Number of Expressions	55419
Number of Expressions in try	7654 (13.8%)

Exception Fact Sheet for "pmd"

Table of contents

Basic Statistics

Exception Hierachy

Exception Map

Exceptions With State

Thrown Exceptions Summary

Caught Exceptions Summary

Exception Recast Summary

Caught / Thrown Exception

Methods called in Catch and Finally Blocks

Reference Table

Miscellanous Metrics