pdf xchange c# : Extract data out of pdf file control SDK platform web page wpf windows web browser fb-sdbp-20060-part177

Squashing Bugs 
with Static Analysis
William Pugh
Univ. of Maryland
http://www.cs.umd.edu/~pugh
/
http://findbugs.sourceforge.net
/
SD Best Practices, 
2006
FindBugs
Extract data out of pdf file - extract form data from PDF in C#.net, ASP.NET, MVC, Ajax, WPF
Help to Read and Extract Field Data from PDF with a Convenient C# Solution
pdf form data extraction; export pdf data to excel
Extract data out of pdf file - VB.NET PDF Form Data Read library: extract form data from PDF in vb.net, ASP.NET, MVC, Ajax, WPF
Convenient VB.NET Solution to Read and Extract Field Data from PDF
fill in pdf form reader; extracting data from pdf forms
FindBugs
Open source static analysis tool for finding 
defects in Java programs
Analyzes classfiles
Generates XML or text output
can run in Netbeans/Swing/Eclipse/Ant/SCA
Total downloads from SourceForge: 274,291+
2
C# PDF Text Extract Library: extract text content from PDF file in
class. Able to extract and get all and partial text content from PDF file. Ability to extract highlighted text out of PDF document.
how to extract data from pdf to excel; filling out pdf forms with reader
VB.NET PDF Text Extract Library: extract text content from PDF
NET Programming. Extract and get partial and all text content from PDF file. Extract highlighted text out of PDF document. Image text
exporting pdf data to excel; extract data from pdf c#
What is FindBugs?
Static analysis tool to find defects in Java code
not a style checker
Can find hundreds of defects in each of large apps such 
as Bea WebLogic, IBM Websphere, Sun's JDK
real defects, stuff that should be fixed
hundreds is conservative, probably thousands
Doesn’t focus on security
lower tolerance for false positives
3
C# HTML5 PDF Viewer SDK to view PDF document online in C#.NET
Extract Field Data. Data: Auto Fill-in Field Data. Field: Insert VB.NET convert PDF to text, VB.NET extract PDF pages, VB Support to zoom in and zoom out PDF page
pdf data extractor; extract data out of pdf file
VB.NET PDF- View PDF Online with VB.NET HTML5 PDF Viewer
Extract Field Data. Data: Auto Fill-in Field Data. Field: Insert file & pages edit, C#.NET PDF pages extract, copy, paste Support to zoom in and zoom out PDF page
online form pdf output; pdf form save with reader
Common Wisdom 
about Bugs
Programmers are smart
Smart people don’t make dumb mistakes
We have good techniques (e.g., unit testing, pair 
programming, code inspections) for finding bugs 
early
So, bugs remaining in production code must be 
subtle, and require sophisticated techniques to 
find
4
C# PDF Form Data fill-in Library: auto fill-in PDF form data in C#
Able to fill out all PDF form field in C# RasterEdge XDoc.PDF SDK package provides PDF field processing features for will learn how to fill-in field data to PDF
extract pdf data to excel; extract table data from pdf to excel
C# WPF PDF Viewer SDK to view PDF document in C#.NET
Extract Field Data. Data: Auto Fill-in Field Data. Field: Insert & pages edit, C#.NET PDF pages extract, copy, paste, C# Abilities to zoom in and zoom out PDF page
how to fill in a pdf form in reader; how to fill out pdf forms in reader
Would You Write Code 
Like This?
if (in == null)
try {
in.close();
...
Oops
This code is from Eclipse (versions 3.0 - 3.2)
You may be surprised what is lurking in your 
code
5
VB.NET PDF - View PDF with WPF PDF Viewer for VB.NET
Extract Field Data. Data: Auto Fill-in Field Data. Field: Insert & pages edit, C#.NET PDF pages extract, copy, paste, C# Abilities to zoom in and zoom out PDF page
exporting pdf form to excel; pdf form field recognition
VB.NET PDF- HTML5 PDF Viewer for VB.NET Project
Extract Field Data. Data: Auto Fill-in Field Data. Field: Insert VB.NET convert PDF to text, VB.NET extract PDF pages, VB PDF page and zoom in or zoom out PDF page
collect data from pdf forms; save data in pdf form reader
6
Why Do Bugs Occur?
Nobody is perfect
Common types of errors:
Misunderstood language features,  API methods
Typos (using wrong boolean operator, forgetting 
parentheses or brackets, etc.)
Misunderstood class or method invariants
Everyone makes syntax errors, but the compiler 
catches them
What about bugs one step removed from a syntax error?
VB.NET PDF - WPF PDF Viewer for VB.NET Program
Field Data. Data: Auto Fill-in Field Data. Field: Insert & pages edit, C#.NET PDF pages extract, copy, paste rotate PDF pages, zoom in or zoom out PDF pages and go
how to make a pdf form fillable in reader; how to type into a pdf form in reader
VB.NET PDF File & Page Process Library SDK for vb.net, ASP.NET
Moreover, when you get a PDF document which is out of order, you need to adding a page into PDF document, deleting unnecessary page from PDF file and changing
change font size pdf form reader; extract data from pdf
Bug Patterns
Infinite recursive loop
Student came to office hours, was having trouble 
with his constructor:
/** Construct a WebSpider */
public WebSpider() {
WebSpider w = new WebSpider();
}
A second student had the same bug
Wrote a detector, found 3 other students with 
same bug
8
Double check against JDK
Found 4 infinite recursive loops
Including one written by Joshua Bloch
public String foundType() {
return this.foundType();
}
Smart people make dumb mistakes
Embrace and fix your dumb mistakes
9
0
2
4
6
8
10
12
14
16
18
20
jdk1.0.2
j2sdk1_3_1_03
j2sdk1.4.0-b72
j2sdk1.4.0-b82
j2sdk1.4.1-b06
j2sdk1.4.1-b14
j2sdk1.4.2-b06
j2sdk1.4.2-b14
j2sdk1.4.2-b20
j2sdk1.4.2_04
j2sdk1.5.0-b12
j2sdk1.5.0-b20
j2sdk1.5.0-b28
j2sdk1.5.0-b36
j2sdk1.5.0-b44
j2sdk1.5.0-b51
j2sdk1.5.0-b58
j2sdk1.5.0-b64
jdk1.5.0_04
jdk1.6.0-b13
jdk1.6.0-b17
jdk1.6.0-b26
jdk1.6.0-b30
jdk1.6.0-b34
jdk1.6.0-b38
jdk1.6.0-b42
jdk1.6.0-b46
jdk1.6.0-b50
jdk1.6.0-b54
jdk1.6.0-b58
jdk1.6.0-b62
jdk1.6.0-b66
jdk1.6.0-b70
jdk1.6.0-b74
jdk1.6.0-b78
jdk1.6.0-b82
active
dead
I inform Sun of 
infinite recursive 
loops in their code
JDK build
Infinite Recursive 
Loops: Sun JDK history
Documents you may be interested
Documents you may be interested