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Finding unused variables in java through code

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Finding unused variables in java through code

codequest	7 Aug, 2008 - 03:18 AM Post #1
New D.I.C Head Joined: 7 Aug, 2008 Posts: 1	Hi All, I am planning to create a project analyzer tool which will find the unused variables and functions present in the java project and list it out. Please give me your valuable suggestions how i can go about it. How we can find the variables in the java program by parsing through the file. Thanks, CodeQuest
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1lacca	RE: Finding Unused Variables In Java Through Code 7 Aug, 2008 - 03:55 AM Post #2
code.rascal Joined: 11 Aug, 2005 Posts: 3,822 Thanked: 12 times My Contributions	You write a parser against the Java language specification. Or use something that is already there, like ANTLR or the built-in things in NetBeans, Eclipse or some other popular open source IDE / framework. However once a project uses reflection to call methods and access variables, it becomes pretty much impossible to create such a tool...
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potator	RE: Finding Unused Variables In Java Through Code 8 Aug, 2008 - 08:58 PM Post #3
D.I.C Head Joined: 2 Dec, 2007 Posts: 78 Thanked: 1 times Dream Kudos: 175 My Contributions	One solution: 1) search the file for variable declaration. 2) search subsequent code for references to the same object. It's basically a searching problem.
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jTopcoder	RE: Finding Unused Variables In Java Through Code 14 Sep, 2008 - 01:23 PM Post #4
New D.I.C Head Joined: 14 Sep, 2008 Posts: 1	There is a similar tool: UCDetector I think this tool is limited to Eclipse IDE and uses the internal eclipse parser. Here the description from the homepage: UCDetector (Unecessary Code Detector) is a Open Source eclipse PlugIn Tool to find unecessary (dead) java code. It also tries to make code final, protected or private. UCDetector also finds cyclic dependencies between classes.
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