Trimming

1. What is Trimming?

Trimming automatically cleans the bloated methods and classes of Java bytecode. Trimming incorporates enhanced reflection and dependency analysis to ensure type safety and handle dynamic binding. Trimming does not modify the original source code of the application nor its original pom.xml.

2. Usage

Step 1: DownLoads

Trimming

Step 2: Install

• For windows, run install.bat
• For linux, run install.sh

Step 3: Run

mvn neu.lab:trimming:1.0:debloat

Optional Parameters

Name	Type	Description
entryPointStrategy	String	Trimming offers four entry method strategies for debloating: Main, ProjectCoreMethod, Test, and ProjectCoreMethodAndTest. Default value is: ProjectCoreMethodAndTest

Step 4: Obtain the results

project
├── src
│   ├── test
│   └── main
└── .debloat                                 // result of Trimming
    ├── *-with-dependencies-original.jar     // project original JAR
    ├── *-with-dependencies-debloated.jar    // project debloated JAR
    ├── debloatedResults.html                // Visualization results
    ├── echarts.min.js                       // Visualization library
    └── runResult.log                        

runResult.log

originalSize:44006        // Size:KB
debloatedSize:39154       // Size:KB
runTime:216301            // Time:ms
bloatedClassesSize:3788   
bloatedMethodsSize:18960
testsRun:Tests run: 27, Failures: 0, Errors: 0, Skipped: 0  // After running test cases on the debloated project

3. A demo of Trimming