jenkins object model - most important methods

• Job - A job is an runnable entity under the monitoring of Hudson. Every time it "runs", it will be recorded as a Run object.
• getBuilds() - Gets all the builds.  
• getBuildByNumber(int n)
• getFirstBuild() - Returns the oldest build in the record.  
• getLastBuild() - Returns the last build 
• getLastCompletedBuild() - Returns the last completed build, if any. 
• getLastFailedBuild() - Returns the last failed build, if any 
• getLastSuccessfulBuild() - Returns the last successful build, if any 
• isBuildable() - Returns true if we should display "build now" icon 
• AbsractProject
• builds - return builds of project
• doDoWipeOutWorkspace() - delete workspace
• getWorkspace() - get workspace folder
• isBuildable() - Returns true if we should display "build now" icon 
• isBuilding() - Returns true if a build of this project is in progress 
• newBuild() - Creates a new build of this project for immediate execution 
• Project
• FreeStyleProject 

Other

• Run - A particular execution of Job.