question: void compileClass ( Source javaSource , Source javaClass , String sourcePath , boolean isMake ) throws ClassNotFoundException { try { JavaCompilerUtil compiler = JavaCompilerUtil . create ( getClassLoader ( ) ) ; compiler . setClassDir ( _classDir ) ; compiler . setSourceDir ( _sourceDir ) ; if ( _encoding != null ) compiler . setEncoding ( _encoding ) ; compiler . setArgs ( _args ) ; compiler . setCompileParent ( ! isMake ) ; compiler . setSourceExtension ( _sourceExt ) ; if ( _compiler != null ) compiler . setCompiler ( _compiler ) ; String prefix = _sourceDir . getPath ( ) ; String full = javaSource . getPath ( ) ; String source ; if ( full . startsWith ( prefix ) ) { source = full . substring ( prefix . length ( ) ) ; if ( source . startsWith ( "/" ) ) source = source . substring ( 1 ) ; } else source = javaSource . getPath ( ) ; compiler . compileIfModified ( source , null ) ; } catch ( Exception e ) { log . log ( Level . FINEST , e . toString ( ) , e ) ; throw new CompileClassNotFound ( e ) ; } }
target:  Compile the Java source.  Compile errors are encapsulated in a ClassNotFound wrapper.