how to load app java classes in javax.tools.JavaCompiler?

[Muhammad Saifuddin]

I have condition on web application where I am upload a .java source file and compiling this source based on the dependencies with jar files resides in WEB-INF/lib folder.

I am able to load this jar file by using this code able to compile successfully and move .class in proper package with the help of this thread.How to set classpath when I use javax.tools.JavaCompiler compile the source?.

File[] javaFiles = new File[]{new File(fileToCompile)}; 
    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); 
 
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>(); 
StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null); 
 
Iterable<? extends JavaFileObject> compilationUnits = fileManager.getJavaFileObjectsFromFiles(Arrays.asList(javaFiles)); 
 
List<String> optionList = new ArrayList<String>(); 
optionList.addAll(Arrays.asList("-classpath", System.getProperty("java.class.path"))); 
fileManager.setLocation(StandardLocation.CLASS_OUTPUT, 
                Arrays.asList(new File(servletContextPath + WEB_CLASSES_PATH))); 
JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager, diagnostics, optionList, null, compilationUnits); 

the only problem I having here when I upload a .java source file which actually have an association with my current application java file comipler didn't find the reference of this source and complaining the error.

Class A implements com.saif.WebDriverEventListener 

package com.saif does not exist.

Any help would be appreciated.
Thanks,