Java tutorial
import javax.tools.Diagnostic; import javax.tools.DiagnosticCollector; import javax.tools.JavaCompiler; import javax.tools.JavaFileObject; import javax.tools.StandardJavaFileManager; import javax.tools.ToolProvider; public class CompileFiles2 { public static void main(String[] args) { JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); DiagnosticCollector<JavaFileObject> dc; dc = new DiagnosticCollector<JavaFileObject>(); StandardJavaFileManager sjfm; sjfm = compiler.getStandardFileManager(dc, null, null); Iterable<? extends JavaFileObject> fileObjects; fileObjects = sjfm.getJavaFileObjects(args); compiler.getTask(null, sjfm, dc, null, null, fileObjects).call(); for (Diagnostic d : dc.getDiagnostics()) { System.out.println(d.getMessage(null)); System.out.printf("Line number = %d\n", d.getLineNumber()); System.out.printf("File = %s\n", d.getSource()); } } }