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Compiling with a DiagnosticListener

import java.io.IOException; import java.util.Arrays; 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 SecondCompile {   public static void main(String args[]) throws IOException {     JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();     DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();     StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);     Iterable<? extends JavaFileObject> compilationUnits = fileManager         .getJavaFileObjectsFromStrings(Arrays.asList("YourFile.java"));     Iterable<String> options = Arrays.asList("-d", "classes", "-sourcepath", "src");     JavaCompiler.CompilationTask task = compiler.getTask(null, fileManager, diagnostics, options,         null, compilationUnits);     boolean success = task.call();     for (Diagnostic diagnostic : diagnostics.getDiagnostics()) {       System.out.println(diagnostic.getCode());       System.out.println(diagnostic.getKind());       System.out.println(diagnostic.getPosition());       System.out.println(diagnostic.getStartPosition());       System.out.println(diagnostic.getEndPosition());       System.out.println(diagnostic.getSource());       System.out.println(diagnostic.getMessage(null));     }     fileManager.close();     System.out.println("Success: " + success);   } }