Java/JDK 6/Diagnostic

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.rupilationTask 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);
  }
}

Diagnostic Demo

 
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.tools.Diagnostic;
import javax.tools.DiagnosticCollector;
import javax.tools.JavaCompilerTool;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
import javax.tools.JavaCompilerTool.rupilationTask;
public class DiagnosticDemo {
  public static void main(String[] args) {
    String sourceFile = "c:/HelloWorld.Java";
    JavaCompilerTool compiler = ToolProvider.getSystemJavaCompilerTool();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();
    StandardJavaFileManager fileManager =
    compiler.getStandardFileManager(diagnostics);
    List<File> sourceFileList = new ArrayList<File>();
    sourceFileList.add(new File(sourceFile));
    Iterable<? extends JavaFileObject> compilationUnits = fileManager
        .getJavaFileObjectsFromFiles(sourceFileList);
    CompilationTask task = compiler.getTask(null, fileManager, null, null, null, compilationUnits);
    task.run();
    try {
      fileManager.close();
    } catch (IOException e) {
    }
    List<Diagnostic<? extends JavaFileObject>> diagnosticList = diagnostics.getDiagnostics();
    for (Diagnostic<? extends JavaFileObject> diagnostic : diagnosticList) {
      System.out.println("Position:" + diagnostic.getStartPosition());
    }
  }
}