e.printStackTrace到底在哪能看到的？该如何处理

e.printStackTrace到底在哪能看到的？

public class logManager {

    private static final String TAG = "logManager";        

    private static final int LOG_FILE_MAX_SIZE = 1 * 1024;

    

    public static File getLogFile() {

        String dir = android.os.Environment.getExternalStorageDirectory() + "/Log/";

        String filepath = null;

        

        try {

            File file = new File(dir);

            long size = 0;

            if (!file.exists()) {

                file.mkdir();

            }

            

            filepath = dir + "log01.txt";

            file = new File(filepath);

            if (!file.exists()) {

                file.createNewFile();

                return file;

            }

            else {

                size = file.length();

                if(size >= LOG_FILE_MAX_SIZE) {

                    filepath = dir + "log02.txt";

                    file = new File(filepath);

                    if (!file.exists()) {

                        file.createNewFile();

                        return file;

                    }

                    else {

                        size = file.length();

                        if(size >= LOG_FILE_MAX_SIZE) {

                            filepath = dir + "log01.txt";

                            file = new File(filepath);

                            if(file.exists()) {

                                file.delete();

                            }

                            file.createNewFile();

                            return file;

                        }

                        else {

                            return file;

                        }

                    }