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| package frame.file.office;
|
| import org.apache.log4j.Logger;
|
| public class Engine {
|
| private static Engine instance;
| private static Object locker = new Object();
| private Logger logger;
| private ExcelLoader excelLoader;
|
|
| private Engine() {
| excelLoader = new ExcelLoader(logger);
|
| }
|
| public static Engine getInstance() {
| lock (locker) {
| if (instance == null) {
| instance = new Engine();
| }
|
| return instance;
| }
| }
|
| }
|
|
