dbmanager.java

图书管理系统 运行环境 windows 2003 windows xp

package com.book.util;

import java.util.Map;

public class DBManager {

	public static Map UserTable;

	public static Map BookTable;

	public static final String DATABASE_USER_TABLE_FILE_NAME = "database.user";

	public static final String DATABASE_BOOK_TABLE_FILE_NAME = "database.book";

	public static void load() {
		try {
			UserTable = Tool.readFile2Memory(DATABASE_USER_TABLE_FILE_NAME);
		} catch (FileReadException e) {
			e.printStackTrace();
		} catch (SplitCharException e) {
			e.printStackTrace();
		}
		try {
			BookTable = Tool.readFile2Memory(DATABASE_BOOK_TABLE_FILE_NAME);
		} catch (FileReadException e) {
			e.printStackTrace();
		} catch (SplitCharException e) {
			e.printStackTrace();
		}
	}

	public static void flush() {
		try {
			Tool.writeMemory2File(DATABASE_USER_TABLE_FILE_NAME, UserTable);
		} catch (FileReadException e) {
			e.printStackTrace();
		} catch (SplitCharException e) {
			e.printStackTrace();
		}
		try {
			Tool.writeMemory2File(DATABASE_BOOK_TABLE_FILE_NAME, BookTable);
		} catch (FileReadException e) {
			e.printStackTrace();
		} catch (SplitCharException e) {
			e.printStackTrace();
		}
	}
}