diff --git "a/\351\241\271\347\233\256\344\275\234\344\270\232\357\274\210\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237\357\274\211/\351\202\271\346\265\267\345\205\265/Library.java" "b/\351\241\271\347\233\256\344\275\234\344\270\232\357\274\210\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237\357\274\211/\351\202\271\346\265\267\345\205\265/Library.java"
new file mode 100644
index 0000000000000000000000000000000000000000..d2949470c81ebb01b5e3f06688065c9458502174
--- /dev/null
+++ "b/\351\241\271\347\233\256\344\275\234\344\270\232\357\274\210\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237\357\274\211/\351\202\271\346\265\267\345\205\265/Library.java"
@@ -0,0 +1,138 @@
+import java.util.Scanner;
+
+public class Library {
+	static Scanner sc = new Scanner(System.in);
+	
+	public static void main(String[] args) {
+		
+		String[][] users = new String[100][4];
+		String[][] books = new String[100][5];
+		String[][] pubs = new String[100][4];
+		
+		users[0][0]="软件部";
+		users[0][1]="a";
+		users[0][2]="123";
+		users[0][3]="普通用户";
+		
+		users[1][0]="软件部";
+		users[1][1]="a";
+		users[1][2]="123";
+		users[1][3]="普通用户";
+		
+		
+		while (true) {
+			System.out.println("欢迎来到图书馆");
+			System.out.println("1.登录  2.注册");
+			String key1 = sc.next();
+			switch (key1) {
+			case "1":
+				System.out.println("请输入用户名");
+				String username = sc.next();
+				System.out.println("请输入密码");
+				String password = sc.next();
+				boolean flag = false;
+				for (int i = 0; i < users.length; i++) {
+					if(username.equals(users[i][1]) && password.equals(users[i][2])) {
+						flag = true;
+						break;
+					}
+				}
+				if(flag==true) {
+					System.err.println("登陆成功！");
+					System.err.println(users[index(users)][1]+"s， 欢迎您使用闽大书籍管理系统！！！");
+					System.err.println("请输入数字进行选择：1 图书管理  2 出版社管理  3 退出登录  4 退出系统");
+					String key2=sc.next();
+					switch (key2) {
+					case "1":
+						System.err.println("请输入：1.增加 2.删除 3.更新 4.查询 5.返回上一级菜单");
+						String bottom1 = sc.next();
+							switch (key2) {
+							case "1":
+								System.err.println("请输入图书ISBN:");
+								books[index(users)][0] = sc.next();
+								System.out.println("请输入书名");
+								books[index(users)][1] = sc.next();
+								System.out.println("请输入价格");
+								books[index(users)][2] = sc.next();
+								System.out.println("请输入出版社");
+								books[index(users)][3] = sc.next();
+								System.out.println("请输入作者");
+								books[index(users)][4] = sc.next();
+								System.out.println("添加成功！！！");
+								break;
+							case "2":
+								System.err.println("请输入要删除的书本名称：");
+								books[index(users)][1] = sc.next();
+								break;
+							case "3":
+								System.out.println("请输入ISBN号：");
+								books[index(users)][0] = sc.next();
+ 								System.out.println("请输入书名：");
+								books[index(users)][1] = sc.next();
+								System.out.println("请输入：");
+								books[index(users)][2] = sc.next();
+								break;
+							case "4":
+								
+								break;
+							case "5":
+	
+								break;
+
+							default:
+								System.out.println("输入错误！");
+								break;
+							}
+						break;
+					case "2":
+						
+						break;
+					case "3":
+						
+						break;
+					case "4":
+						System.err.println();
+						System.exit(0);
+						break;
+						
+					default:
+						System.out.println("输入错误！");
+						break;
+					}
+					
+					
+					
+				}else {
+					System.out.println("登录失败！");
+				}
+				
+				break;
+			case "2":
+				System.out.println("请输入所属部门");
+				users[index(users)][0] = sc.next();
+				System.out.println("请输入用户名");
+				users[index(users)][1] = sc.next();
+				System.out.println("请输入密码");
+				users[index(users)][2] = sc.next();
+				System.out.println("注册成功！");
+				break;
+			default:
+				System.out.println("输入错误！");
+				break;
+			}
+			
+		}
+
+	}
+	//找出空余位置
+	public static int index(String[][] users) {
+		int index=-1;
+		for (int i = 0; i < users.length; i++) {
+			if(users[i][1]==null) {
+				index=i;
+			}
+		}
+		return index;
+	}
+	
+}