import java.util.*;
import java.io.*;

class VectorApp{

	Vector<Info> v = new Vector();

	public VectorApp(){

		Process();

	}//constructor


    public static void main(String args[]){

	 	new VectorApp();

	}//main


	public void Process(){

		try{

			String line="";
			int pick=0;
			Info info;
			Scanner sc = new Scanner(System.in);

			while(true){
				System.out.println("---------------\nadd: Insert Date search(s): Search Data all: Show All write(w): to file quit(q): exit.\n---------------");
				line = sc.next().trim();

				if(line.equalsIgnoreCase("quit") || line.equalsIgnoreCase("q")){

					break;

				}else if(line.equalsIgnoreCase("add") || line.equalsIgnoreCase("a")){ // add

					info = new Info();
					System.out.println("Please input your name:(spaces are not allowed, please use _ instead)");
					//BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
					info.name = sc.next();
					//info.name = br.readLine().trim();
					//System.out.println(info.name);
					//br.close();

					System.out.println("Please input your age:");
					info.age = sc.nextInt();

					System.out.println("Please choose your department:\n1. Logistics Management\n2. Infomation Management\n3. Marketing Management");
					pick = sc.nextInt();
					if(pick==1){
						info.department = "Logistics Management";
					}else if(pick==2){
						info.department = "Infomation Management";
					}else{
						info.department = "Marketing Management";
					}//else

					System.out.println("Please choose your grade:\n1. Freshman\n2. Sophomore\n3. Junior\n4. Senior\n5. Graduate School");
					pick = sc.nextInt();
					if(pick==1){
						info.grade = "Freshman";
					}else if(pick==2){
						info.grade = "Sophomore";
					}else if(pick==3){
						info.grade = "Junior";
					}else if(pick==4){
						info.grade = "Senior";
					}else{
						info.grade = "Graduate School";
					}//else

					v.add(info);

				}else if(line.equalsIgnoreCase("search") || line.equalsIgnoreCase("s")){ // search

					System.out.println("please input the name you are looking for:");
					line = sc.next().trim();
					for(Info inf:v){//對v中的每一個inf
						if(inf.name.equalsIgnoreCase(line)){
							System.out.println(inf.toString());
							break;
						}//if
					}//for
					System.out.println("Not Found");

				}else if(line.equalsIgnoreCase("all")){

					//System.out.println(v.toString());
					for (Info inf:v){
						System.out.println(inf.toString());
					}

				}else if(line.equalsIgnoreCase("write") || line.equalsIgnoreCase("w")){
					BufferedWriter bw = new BufferedWriter(new FileWriter("info.txt"));

					for (Info inf:v){
						bw.write(inf.toString());
						bw.newLine();
					}//for

					bw.flush();
					bw.close();
				}else{

					System.out.println("Wrong instruction, please try again.");
				}

			}//while

			sc.close();

		}catch(IOException e){
			e.printStackTrace();
		}catch(Exception e){
			e.printStackTrace();
		}//catch

	}// Process()


}//VectorApp

class Info{
	String name;
	int age;
	String department;
	String grade;

	Info(){}
	Info(String name, int age, String department, String grade){
		this.name = name;
		this.age = age;
		this.department = department;
		this.grade = grade;
	}//Constructor
	public String toString(){
		return name+"\t"+age+"\t"+department+"\t"+grade;
	}//toString()
}//Info