hendy

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 */
package javaapplication1;

import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author t1406g_dtgiang
 */
public class hendy {

    private int ID;
    private String date;
    private double amount;
    private String content;

    int getID() {
        return ID;
    }

    String getdate() {
        return date;
    }

    double getamount() {
        return amount;
    }

    String getcontent() {
        return content;
    }

    void setDate(String date) {
        this.date = date;
    }

    void display() {
        System.out.printf("%-5d%-15s%-10.3f%-10s\n", ID, date, amount, content);

    }

    public hendy() {
    }
    public void setID( int ID){
        this.ID=ID;
    }
    public void setContent( String content){
        this.content=content;
    }
    public void setAmount(double amount){
        this.amount=amount;
    }

    public hendy(int ID, String date, double amount, String content) {
        this.ID = ID;
        this.date = date;
        this.amount = amount;
        this.content = content;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        expense ex = new expense();
        int chose;
        do {
            System.out.println("1.add an expense");
            System.out.println("2.display expense");
            System.out.println("3.delete expense");
            System.out.println("4.exit");
            System.out.println("chose");
            chose = sc.nextInt();
            switch (chose) {
                case 1:
                    ex.input();
                    break;
                case 2:
                    ex.display1();
                    break;
                case 3:
                    System.out.println("enter ID");
                    int tim = sc.nextInt();

                    ex.delete(tim);
                    break;
                case 4:
                    System.exit(4);
                default:
                    System.out.println("Nhap lai");
            }
        } while (true);
    }
}

class expense {

    ArrayList ar = new ArrayList();
    private Object exit;

    void input() {
        int ID=1;
        String date=new String();
        double amount;
        String content;
        Scanner sc = new Scanner(System.in);
        do {

            int check = 1;
            System.out.println("ID " + ID);
            while (check != 0) {
                System.out.println("DATE");
                date = sc.nextLine();
                if (checkdate(date) == 0) {
                 check = 0;
                } else {
                    if (date.equals("exit") == true) {
                        return;
                    } else {
                         check = 1;
                    }
                }
            }
            System.out.println("amount : ");
            amount = sc.nextDouble();


            System.out.println("content :");
            content=sc.nextLine();
            content = sc.nextLine();

            hendy h = new hendy(ID,date,amount,content);
            ar.add(h);
            ID++;

        } while (true);
    }

    void display1() {
        System.out.print("ID     DATE       MOUNT      CONTENT");
        System.out.println("");
        hendy h = new hendy();
        for (int i = 0; i < ar.size(); i++) {
            h = (hendy) ar.get(i);
            h.display();
            System.out.println("");
        }
    }

    int checkdate(String date) {
        hendy h = new hendy();
        if (date.matches("(0[0-9]|[12][0-9]|[3][01])/(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)/[0-9]{4}") == true) {
            return 0;
        } else {
            return 1;
        }
    }
    int searchID(int tim){
        hendy h = new hendy();
        for(int i=0; i<ar.size();i++){
            h= (hendy) ar.get(i);
            if( h.getID() == tim ){
                return i;
            }
        }
        return -1;
    }
    void delete(int tim){
        if(tim == -1)
            System.out.println("k co ID ");
        else{
            ar.remove(searchID(tim));
            System.out.println("ok");
        }
    }
}