Help me pls,guys

Question about the task

CRUD

Java Core, Level 7, Lesson 10

Under discussion

What i can do this?

CrUD: Create, Update, Delete.

The program runs with one of the following sets of arguments:
-c name sex bd -u id name sex bd -d id -i id

Argument values:
name (String)
sex ("m" or "f")
bd (birth date in the following format: "04 15 1990")
-c (adds a person with the specified arguments to the end of allPeople; displays the id on the screen)
-u (updates the data of the person with the specified id)
-d (performs the logical deletion of the person with the specified id; replaces all of its data with null)
-i (displays information about the person with the specified id: name sex (m/f) bd (format Apr 15 1990))

The id corresponds to the index in the list.
All the people should be stored in allPeople.
Use Locale.ENGLISH as the second argument for SimpleDateFormat.

Example arguments:
-c Washington m "04 15 1990"

Example output for the -i argument:
Washington m Apr 15 1990

Requirements:

The Solution class must contain a public static List<Person> field called allPeople.
The Solution class must have a static block where two people are added to the allPeople list.
When you start the program with the -c argument, the program should add the person with the specified arguments to the end of the allPeople list and display the id (index).
When you run the program with the -u argument, the program must update the data of the person with the specified id in the allPeople list.
When you run the program with the -d argument, the program must perform the logical deletion the person with the specified id in the allPeople list.
When you run the program with the -i argument, the program should display the data about the person with the specified id in accordance with the format given in the task.

package com.codegym.task.task17.task1710; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Locale; /* CRUD */ public class Solution { public static List<Person> allPeople = new ArrayList<>(); static { allPeople.add(Person.createMale("Donald Chump", new Date())); // id=0 allPeople.add(Person.createMale("Larry Gates", new Date())); // id=1 } public static void main(String[] args) { // TODO DEBUG //System.out.println(allPeople.get(0)); //String name = ""; if (args.length != 0) { switch (args[0]) { case "-c": SimpleDateFormat dateFormat1 = new SimpleDateFormat("MMM dd yyyy", Locale.ENGLISH); Date date1 = new Date (args[3]); if (args[2].equals("m")) { allPeople.add(Person.createMale(args[1], date1)); System.out.println(allPeople.size() - 1); } else if (args[2].equals("f")) { allPeople.add(Person.createFemale(args[1], date1)); System.out.println(allPeople.size() - 1); } break; case "-u": Person person1 = allPeople.get(Integer.parseInt(args[1])); person1.setName(args[2]); SimpleDateFormat dateFormat2 = new SimpleDateFormat("MMM dd yyyy", Locale.ENGLISH); Date date2 = new Date (args[3]); person1.setBirthDate(date2); if (args[3].equals("m")) { person1.setSex(Sex.MALE); } else if (args[3].equals("f")) { person1.setSex(Sex.FEMALE); } break; case "-d": Person person2 = allPeople.get(Integer.parseInt(args[1])); person2.setName(null); person2.setBirthDate(null); person2.setSex(null); break; case "-i": Person person3 = allPeople.get(Integer.parseInt(args[1])); System.out.println(person3); break; default: System.out.println("Error"); break; } } } }

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Ewerton Backend Developer

3 July 2019, 14:55

Condition 3,4: You need to parse that date in the format you specified. You are not using the SimpleDateFormat that you created. Something like:

Date date1 = new SimpleDateFormat("MM dd yyyy",Locale.ENGLISH).parse(args[3]);

Condition 6: you are not printing what it wants. He needs:

Washington m Apr 15 1990

You are printing:

Washington m Apr 15 1990com.codegym.task.task17.task1710.Person@49097b5d

Use the getters.