Cant find where is mistakes.

Question about the task

CRUD 2

Java Core, Level 7, Lesson 10

Resolved

failing condition 3, 4, 5, 6. if anyone can help.

Batch CrUD: multiple Creations, Updates, Deletions.

The program runs with one of the following sets of arguments:
-c name1 sex1 bd1 name2 sex2 bd2 ... -u id1 name1 sex1 bd1 id2 name2 sex2 bd2 ... -d id1 id2 id3 id4 ... -i id1 id2 id3 id4 ...

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

The id corresponds to the index in the list.
The birth date format is Apr 15 1990.
All the people should be stored in allPeople.
The order in which data is displayed corresponds to the order in which is input.
Be sure the program is thread safe (works correctly with multiple threads without corrupting the data).
Use Locale.ENGLISH as the second argument for SimpleDateFormat.

Example output for the -i argument with two ids:
Washington m Apr 15 1990 Ross f Apr 25 1997

Requirements:

The Solution class must contain a public volatile List<Person> field called allPeople.
The Solution class must have a static block where two people are added to the allPeople list.
With the -c argument, the program must add all people with the specified arguments to the end of the allPeople list, and display the id of each of them.
With the -u argument, the program must update the data of the people with the specified ids in the allPeople list.
With the -d argument, the program must perform the logical deletion of the people with the specified ids in the allPeople list.
With the -i argument, the program should display data about all the people with the specified ids according to the format specified in the task.
The Solution class's main method must contain a switch statement based on args[0].
Each case label in the switch statement must have a synchronization block for allPeople.

package com.codegym.task.task17.task1711; public enum Sex { MALE, FEMALE }

Comments (2)

Popular
New
Old

You must be signed in to leave a comment

Andrei

Level 26 , Liverpool, United Kingdom

29 May 2020, 23:39

I ve done f2 parsing everywhere. still same. case -d is not working as well, but there is now date parsing at all. that is very strange. -c: be sure that all persons added to list -d: be sure that after deleting list size is not changing, same in -i.

Guadalupe Gagnon

Level 37 , Tampa, United States

29 May 2020, 21:02

The code parses the dates incorrectly. They should be parsed with the pattern from f2, not f1. I don't know where f1 came from. Try correcting this and it may pass.