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Write a function to check for valid username

71 freelanceria on tarjonnut keskimäärin 17 $ tähän työhön

60 $ USD 1 päivässä
(177 arvostelua)
6.6
NovaSofts

Hello Sir We have been working on Freelancer for 2 years and providing the best services to our clients.You can check our profile for checking our expertise.We can provide perfect Quality work. thanks Relevant Skills Lisää

19 $ USD 1 päivässä
(116 arvostelua)
6.5
abedin94

H , this is sid . I am a software engineer for 2 years . i am a pro in the java field . You can give me the project . Its a piece a cake for me . Relevant Skills and Experience J2EE, Java Proposed Milestones $17 USD Lisää

17 $ USD 1 päivässä
(68 arvostelua)
5.6
imanolie

Hi there, I am an experienced java developer. I can do this for you in minutes. Relevant Skills and Experience java Proposed Milestones $20 USD - Project completion

20 $ USD 0 päivässä
(14 arvostelua)
5.0
15 $ USD 1 päivässä
(79 arvostelua)
5.2
17 $ USD 1 päivässä
(13 arvostelua)
5.2
neerajagrawal201

Hi, We are serving in the field of Website & Software Design, HTML, CSS, Java, PHP, C#, javascript, bootstrap, angular.js, .NET, SQL, Biometrics, Android native/hybrid, since 2015. We also started providing service in Lisää

10 $ USD 1 päivässä
(39 arvostelua)
5.0
tgchauhan1711

Hello sir I am expert in java and j2ee and skills you mentioned. Please see my profile and skills. Please give me more details about your project. thank you Relevant Skills and Experience I have 2 year exper Lisää

12 $ USD 1 päivässä
(10 arvostelua)
4.2
anuragiitk

I am an IITK graduate and I have 9 years of experience in software development. I have 100% completion rate and I have finished all the projects with the highest level of customer satisfaction. Relevant Skills and Exp Lisää

111 $ USD 1 päivässä
(17 arvostelua)
5.1
anhnh23

Hi there, I have a bachelor’s degree in Computer Science & I have 5+ years in Java; Solving problem and optimizing system are my passion. Satisfied customers is my key strategy. Relevant Skills and Experience Object-o Lisää

15 $ USD 1 päivässä
(17 arvostelua)
3.6
kbmanoj

I have good exposure in java j2ee development.I would like to take up the task.Thanks! Relevant Skills and Experience java j2ee Proposed Milestones $15 USD - development support

15 $ USD 1 päivässä
(5 arvostelua)
4.4
microservices

A proposal has not yet been provided

10 $ USD 1 päivässä
(17 arvostelua)
3.8
mahmoudgamal008

I have more than 5 years of experience in java and I can do this task right now

25 $ USD 0 päivässä
(8 arvostelua)
3.4
colinxxyy

i can do this for you, check username valid or invalid base on some rules. Relevant Skills and Experience i can do this for you, check username valid or invalid base on some rules. Proposed Milestones $15 USD - 15

15 $ USD 1 päivässä
(1 arvostelu)
3.2
15 $ USD 1 päivässä
(9 arvostelua)
3.3
BhavinJethava

Hi, I have more then 5 years of experience in JAVA,Web technologies like Spring , Hibernate and Desktop application like JAVAFX. Kindly share your requirements in details I will serve you best with my best efforts. Lisää

17 $ USD 1 päivässä
(4 arvostelua)
3.2
mehfuza

Dear Sir, I have done data validation in JavaScript and surely can do this in Java or other language. Relevant Skills and Experience I have experience of programming in Java, C and C++. Proposed Milestones $10 USD - Lisää

10 $ USD 1 päivässä
(4 arvostelua)
3.2
skavras

It is a very simple task and I will do this for you with pleasure. Question: usually such functions are needed in JavaScript not in Java. Do need it in Java exactly? I can both, just need to know :) Relevant Skills an Lisää

15 $ USD 1 päivässä
(1 arvostelu)
2.3
20 $ USD 1 päivässä
(8 arvostelua)
2.4
20 $ USD 1 päivässä
(3 arvostelua)
2.2