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Write a function to check for valid username

71 freelancer đang chào giá trung bình $17 cho công việc này

$60 USD trong 1 ngày
(177 Đánh Giá)
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 Thêm

$19 USD trong 1 ngày
(116 Đánh Giá)
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 Thêm

$17 USD trong 1 ngày
(68 Đánh Giá)
5.6
$15 USD trong 1 ngày
(79 Đánh Giá)
5.2
$17 USD trong 1 ngày
(13 Đánh Giá)
5.2
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 trong 0 ngày
(14 Đánh Giá)
5.0
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 Thêm

$10 USD trong 1 ngày
(39 Đánh Giá)
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 Thêm

$12 USD trong 1 ngày
(10 Đánh Giá)
4.2
mahmoudgamal008

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

$25 USD trong 0 ngày
(8 Đánh Giá)
3.4
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 Thêm

$111 USD trong 1 ngày
(17 Đánh Giá)
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 Thêm

$15 USD trong 1 ngày
(17 Đánh Giá)
3.6
microservices

A proposal has not yet been provided

$10 USD trong 1 ngày
(17 Đánh Giá)
3.8
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 trong 1 ngày
(5 Đánh Giá)
4.4
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. Thêm

$17 USD trong 1 ngày
(4 Đánh Giá)
3.2
$15 USD trong 1 ngày
(9 Đánh Giá)
3.3
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 trong 1 ngày
(1 Đánh Giá)
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 - Thêm

$10 USD trong 1 ngày
(4 Đánh Giá)
3.2
$20 USD trong 1 ngày
(8 Đánh Giá)
2.4
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 Thêm

$15 USD trong 1 ngày
(1 Đánh Giá)
2.3
Quilance

Oracle Certified Associate, Java SE 8 Programmer Relevant Skills and Experience Oracle Certified Associate, Java SE 8 Programmer Proposed Milestones $15 USD - finish

$15 USD trong 0 ngày
(1 Đánh Giá)
2.0