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Write a function to check for valid username

write a function to check for null username, special characters, non-printable characters and white space characters in username, and throw appropriate exceptions

Taidot: J2EE, Java

Näytä lisää: write space google drive, winapi check function, write technical white paper, pagerank check function, check hard drive space, php xss check function, onsubmit check function, check special characters flash, javascript age check function, sql2000 date check function

About the Employer:
( 12 reviews ) Sterling, United States

Projektin tunnus: #14671508

70 freelanceria on tarjonnut keskimäärin 17 $ tähän työhön

60 $ USD 1 päivässä
(178 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
15 $ USD 1 päivässä
(79 arvostelua)
5.2
17 $ USD 1 päivässä
(13 arvostelua)
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 0 päivässä
(14 arvostelua)
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 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
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
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
(18 arvostelua)
3.7
microservices

A proposal has not yet been provided

10 $ USD 1 päivässä
(17 arvostelua)
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 1 päivässä
(5 arvostelua)
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. Lisää

17 $ USD 1 päivässä
(4 arvostelua)
3.2
15 $ USD 1 päivässä
(9 arvostelua)
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 1 päivässä
(1 arvostelu)
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
(5 arvostelua)
3.3
sumit4job

I have worked with enterprise application which was developed using java / spring. can fulfill ur requirements very easily

17 $ USD 1 päivässä
(2 arvostelua)
2.8
20 $ USD 1 päivässä
(8 arvostelua)
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 Lisää

15 $ USD 1 päivässä
(1 arvostelu)
2.3