user86894: I would like to know web api provider to validate Mainnet & Testet3 Bitcoin Address. 
How to validate a Bitcoin address is a real one?
Validate bitcoin address from android application
Gone through above references but Want a web service provider or local bitcoinJ type java library class.

user86894: Here are list of references to validate mainnet and testnet Bitcoin addresses:
Offline
IN JAVA
https://rosettacode.org/wiki/Bitcoin/address_validation#Java (mainnet + testnet)
https://github.com/timqi/btc_address_validator/blob/master/BTCAddrValidator.java (mainnet only)
IN GO
https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.go
IN PHP
https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.php
IN RUBY
https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.rb
Online Api
https://blockexplorer.com/api/addr-validate/mjdkX5oxbc9ioTmbnRtc5g4Cojyr5esUuZ (mainnet + testnet)
Note: For around 30 languages we can take benefit of same by following reference:
https://rosettacode.org/wiki/Bitcoin/address_validation

86894: <p>I would like to know web api provider to validate Mainnet &amp; Testet3 Bitcoin Address. </p>

<p><a href="https://bitcoin.stackexchange.com/questions/2564/how-to-validate-a-bitcoin-address-is-a-real-one">How to validate a Bitcoin address is a real one?</a></p>

<p><a href="https://bitcoin.stackexchange.com/questions/13779/validate-bitcoin-address-from-android-application">Validate bitcoin address from android application</a></p>

<p>Gone through above references but Want a web service provider or local bitcoinJ type java library class.</p>
 86894: <h2><strong>Here are list of references to validate mainnet and testnet Bitcoin addresses:</strong></h2>

<h2><strong>Offline</strong></h2>

<p><strong>IN JAVA</strong></p>

<p><a href="https://rosettacode.org/wiki/Bitcoin/address_validation#Java" rel="nofollow noreferrer">https://rosettacode.org/wiki/Bitcoin/address_validation#Java</a> (mainnet + testnet)</p>

<p><a href="https://github.com/timqi/btc_address_validator/blob/master/BTCAddrValidator.java" rel="nofollow noreferrer">https://github.com/timqi/btc_address_validator/blob/master/BTCAddrValidator.java</a> (mainnet only)</p>

<p><strong>IN GO</strong></p>

<p><a href="https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.go" rel="nofollow noreferrer">https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.go</a></p>

<p><strong>IN PHP</strong></p>

<p><a href="https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.php" rel="nofollow noreferrer">https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.php</a></p>

<p><strong>IN RUBY</strong></p>

<p><a href="https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.rb" rel="nofollow noreferrer">https://github.com/niksmac/btc-validate/blob/master/src/btc-validate.rb</a></p>

<h2><strong>Online Api</strong></h2>

<p><a href="https://blockexplorer.com/api/addr-validate/mjdkX5oxbc9ioTmbnRtc5g4Cojyr5esUuZ" rel="nofollow noreferrer">https://blockexplorer.com/api/addr-validate/mjdkX5oxbc9ioTmbnRtc5g4Cojyr5esUuZ</a> (mainnet + testnet)</p>

<p><strong><em>Note:</em></strong> For <strong>around 30 languages</strong> we can take benefit of same by following reference:</p>

<p><a href="https://rosettacode.org/wiki/Bitcoin/address_validation" rel="nofollow noreferrer">https://rosettacode.org/wiki/Bitcoin/address_validation</a></p>
