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i have been trying to connect mysql db with android app, and through json i cannot connect it, is it ok not to use json or use any method without json ?
You never needed JSON. You could use XML instead, or create your own serialized format.
The purpose of using a web API (assuming you are using PHP + MySQL) is that you should not use JDBC directly from the Android app
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How can my Swift and Java programs communicate a value? e.g. Swift puts "hello" to web, java retrieves and prints "hello"
You have to create web service for java program. So you can directly
call java function from any platform. You can use
jersey framework
for creating web service.
This will communicate by JSON Response and JSON Request.
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I want to build a chat Server and client using sockets.
For this first i want to be user login.
I have created a java-bean class and i want to know
How much it is secure to send this java-bean containing username ,email and password to server ?
Unless you use an SSLSocket, its not secure at all. Also it is really not clear what you mean by sending a java bean (Spring, EJB...).
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I have developed a spring application and now I required to develop an android application with the same functionality. Now what i want is to use the same web controller part for sending json object in response with those url mappings.
#james i think you could use ContentNegotiationViewResolver for the type of requirement you have. The proper implementation you can get from this link
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Here is the thing, i want to retrieve some news into my android application which i could find in a json file.
I was thinking about creating some blog(wordpress maybe) and by adding articles, it automatically add it into the json file.
In this way, after relying my app to the json file, all i need to do is adding articles in the blog.
After app started load JSON from server.
Parse it to app content.
Add posibility for manual refresh with SwipeRefreshLayout. https://developer.android.com/reference/android/support/v4/widget/SwipeRefreshLayout.html
If you need your app update JSON automatically, after new post added to blog your should use Google Cloud Messaging. https://developers.google.com/cloud-messaging/?hl=ru
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I am developing a web application to move data from Microsoft SQL Server data to Cloudera Hadoop. Please give Some Suggestions.
So Sqoop2 is being actively developed for this exact purpose. Also, the Hue project has a Sqoop2 app, which uses Sqoop to batch transfer data.