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I have encountered a problem using byte array. The exception it suggested to me that I ought to use Blob in the properties of HttpServletRequest , but I can not find information about this.
The complete package: com.google.appengine.api.datastore.Blob
Can you say I like this class uses? or any web which has examples
There is an example of extracting blobs, I think here.
http://www.programcreek.com/java-api-examples/index.php?api=org.apache.commons.fileupload.FileUpload
I'm not familiar with the datastore, but as far as I know, Blob types are 'just' wrappers for byte arrays.
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I am writing a simple OpcUa client using milo and want to use multi-dimensional arrays as values.
Do I have to create an ExtensionObject to decode my matrix or is there an attribute to store the dimensions in? And if there is such an attribute, how can I access it?
Thanks
Chris
I oversaw the VariableNode.getArrayDimensions() and VariableNode.setArrayDimensions() methods.
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Then how do I create the POJO for such type and how do I use it in retrofit. My JSON response is of this type. This is like an array and i know how to parse only the simple ones.
["a",{"a_id":"1","a":"10","n":"100"},
{"a_id":"2","a":"100","n":"10000"},
{"a_id":"3","a":"500","n":"5000"},
{"a_id":"4","a":"1000","n":"100000"},
{"a_id":"5","a":"5000","n":"500000"}]
For the Pojo Simply use this link http://www.jsonschema2pojo.org/, paste response into, and select Annotation style:Gson, Source type:Json and leave others as default.
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Could I take the control of the buffer (BufferedWriter) to send the data before it is full?
edit: The scenario is that. We put String like "Luck" together with other Strings into the buffer (BufferedWriter), then onto a FileWriter. Well, the BufferWriter holds all the data until is full.
You are probably looking for the flush() method, which does exactly that.
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I have been working on a java algorithm and I want to improve it by allowing it to accept and process very large String values.
Could you suggest me any good ways of storing the input/output results. I've been thinking of writing it on a file with the readLine(), writeLine() methods? Is this a good technique ???
I recommend you to store all your string in a text file (if possible) and use BufferedReader utilities ...
here is the a link to how its done :
https://www.tutorialspoint.com/java/io/bufferedreader_readline.htm
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I am working on encrypting and decrypting of savable data of my application. For that i need to know the strings that saving in my database(I need them exactly just before saving into DB).
How to track that data while before saving ?? any help ??
thanks .
Hinernate supports the concept of interceptors and events. You can use the public boolean onSave(...)
You can do this with the help of Data Access Object design pattern. where u can track data before going to save by implementing your custom function