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I am writing a program with IPOPT in Java and due to the nature of the problem, it is rather difficult to provide a Jacobian matrix.
The question is basically the title:
Is it possible to use IPOPT without Jacobian matrix and if so how?
i couldn't find anything in the documentation, but maybe i am just blind.
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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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I have a main class with over 600 lines code :/ ! my app contains a toolbar,menubar and a field to draw a network nodes
how can I devide my main class and what criteria to choose fo dividing ?
Good evening,
if I understand your question well, I may advice you to read the "Clean Code " of Robert C.Martin. It is a great agile book, that can help your to divide your code.
Good luck
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Hi am new to java is there any other way to find string length pixel without using awt and swing
No. The length depends on how the String is rendered, so obviously only libraries that know how to render a String will be able to tell how big it would be.
It's as if I asked you to tell me the required dimensions if I wrote my username on paper.
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I have this code in Python:
if word[x:x+2] in twowords:
(twowords is a list). I can't figure out how to write in twowords in Java.
It looks like Python uses [x:y] to create a substring. You can use the substring method for that purpose, with the same parameters.
There is no in syntax in Java, but all Lists in Java support the contains method.
Try
if (twowords.contains(word.substring(x, x+2)))
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I'm thinking on possibility of making a Huffman code without "node".
It's based on the nodes then my question seems a bit ambiguous.
I know,maybe we have to use string's abilites ...
Is it possible ? and if "YES" how Is it possible in java?
Thanks.
You can use indices instead of nodes but you need somewhere nodes and/or vertices.