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Is there a way in java we can convert an expression (xml or any other) to logical operations.
for example I have a property
prop01=Achivment:APPCom,done&&TODO:getforecast,!done;Achivement done
is there a way I convert it to java code like
Map userData = getUserData();
Map achivements = userData.get("achivements");
Map TODOs = userData.get("TODOs");
String achiv = achivements.get("APPCom");
String todo = TODOs.get("getforecast");
if(achiv == "done" && todo != "done")
system.out.println("Achivement done"); // part after ; in expression
any third party available for this kind of task?
I don't think this can be done with any third party library directly. You may need to use some library like Antlr to write a translator to translate from your expression to your Java code.
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I am translating from Java to C# and have code similar to:
T[] #unchecked = (T[])Array.newInstance(array.getClass().getComponentType(), sampleSize);
I know getClass() equals to GetType() in C# and newInstance() equals to CreateInstance(); but idk what's the C# equivalent of getComponentType()?
Try this, it will work Array.CreateInstance(array.GetType().GetElementType(), sampleSize);
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I need to validate whether the below json-paths are syntactically correct or not:
$[*].key1.key2[*].key3.key4 // valid
$[*].key1/key2[*].key3"key4 // invalid
Is there any API which can check the above json-path expressions and return true/false in Java ?
Try importing Jayway JsonPath https://github.com/json-path/JsonPath then JsonPath.read("{}", yourJsonPath); and if it doesn't explode the path is valid.
Use a JSON parser like JSON.parse:
function IsJsonString(str)
{
try
{
JSON.parse(str);
}
catch (e)
{
return false;
}
return true;
}
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Given the following code
List<Person> persons = ..;
List<Person> personsWithoutAddress =
persons.stream().filter(p -> p.getAddress() == null)
.collect(Collectors.toList());
is there a way to inline use the method reference Person::getAddress in the filter ( maybe combined with Objects::isNull or with some Guava utility method...) without writing an extra utility method/Predicate ?
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I am looking for Opensource Java library which could help me in expanding all the possible values out of Numeric Regex, for example: if I give a range 1234[7-9] as input, it should output 12347,12348, 12349, similarly taking care of 123[4-6][7-9], which would translate to 12347, 12357, 12367 so on. Instead of reinventing wheel I would like to know if there are any libraries which could do this. This is only for Numeric regex with defined range.
I have once tried out Xeger which was good enough for such simple expressions similar to yours above. You will also need automaton jar package, that you can download as a library in order to use Xeger.
Example how to use:
String regex = "123[4-6][7-9]";
Xeger generator = new Xeger(regex);
Set<String> generated = new HashSet<>();
for (int i = 0; i < 100; i++) {
generated.add(generator.generate());
}
System.out.println(generated);
//[12367, 12348, 12359, 12349, 12357, 12368, 12369, 12347, 12358]
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I was wondering is there a kind of algorithm or pattern which allows you to compare and find similar words
It will be easier if I use example, here it is:
Supposing that we have a strig:
String keywords = "Mummy's girl";
ArrayList = "Mom, cat, dog, girlfriend, house, mum, girls, fire";
I want to get in result those words (cause they're similar or the same in writing) = "Mom, girlfriend, mum, girls, girl"
Your question is little bit unclear. But in java you can use substring function.
String n = in.next();
String a = n.substring(0,3);
Here, a = Mum . Then go through all elements in the arraylist and find the similar word. In substring 0 is starting point and 3 is ending point.