Sort and join equivalent of JS to Java

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I know the question is probably very early but they would help me a lot by telling me equivalents of those priorities or methods (I really do not know what they are) in java, thanks.

    
asked by Victor 26.08.2018 в 23:48
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To order maybe I'll serve you is 

Arrays.sort(array);

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and to do the join you can use the function of the class 

String.join(",", ListOfElements)
    
answered by 27.08.2018 в 06:40
date date ("y, m, d) pass it to month How to use a variable or object, in several class or activitys?