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Core Java - Interview Questions and Answers for 'Apache commons' - 2 question(s) found - Order By Newest

 Q1. How to make sure that a string contains only Numerals ?Core Java
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Ans. We can use NumberUtils.isNumber which is a part of apache commons package.

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   Like      Discuss      Correct / Improve     java   apache commons   numberutils   numberutils.isnumber


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 Q2. What is the difference between Java SE Map and Apache Commons MultiMap ? How can we implement functionality similar to multimap using Java SE map ?Core Java2017-07-23 13:21:10

Ans. We can have duplicate keys within MultiMap whereas we cannot have duplicate keys within Java Util Map.

We can have a Map with value as a "collection of values" instead of single value to have a similar function as Multimap.

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   Like      Discuss      Correct / Improve     Apache commons multimap  map vs multimap


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