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Read Excel XLS Files in Java

This tutorial shows how to read Excel .xls files using Java and Apache POI. The Apache POI Project ( provides Java APIs for manipulating file formats based upon the Office Open XML standards (OOXML) and Microsoft’s OLE 2 Compound Document

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Split a String in Java

Java String class has the method split() to split a string around matches of a given regular expression. java.lang.String: public String[] split(String regex) Parameters: regex – the delimiting regular expression Returns: the array of strings computed by splitting this string

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Shuffle an Array or a List in Java

How can we rearrange an array of items in random order? A simple way is to manipulate the array by picking elements randomly. Or we can use Java Collections API. Shuffle an Array Write a loop to go through each

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Interfaces in Java

An interface in Java represents an abstract type; it is a collection of abstract methods and constants. All methods in an interface are abstract, and thus they have only signatures. All variables in an interface are implicitly final and static,

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