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Month: March 2021

Read Excel XLS Files in Java

By theoryapp Posted on March 20, 2021 Posted in Java Tagged with excel, xls

This tutorial shows how to read Excel .xls files using Java and Apache POI. The Apache POI Project (http://poi.apache.org/) 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

By theoryapp Posted on March 10, 2021 Posted in Java Tagged with string split

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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Google Maps with Polygon and Marker

By theoryapp Posted on March 10, 2021 Posted in Web Tagged with google maps

Google Maps API allows drawing polygons on maps. This demo shows how to build a map with a polygon and a marker altogether. In the HTML page, add a div holding the map. In JavaScript, first provide the marker location …

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Generate Slug URL in MySQL

By theoryapp Posted on March 9, 2021 Posted in MySQL, Web Tagged with seo, slug

A slug is a short name using human-readable keywords to identify a web page. For example, in the following URL the slug is new-york-art-school. This post shows how to automatically generate slug using SQL in MySQL. Suppose we have a …

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