User on support mail reports, that c:geo crashes as soon as he wants to open his list of stored caches. 02-23 20:38:43.009 17204 17204 E AndroidRuntime: FATAL EXCEPTION: main 02-23 20:38:43.009 17204 ...

java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.base/java.util.TimSort.mergeHi(TimSort.java:903) at java.base/java.util ...

In this blog we will learn about ArrayList. ArrayList is one of the collection class of collection framework. It is a way of storing elements dynamically in an array. It implements the List interface ...

There are many reasons you might find yourself needing to create an image gallery – whether it’s to show off album covers for a music app, to present feature images for articles in a feed, or to ...

To reset ArrayList we have two options, one is to use clear() method and another is to use removeAll(). We dont need to worry if size of the ArrayList is small i.e. 10 to 100. But if ArrayList size ...

Got a selection sort from a previous programming class for plain old arrays that I've been trying to translate to array lists, but I'm missing key info on toArray or an easy way to copy the fields ...

In this final article in the Creating DSLs in Java series, Venkat Subramaniam lets you see for yourself why JVM-compatible languages such as Scala, Groovy, and JRuby are better suited to creating ...

I once attended a Java user group meeting where James Gosling (Java’s inventor) was the featured speaker. During the memorable Q&A session, someone asked him: “If you could do Java over again, what ...