Jan 10, 2012 · Put your test in the same package, but a different source folder (src/main/java vs. src/test/java) and make those methods package-private. Imo testability is more important than …

Jul 12, 2021 · Java documentation states : "As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects.

Main difference between == and equals in Java is that "==" is used to compare primitives while equals() method is recommended to check equality of objects. String comparison is a common …

How do I get a method's execution time? Is there a Timer utility class for things like timing how long a task takes, etc? Most of the searches on Google return results for timers that schedule

Jul 15, 2009 · I really miss a simple indexOf and contains in java.util.Arrays - which would both contain straightforward loops. Yes, you can write those in 1 minute; but I still went over to …

Aug 29, 2008 · How do I use JUnit to test a class that has internal private methods, fields or nested classes? It seems bad to change the access modifier for a method just to be able to …

Oct 29, 2011 · The keyword break in Java can be used for breaking out of a loop or switch statement. Is there anything which can be used to break from a method?

Reference types in Java allow you to use the special value null which is the Java way of saying "no object". A NullPointerException is thrown at runtime whenever your program attempts to …

A static method belongs to the class itself and a non-static (aka instance) method belongs to each object that is generated from that class. If your method does something that doesn't depend …

Using Java 8 Stream API First we convert String into stream by using method CharSequence.chars(), then we use the method IntStream.range to generate a sequential …