In Java, particularly when you are working with String class, you may have a situation where a String object either has a null or empty string. Java treats null and empty as two different values. They both are not equal. In Java, if a reference variable has its value as null, it means that it is not referring to any object. A good example of that kind of reference variable … [Read more...] about Difference Between null and isEmpty in Java
How to Print Welcome Message Before Main Method is Executed in Java
If you want to print a welcome message before the main method is executed in Java, a static block is the best place to do that. What is a static block? A static block is nothing but a code block just like instance block. The static block does not depend on any object. What that means is, even though you make mulitple instances of a class, the static block will be executed only … [Read more...] about How to Print Welcome Message Before Main Method is Executed in Java
Static Block, Instance Block and Constructor: Order of Execution
Overview In Java, we have static block, instance block and constructor which gets executed when we create an instance. All of these blocks can be used to write some initialization logic. Have you ever wondered in what sequence these blocks get executed? First Java looks for the existence of "static blocks". A static keyword is related to the context of the class, so that … [Read more...] about Static Block, Instance Block and Constructor: Order of Execution
How to Make File Explorer Open to This PC instead of Quick Access in Windows 10
Quick Access is really good, you can find all your recently opened files readily shown as soon as you access File Explorer. But the problem is, sometimes it can lead us to embarrassing situations by exposing our private files especially when you have to do a screen share to someone. I would prefer to have the File Explorer open to "This PC" instead of Quick Access. That way … [Read more...] about How to Make File Explorer Open to This PC instead of Quick Access in Windows 10
Arrays.asList in Java Examples
We generally use Arrays.asList method to copy an object array into a List object. It returns a fixed-size List object from the object array that you have passed to this method. Since Arrays.asList method returns a fixed-size List object, you must remember that you cannot add or remove elements from this List object as you would do normally by calling the add method and … [Read more...] about Arrays.asList in Java Examples