Java

URL: https://www.progressiverobot.com/inheritance-java-example/ Inheritance in java is one of the core concepts of Object-Oriented Programming. Java Inheritance is used when we have is-a relationship between objects. Inheritance in Java is implemented using extends keyword. Inheritance in Java Inheritance in Java is the method to create a hierarchy between classes by inheriting from other classes. Java Inheritance […]

URL: https://www.progressiverobot.com/java-15-features/ Keeping up with the six-month cycle tradition, after the release of [Java 14](/community/tutorials/java-14-features#5-text-blocks-preview) on March 17, 2020, we now have Java 15, the next non-LTS version rolling out on September 15, 2020. Java 15 Features Here's a quick look at features that are a part of Java 15: Sealed Classes (Preview) – JEP […]

URL: https://www.progressiverobot.com/java-callable-future-example/ Java Callable and Future are used a lot in multithreaded programming. In last few posts, we learned a lot about [java threads](/community/tutorials/multithreading-in-java "Java Thread Tutorial") but sometimes we wish that a thread could return some value that we can use. Java 5 introduced java.util.concurrent.Callable interface in concurrency package that is similar to Runnable […]

URL: https://www.progressiverobot.com/java-listiterator/ As we know Java has four cursors: Enumeration, Iterator, ListIterator, and Spliterator. We have already discussed Enumeration and Iterator cursors in my previous post. Before going through this post, please go through my previous post at: [Java Iterator](/community/tutorials/java-iterator). In this post, we will discuss about third Java cursor: ListIterator. Java ListIterator Like Iterator, […]

URL: https://www.progressiverobot.com/java-reflection-example-tutorial/ Java Reflection provides ability to inspect and modify the runtime behavior of application. Reflection in Java is one of the advance topic of core java. Using java reflection we can inspect a class, [interface](/community/tutorials/interface-in-java "What is Interface in Java – Example Tutorial"), [enum](/community/tutorials/java-enum "Java Enum"), get their structure, methods and fields information at […]

URL: https://www.progressiverobot.com/java-string-copy/ Sometime back I was asked how to copy a String in java. As we know that [String](/community/tutorials/java-string) is an [immutable](/community/tutorials/how-to-create-immutable-class-in-java) object, so we can just assign one string to another for copying it. If the original string value will change, it will not change the value of new String because of immutability. Java […]

URL: https://www.progressiverobot.com/java-unzip-file-example/ Welcome to Java Unzip File Example. In the last post, we learned [how to zip file and directory in java](/community/tutorials/java-zip-file-folder-example), here we will unzip the same zip file created from directory to another output directory. Java Unzip File To unzip a zip file, we need to read the zip file with ZipInputStream and […]