ni18 blogs

Java Interview Questions Java is a popular object-oriented programming language that is used worldwide. Here are some common interview questions that you might encounter if you’re applying for a role that requires knowledge of Java. 1. What is Java? Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let application developers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. 2. Explain public static void main(String args[]). This is the main method which is the entry point for any Java program. The keywords have the following meaning: public : It is an access modifier that means the method can be accessed from outside the class. static : It is a keyword which indicates that the method can be called without creating an instance of the class. void

Best JAVA Online Compilers Java, a class-based, object-oriented programming language, is one of the most popular programming languages in use today. It is known for its “write once, run anywhere” capability, meaning that Java code can run on all platforms that support Java without the need for recompilation. For Java developers, online compilers can be a real boon. They allow you to write, compile, and run Java programs directly in your web browser, eliminating the need to install and configure a local development environment. In this article, we will discuss some of the best online Java compilers available today. JDoodle JDoodle is a popular online compiler for Java. It provides a simple, user-friendly interface where you can write your Java code, compile it, and see the output. JDoodle supports multiple Java versions, including Java 8 and Java 11. It also allows you to save and share your programs, making it a great tool for collaborative coding. One of the standout features of JDood

Java: Top 11 Collection API Tricks Java’s Collection API is robust and offers a multitude of methods to manipulate data. Here are the top 11 tricks you can use to get the most out of the Collection API. 1. Creating Immutable Collections Java provides convenient factory methods to create immutable collections. This is useful when you want to create a collection that should not be modified. List<String> list = List.of( "Java" , "Python" , "C++" ); Set<String> set = Set.of( "Java" , "Python" , "C++" ); Map<String, Integer> map = Map.of( "Java" , 10 , "Python" , 20 , "C++" , 30 ); Output: list = [Java, Python, C++] set = [Python, C++, Java] map = {Python=20, C++=30, Java=10} 2. Using the copyOf Method The copyOf method creates a new collection that is a copy of an existing collection. List<String> original = new ArrayList <>(Arrays.asList( "Java" , "Pyth

Java 10: Top 10 Stream API Tricks Java 10 introduced several enhancements to the Stream API which is part of the java.util.stream package. Here are the top 10 tricks you can use to get the most out of the Stream API. 1. Collecting to Unmodifiable List In Java 10, you can collect a stream of elements into an unmodifiable list. This is useful when you want to ensure that the data in your list remains constant and cannot be modified. List<String> list = Stream.of( "Java" , "Python" , "C++" ) .collect(Collectors.toUnmodifiableList()); 2. Take While The takeWhile method is a short-circuiting stateless intermediate operation. It stops processing once the predicate returns false. This is useful when you want to limit the stream to elements that match a given condition. Stream.of( 1 , 2 , 3 , 4 , 5 ) .takeWhile(n -> n < 4 ) .forEach(System.out::println); 3. Drop While The dropWhile method is also a short-circuit