Core java

Java has upgraded its Javadoc for better user interaction and user-experience. It includes a simplified search, HTML generator, Doclet API, etc. What is Javadoc The Javadoc is a tool like javac and a part of JDK. It is used to generate HTML documentation of Java source code. If you ever visit to oracle site you […]

In this post, we will see about @SafeVarargs Annotation in Java 9. The @SafeVarargs is an annotation that is used to perform safe operations. When a method takes variable arguments, then it may cause to unsafe operation, so the @SafeVarargs annotation tells to the compiler to perform safe operations. For example, if we don’t use […]

Type inference is a feature of Java that was introduced in Java 7. Now, Java compiler can infer type of a data automatically. For example, if we create an ArrayList then we use the code like: [crayon-6a29b9c41a872329181301/] You can see that Java 7 allows us to use empty diamond operator to avoid code redundancy. But […]

In this article, we will understand the Java concurrent queue, BlockingQueue. We will then go deep into it’s one of the implementation, ArrayBlockingQueue. What is BlockingQueue BlockingQueue interface was introduced in Java 5 under concurrent APIs and it represents a thread-safe queue in which elements can be added to and removed from. We can have […]

In this topic, we will discuss the private and private static methods inside an interface. interface in Java is a concept which is used to achieve abstraction. In early versions of Java, an interface can contain only abstract methods and constants until Java 8 which allows to add default and static methods as well. In […]

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In this topic, we will learn to get the second last digit of a number with the help of examples. There can be several ways to get second last digit; here we are discussing some solutions. Using modulo operator Here, we are using modulo and divide operators to find the second last digit. The modulo […]

In this post, we will see about Underscore keyword, which is introduced in java 9. Underscore In Java Underscore(_) is a symbol that is used to combine multi-words in a single identifier sometimes refers to a variable in a programming context. In Java, to create a lengthy variable, we prefer to use underscore (_) such […]

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