Overusing the Static Keyword in Java

The static keyword is often overused in Java and this can lead to several risks, including: To mitigate these risks, it is recommended to use the static keyword sparingly and only when necessary. It’s important to consider the implications of using static and ensure that it does not negatively impact the maintainability, readability, and testability… read more »

How to Use Properly Lambdas in Java

Lambdas are a concise way to define and use functional interfaces in Java. Here are some guidelines on how to use lambdas effectively in Java: Here’s an example that demonstrates the use of a lambda expression in Java: import java.util.Arrays; import java.util.List; public class LambdaExample { public static void main(String[] args) { List<String> names =… read more »

What is a Predicate in Java and How to Use It

In Java, a predicate is a functional interface from the java.util.function package that represents a function that takes in one argument and returns a boolean value. The functional interface is defined as: public interface Predicate<T> { boolean test(T t); } The test() method takes in a single argument of type T and returns a boolean… read more »

How to Add Dependencies in a Maven Project

In Maven, you can manage dependencies using a pom.xml file. Here’s how you can add dependencies to your pom.xml file: That’s it! Your Maven project now has the necessary dependencies to build and run successfully. When you build a Java project with Maven, by default it creates a packaged output called a JAR (Java ARchive)… read more »

What is Polymorphism in Java

Polymorphism in Java is a concept that allows objects of different classes to be treated as if they were of the same type. It allows you to write code that can work with objects of multiple classes, without knowing the specific type of each object at compile time. Polymorphism is implemented in Java through inheritance… read more »

How to Remove Elements from Collections using the removeIf() Method

The removeIf() method is a default method introduced in Java 8 for the Collection interface. It is used to remove all elements from the collection that satisfy a given condition. The removeIf() method takes a Predicate as its argument, which is a functional interface that takes an element of the collection as its input and… read more »

What is the AutoCloseable interface in Java and How to Implement it

The AutoCloseable interface is a functional interface introduced in Java 7 that defines a single method called close(). This interface is used to ensure that resources are closed automatically when they are no longer needed, without the need for manual intervention. In Java, when working with resources such as files, database connections, network sockets, or… read more »

How to Prevent Resources From Leaking in Java

In Java, a resource leak occurs when a program fails to properly release system resources after they are no longer needed. This can lead to a range of problems, such as reduced system performance, increased memory usage, and potential security vulnerabilities. System resources include things like file handles, network sockets, database connections, and other resources… read more »

Reasons to Make Methods Final in Java

Making methods final in Java can provide several benefits, including: However, it’s important to note that marking methods final is not always necessary or appropriate. It should only be used when it makes sense for the specific use case and design of the code. Additionally, marking a method final can limit the flexibility and extensibility… read more »

Security Risks of Serializing and Deserializing Data in Java

Serializing and deserializing data in Java can introduce several security risks if not implemented properly. Here are some of the main risks: To mitigate these risks, it’s important to follow best practices when serializing and deserializing data in Java. These include: By following these best practices, you can help ensure that your Java applications are… read more »