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What is Clojure? Functional Programming for the Java Ecosystem

Most programming languages are built on procedural programming, but there is this niche of dialects built for “functional programming,” where code classes are dynamically created based on the rules in the functions you write. If you could put languages on a scale of most procedural to most functional, you’d find Clojure sitting at the edge of the latter. What is Clojure? Who uses Clojure? What’s the best Clojure use case?

The Concept Of Null In Java

null is a reserved word (keyword) in Java for literal values. It is a literal similar to the true and false. In Java, null is a keyword much like the other keywords public, static or final. It is just a value that shows that the object is referring to nothing. The invention of the word “null” originated to denote the absence of something. For example, the absence of the user, a resource, or anything.

How to Detect Memory Leaks in Java

One of the most important features of Java is the built-in garbage collector (GC), which automates memory management. The GC is capable of handling the majority of memory leak issues because it implicitly handles memory allocation and freeing. While the GC is capable of handling a significant amount of memory, it does not provide a guaranteed solution to memory leaks. The GC is intelligent, but not without flaws. Even with the most attentive developer's applications, memory leaks can occur.

Switch to JDK 17 + Parallel GC and speed up your Android builds by 9-20%

Speed up Android build times with simple tweaks to the Java Development Kit and Gradle. After benchmarking build times for 3 projects with different JDK versions, JDK 17 is now also preinstalled on all build stacks to help you get the 9-20% speed improvements we did. Learn more and try them!

How to Handle the Clone Not Supported Exception in Java

The CloneNotSupportedException is an exception in Java that is thrown to indicate that the clone() method in class Object was called to clone an object, but that object's class does not implement the Cloneable interface. Applications that override the clone() method can also throw this exception to indicate that an object could not or should not be cloned.

How to Resolve the Instantiation Exception in Java

The InstantiationException is a runtime exception in Java that occurs when an application attempts to create an instance of a class using the Class.newInstance() method, but the specified class object cannot be instantiated. Since the InstantiationException is an unchecked exception, it does not need to be declared in the throws clause of a method or constructor.

How to Fix the Array Index Out Of Bounds Excepiton in Java

The ArrayIndexOutOfBoundsException is a runtime exception in Java that occurs when an array is accessed with an illegal index. The index is either negative or greater than or equal to the size of the array. Since the ArrayIndexOutOfBoundsException is an unchecked exception, it does not need to be declared in the throws clause of a method or constructor.