It’s Kind of Spontaneous. First, we cannot force garbage collection to run (System.gc()). Sometimes it will but it’s unpredictable. In Java, garbage collection runs automatically in the background, managed by the Java Virtual Machine (JVM). The exact timing of its execution isn’t deterministic and depends on various factors, including: Heap Memory Usage: Garbage collection typically occurs when the JVM detects that the heap memory is running low and needs to free up space. JVM Implementation: Different JVM implementations (like HotSpot, OpenJ9, etc.) have their own algorithms and heuristics for deciding when to run the garbage collector. Garbage Collection Algorithm: The

Download Images with Java Whenever your company gets new software, you’re bound to work overtime as a programmer. The staff figured out that you can load images into the POS software and the sales staff can see the image for each part. Hooray…for them. “This shouldn’t be a problem for you, right Dino? We absolutely need this to work. This would improve sales drastically!” …Right. So I contact the company and ask them if there’s any way to import the images in bulk. They tell me that there is. Apparently you can upload an entire folder into the system. As

Constructing the Java Data Structure Certain data structures in Java can be created by you (yes you). In this example, we’ll go ahead and create an ArrayList data structure that has some of the methods that the built-in ArrayList class has. We’ll create 2 constructors: The default constructor that creates an ArrayList with a default size of 10. Constructor that allows an initial size to be passed to the array. We’ll also create a number of methods: void add(Object x); A method that allows you to place an Object at the end of the ArrayList. void add(int index, Object x); A method that allows

Java’s Data Structure Illustrated One way to get exposure to a specific data structure is to simply read the documentation. But it won’t sink in thoroughly until you create your own example. In this article, we’ll look at the LinkedList class. The phone directory seems to be the example of choice by most college professors to introduce this data structure. Within our phone directory program, we’ll want to be able to: add a new record, delete the current record, change the first name of the current record, change the last name of the current record, change the phone number of the current record,

Solving Anagrams Step by Step I was briefly looking through some sample Computer Science course questions and came upon one that stated: Create an  anagram  program in Java that reads a text file and computes the anagrams of the words. If the words are anagrams of each other, put them on the same line; if they’re not, print each one on a new line. The anagram program should create a new text file. The only data structure that you can use is an array. You must create your own sorting algorithms. This was my solution to it. Make sure to

When to ‘break’ and When to ‘continue’ There are a couple of ways to interrupt a loop: we’ll explore break and continue. break In the following example, a loop-continuation-condition is set to test if the number is less than 20. If true, the number variable will increment by one and the current value of the variable number will be added to the total as is defined by the variable sum. So if we let the following loop continue without any sort of interruption, the number will be 20 and the sum will be 210. However, adding the keyword break after the test is performed within the while loop will cause the loop to