Java

Algorithm To generate a random string, concatenate characters drawn randomly from the set of acceptable symbols until the string reaches the desired length. Implementation Here’s some fairly simple and very …

Sample query: I came across some Java code that had the following structure: I know that in C++ I can assign a parameter a default value. For example: Does Java …

In this article, we’ll discuss the main difference between an inner class and a static nested class in Java. From the Java Tutorial: Nested classes are divided into two categories: static …

Technically the correct answer is to label the outer loop. In practice if you want to exit at any point inside an inner loop then you would be better off …

What is Java?  Java is the high-level programming language that was developed by James Gosling in the year 1982. It is based on the principles of object-oriented programming and can …

You can do this: This is one of the suggested ways of implementing a generic collection in Effective Java; Item 26. No type errors, no need to cast the array repeatedly. However this …

For example: The toArray() method without passing any argument returns Object[]. So you have to pass an array as an argument, which will be filled with the data from the list and returned. …

From the community documentation: hibernate.hbm2ddl.auto Automatically validates or exports schema DDL to the database when the SessionFactory is created. With create-drop, the database schema will be dropped when the SessionFactory is …

The instance initialiser is just syntactic sugar in this case, right? I don’t see why you need an extra anonymous class just to initialize. And it won’t work if the …

Sample query: How would you initialise a static Map in Java? Method one: static initialiserMethod two: instance initialiser (anonymous subclass) or some other method? What are the pros and cons of each? …

Problem statement: I have installed an application, when I try to run it (it’s an executable jar) nothing happens. When I run it from the commandline with: java -jar “app.jar” …

In Java, the current working directory can be found using the following code: Code : This will print the absolute path of the current directory from where your application was …

Use the put() method to add elements to a HashMap in Java. In this post, we’ll learn more than just how to add elements to a HashMap in Java. How …