What is Aspect-Oriented Programming(AOP)? By using the diagram below, the concept can be understood in a few seconds. The cross-cutting concerns problem First take a took at the diagram below, and think about what could be the problem. In the diagram above, it is easy to see that log related actions are everywhere. It causes … Read more
Operating System concepts hierarchy diagram. This contains all major topics of this course.
How compiler works is not easy to explain in one sentence. The best way is to use an example. A compiler is a computer program that transforms source code written in a high-level programming language into a lower level language. Basically, a compiler consists the following phases: Lexical Analysis, Syntax Analysis, Semantic Analysis, IR Generation, … Read more
Here are a set of diagrams to illustrate Java String’s immutability. 1. Declare a string The following code initializes a string s. String s = "abcd";String s = "abcd"; The variable s stores the reference of a string object as shown below. The arrow can be interpreted as “store reference of”. 2. Assign one string … Read more