Team GyaniPandit

Comments in Java Well, a comment is something that is going to be ignored. This means that whatever comment is there in the program, is going to be ignored. We usually write comments when we have to explain what some line of code does, or if we want some instruction in our program, but we […]

Keywords in Java Well, keywords are such words, which have some special meaning, and are used for some special purpose. These are not used anywhere else, other than where they are meant to be. For example, let’s consider the example of a doctor. Well, we have a cardiologist(related to the heart), a dentist(related to teeth

How to execute a java program without using an IDE To use the terminal, execute the following commands into the terminal. First of all, let’s make sure that our terminal is in the right location(where we need to execute the program) The first instruction on the terminal would be – javac ProgramName.java In the above

Syntax of a Java Program Well, the syntax is nothing but a particular structure of statements that follows inside a program. In short, you can say that syntax is like some structure of a program. Not following the program syntax can result in compilation failures. So, we are now going to see the syntax of

Features of Java Well, java is rich with many interesting features, and we are going to now study some different features related to java. Let’s list them first – Java is simple (easy to learn) Java is secured Java is a platform-independent programming language Java is Portable architecture-neutral Java is an Object Oriented Programming language

Execution Engine Well, after we are done loading the class into the main memory, and the runtime data area is also ready with the details, the next step is to execute the program, which is going to be achieved with the help of the execution engine. Some components from the execution engine include – interpreter

Runtime Data Area So, with this, we can wrap up the class loader thing. The next component of the JVM is the Runtime data area. This also has 5 components, which are as follows – JVM Runtime Data Areas Method area Heap area stack area PC register Native method stack Let’s discuss these components in

ClassLoader Java Well, first let’s consider what is a ClassLoader. Basically, when we are compiling the java source code, it is being converted into a byte code. This .class file is loaded into the memory when we are trying to use the class in our program. This also involves 3 phases, loading, linking, and initialization.

Java Virtual Machine (JVM) We can say that the JVM or Java Virtual Machine, is a part of the Java Runtime Environment. With JVM, we can implement the java application on any platform. So, let’s now see in short, how this all happens. The below image represents the JVM architecture – Java Virtual Machine |

Java Runtime Environment (JRE) JRE, or Java Runtime Environment, as the name suggests, is a software layer, which provides some class libraries, and some resources which are required for running a java program. The Java Runtime Environment comes along with the Java Development Kit when we download it into our systems. The JRE is required