Architechture 4

 


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Lesson1: JDK, JVM, JRE

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1. Compiler - takes the entire programming code written in high language and translates the whole of it into machine code at once. After this process the an executable file will be ready to run. The translation takes some times to be done, but after that execution is so fast. 2. Interpreter - takes each single instructions of the code translates it and then executes it on its own. The translation step is before the program runs is fast, but execution is slow. JDK = JRE + development tools JRE = JVM + library class JDK -> Java Development Kit. A kit which provides the environment to develop and execute (run) Java program. JRE -> Java Runtime Environment. Provides environment to only run. JVM -> Java Virtual Machine f * Compiled: Fortran, C, C++, Pascal, Haskell, Rust, Go * Interpreted: JavaScript, PHP, Python, Ruby Java both compiled and interpreted language. Terminalda : javac Main.java yazdiqda, source fayli(.java) bytecode(.class) faylina cevirir. Terminalda: java Main (bu z...
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IoC:ApplicationContext, BeanFactory. Bean

 Bean - bean is an instance of a class managed by Spring Boot. In Spring Boot—and the broader Spring Framework—a bean is essentially an object that is managed by the Spring Inversion of Control (IoC) container. Beans are the backbone of a Spring application; they are the components that form the application and are responsible for performing its operations. Key Concepts: Inversion of Control (IoC): Instead of the application code controlling the flow of the program, control is inverted and given to the IoC container. This means the container is responsible for instantiating, configuring, and managing the lifecycle of beans. Dependency Injection (DI): This is a design pattern that allows an object (the client) to receive other objects it depends on (the services) from the IoC container, rather than creating them directly. Defining a Bean: In Spring Boot, you can declare beans in several ways: Using Annotations: @Component : A generic stereotype for any Spring-managed ...
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Preparation for Java interview

Изображение
1.⁠ ⁠Eror ve Exception  2.⁠ ⁠⁠Heap and Stack  3.⁠ ⁠⁠String pool  4.⁠ ⁠⁠Mutable and Immutable class  5.⁠ ⁠⁠Classi nece  Immutible ede bilerik?  6.⁠ ⁠⁠StringBulder vs StringBuffer  7.⁠ ⁠⁠Thread  nece yaradilir?  2.⁠ ⁠⁠checked and anchecked  3.⁠ ⁠⁠exception Handler  4.⁠ ⁠⁠Entity relationships   5.⁠ ⁠⁠Entity fetch Type LAZY and EGAR  5.⁠ ⁠⁠OOP prinsips   6.⁠ ⁠⁠SOLID  7.⁠ ⁠⁠Singlton designs pattern  8.⁠ ⁠⁠Connection pool  8.⁠ ⁠⁠Bulder  9.⁠ ⁠⁠Prox 10.⁠ ⁠⁠Protodtype 11.⁠ ⁠Hansi type  12.⁠ ⁠⁠ArrayList vs LinkedList 13.⁠ ⁠⁠Set and Hashest 14.⁠ ⁠⁠HashMap ve HashTable 15.⁠ ⁠⁠Interface Ve Abstract class ferq 16.⁠ ⁠⁠Java 8 features  17.⁠ ⁠⁠Functional Interface nece yaradilir ve Java 8 de gelen hazir Functional Interfaces 17.⁠ ⁠⁠Stream API, intermadite, terminal, Lazy Intialise 15.⁠ ⁠⁠Spring boot features  16.⁠ ⁠⁠Spring Boot transactions management  17.⁠ ⁠⁠ACID 18.⁠ ⁠⁠Duty read, repeatable read, non-repeatable  19.⁠ ⁠⁠Isolation Levels 4 nov 20.⁠ ⁠⁠propigat...
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