Why Higher Learning Institution Prefer to Teach Java Than Python

Python and Java are two of the most widely used programming languages. Due to its computability, Java is typically more efficient than Python. Python's syntax is simpler and more succinct than Java's since it is interpreted. Using less code than Java, it can do the same thing. However, large number of students, programmers, professors in most reputable universities spend much time training java.

Much of Java's efficiency is due to its Just-In-Time (JIT) compiler and its ability to handle concurrency. The JIT compiler is a component of the Java Runtime Environment. Compiling byte-codes into native machine code "just in time" to execute Java applications enhances their performance. The Java Virtual Machine (JVM) directly calls the built code. Compiling does not use a lot of resources since the code does not have to be parsed. This could theoretically make a Java program as quick as a native application.

Another reason making java most popular among students looking for programmingassignment help online is due to its user friendliness especially when doing the coding part. Bugs, errors, and all other issues affecting the code are clearly indicated in the runtime, not like in python. Programmer errors in Python are not discovered until the code is executed. This might lead to operational failures and a longer turnaround time, which is not ideal. Object mutation is impossible in Java, although it is feasible in Python. This leads to the creation of secure software. Fixing bugs is an hectic task, that may make programmers and students look for programming help online and bestwebsites offering programming assignment help.

Python may be more flexible and user-friendly than Java, but Java is still the best "formal" language out there. It is statically typed, has all of the OO implementation bells and whistles, and tends to function in a manner that rewards proper program design. That makes it a great choice for teaching at the college and university levels. Computer Science students find it difficult to spend much time in the laptop while avoiding some best moments as a college student. However, with good programmingassignment service, such as ThePandaPapers, students may now get professional help with all sort of programming tasks, may it be java, sql, or python. They have programming assignment experts

Java JSON Web Tokens example

 What is JSON Web Token?

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. For more details, click here.

In this example, User object is encrypted to jwt also validating it and decrypting token to user object again. For complete github source code, click here. 

JwtTokenService.java

Client side load balancing using Eureka and Ribbon

Traditional server side load balancer has some drawbacks. It requires an additional hop from client to load balancer and then load balancer to service. Also there is a burden to run and manage load balancer itself. Client side load balancer is the solution to overcome these problems. In this architecture there is an addition inbuilt load balancer component that resides inside client.

In this example we will see how client side load balancer works with eureka discovery server.

1. When service (discovery client) boots up it registers itself with discovery server. Multiple instances register itself with discovery server. Here spring.application.name is use to identify a particular service

2. Client application will also resister itself to discovery client to find instance for load banacer

3. Now load balancer within client can find the service with the help of service name

Please find complete codes from github repository -

Discovery server code -

https://github.com/madan712/discovery-server

Ribbon service code -

https://github.com/madan712/ribbon-service

Ribbon client code -

https://github.com/madan712/ribbon-client

Server side load balancing using Eureka and Zuul

Routing is an important part of a microservice architecture. In real time cloud application, service instances are added/removed dynamically based on requirement and availability in such scenario its very important to manage traffic load. In the following example you will see how to use Zuul API Gateway to enable sever side load balancing of your RESTful Web Services.

Request flow -

1. When service boots up it registers itself with discovery server. Multiple instances register itself with discovery server. Here spring.application.name is use to identify a particular service

2. Zuul gateway also registers itself with discovery server. Remember Zuul gateway is also a discovery client

3. When client sends request to zuul gateway for a particular service, Zuul gateway queries discovery server to fetch available healthy instance of the service and then accordingly send request to that service.

Please check previous example on Discovery Server.

Discovery code -

https://github.com/madan712/discovery-server

Spring cloud service discovery example

Real time cloud application consist of a large number of micro services communicating with each other. Service instances are added/removed dynamically based on requirement and availability. Service discovery is the process of one service dynamically discovering the network location (IP address and port) of another service without hard coding their location.

Steps involved in service discovery

1. Service registers location - when service boots up it registers itself with discovery server

2. Client looks for service location - When client needs to hit a particular service first it goes to discovery server for its location

3. Discovery server sends back location - Discovery server sends the active location of the particular service

4. Client request service at location - This is a normal request to the service

5. Service sends response - Service responds to client accordingly

Example -

Started eureka server on default port 8761 and Started 2 instances of Application service on 8081 and 8082