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This article mainly introduces "Why Java developers choose Go". In daily operation, I believe many people have doubts about why Java developers choose Go. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "why Java developers choose Go". Next, please follow the editor to study!

Why use Go?

Because of the multi-platform garbage collection from Java to Java, once we moved from C to Java, we are now surrounded by a sound Java ecosystem. Still, the advent of containers, the rise of Docker and Kubernetes, suddenly made people discover Go, and you need to know it, like it, and then give up Java.

It won't be that exaggerated, but you'll have another tool, a very convenient tool.

My answer to using Go is simple: simplicity and speed

Next, I'll briefly talk about the advantages of Go and why you should learn Go.

Simplicity and speed

Go and Java have a lot in common:

Family C (commands, curly braces)

Static type

Garbage collection

Memory security (zero reference, runtime boundary check)

Variables are always initialized (zero / zero / false)

Method

Interface

Type assertion (instanceof)

Reflection

However, Go needs cleaner, shorter code in almost every way to achieve the same functionality. See the following code:

Obviously, Go implements the same concurrent threading functionality in Java with several times less code.

Method definition:

Java supports only one return value, and if you need more values, you need to define an Object.

Go supports multiple return values

Func foo () (string, bool) {}

Class:

Java has class

Go has Struct, and Struct does not require getter / setter and toString or equals

Interface:

In Java, we have a specific interface type: interface, and the methods in the interface are specifically implemented by the class that inherits the interface.

Go also has interface functions, but there is no need to explicitly declare the interface implementation in Go, just the structure (that is, the class in Java) to implement the methods in the interface.

Type Shape interface {Print ()} type Rectangle struct {width int height int} func (r * Rectangle) Print () {fmt.println ("Rectangle!");}

The above code is a simple example of using an interface in Go, which is cleaner and more flexible than Java.

Even the for loop is more flexible:

In Java, we use:

For (int I = 0; I < arr.length; iTunes +) {Object b = arr [I]; / /...}

In Go, it's simple like this:

For I, v: = range arr {} / / or I don't need index for v: = range arr {fmt.println ("value=" + v);}

There are many examples to show that Go is easier and faster to write than Java. This is why many companies only need 3 or 5 Go programmers, while Java may need 10 programmers to do the same job.

Is that all?

No, the bigger advantage of Go is performance.

Go is the answer to the question of Google size.

A lot of projects. Thousands of Go programmers. Millions of lines of Go code. Go is the ultimate solution for Google concurrency.

Designed for 1 machine

Daily work runs on thousands of machines

Coordinate work and interact with others in the system

A lot at a time

Go's unique concurrency feature is legendary. The language provides a concurrency model that is different from most mainstream programming languages. Go advocates thinking about concurrency in modern software in different ways. There are many articles on the Internet that compare the performance of Go and Java, and you can refer to it.

Will I completely replace Java with Go?

No, I won't. Java still has many advantages. There are also many differences between Go and Java in terms of language functionality and usage scenarios.

Java has been around for more than 20 years. The programming language has an impact on its function. It has received great support from developers and formed a strong community. They have been developers for some time in the past, but they are an active community to solve your problems. On the other hand, Go has an active community, which is small but growing faster. There are a lot of resources and sample code. If you encounter a problem, it is more likely that if documented, you will find a solution with the help of other developers who have traveled the same path before.

Java provides portability and is specifically designed to be written once and can be run anywhere. JVM interacts with the hardware to make the code work properly in any application. Sometimes it may not be accurate to start the same line of code on any more complex machine. It is the default development language for Android phones.

At this point, the study on "Why Java developers choose Go" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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