Shulou(Shulou.com)06/02 Report--

This article introduces you what are the characteristics of C# and Java, the content is very detailed, interested friends can refer to, hope to be helpful to you.

Before giving you a detailed introduction to the features of C # and Java, let you first get an overview of the C # and .NET platforms, and then give a comprehensive introduction to the features of C # and Java.

Many people say that C# is a weapon used by Microsoft to compete with Java, because the two are strikingly similar to each other, but there are many differences between the two, as the so-called "subtle differences". So what are the similarities and differences between the two? Starting from today, we will compare the characteristics of C# and Java from various angles, hoping to be helpful to those who are learning and using C#.

1. An overview of the C# and .NET platforms

In June 2000, Microsoft released the C # language and the .NET platform. C # language is a strongly typed, object-oriented language, which has the characteristics of simple syntax and strong expression, while the .NET platform is the cornerstone of Microsoft's .NET Project.

The core of the .NET platform includes two aspects. On the one hand, it is the famous Universal language Runner (Common Language Runtime). Although the term is a bit obscure, you can compare it with Java's virtual machine, and the two accomplish roughly the same task. On the other hand, there are a lot of general-purpose libraries that can be called by multiple languages and compiled to produce a common intermediate language (Intermediate Language), which can also be compared to the bytecode of Java, albeit in a different way.

2. Characteristics of C# and Java

The following is a brief list of the similarities between C# and Java, although we focus on the differences between C# and Java here, it is also necessary to understand the similarities between them.

Both are compiled into cross-platform, cross-language code, and the code can only run in a controlled environment for automatic garbage collection, and eliminates pointers (pointers can be used in C #, but the unsafe keyword must be noted) neither requires a header file, all code is limited to a certain range by the "package", and because there is no header file So it eliminates the circular dependency of class definition that all classes are derived from objects, and must use the New keyword to allocate memory and use object locking to support the concept that multithreads have interfaces (interface).

Inner class

When ◆ inherits a class, it does not inherit with a specific access right

◆ does not have global functions or constants, everything must belong to the class

◆ arrays or strings have their own length calculation and boundary checking

◆ only uses "." Operator, without "- >" and "::"

◆ "null", "boolean" and "bool" become keywords

Any variable in ◆ is initialized before use.

◆ cannot use integers to return to if conditional statements, it must use Boolean values

◆ "Try" module can be followed by "finally"

So much for sharing about the characteristics of C # and Java. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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