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Java 与 C#

Java 与 C#

Java is a dynamic, secured and class based high level object oriented programming language developed by Oracle Corporation. On the other hand; C# is a .Net Framework object oriented programming language developed by Microsoft.

Java和C#都是通用的编程范式，或者基本上被称为命令式编程环境。而且这两种语言都能够提供一些高级结果作为输出。

In a broad view there are many differences between these two OOPs −

  • Java Runtime Environment旨在运行Java代码，而C#运行在CLR环境（公共语言运行时）。

  • Java和C#都是面向对象的编程语言。但是在特定的方式上，C#是一种功能和组件导向的强类型编码语言。这种语言提供了多重重载的特性，而这是Java所没有的。

  • 这两者的Array特性也不相同。对于Java来说，Object是直接的专门化，而对于C#来说，Array是系统的专门化。

Use of C# -

  • Web app. Development

  • Windows application development.

  • Gaming application.

使用Java -

  • Web项目，大数据应用

  • Server-side programming

  • Embedded systems

  • Android应用程序

Java和C#语言的工作原理：

Java

In a software designing environment, it is important to have a runtime platform. The runtime platform provides the access to main memory and other important features of a system to run a code.

Java运行时环境（Java Runtime Environment）是一种基本的后端技术，它在Java构建代码和操作系统之间建立并创建通信渠道。简单来说，JRE是一个运行时工具，它提供了编写Java代码并运行以获得所需结果的所有资源。

There are two Java components −

  • JDK – Java开发工具包

    • A collection of software development tools to develop an application using Java. You can get many JDK version in matching with its Java version. Like, Java SE needs JDK Java SE.

  • JVM – Java Virtual Machine

    • JVM逐行运行Java代码。当Java应用程序运行时，开发人员配置设置。它还通过使用运行时检查正在运行的Java应用程序的内部存储。

C#

的中文翻译为：

C#

Basically, the .NET build codes compile into a Microsoft Intermediate Language aka MSIL by using Just in Time (JIT) compiler. Clearly, the output will be a machine code (written by a set of class libraries) and it will be produced by a machine processor.

The compiler and the CLR format the C# code to an executable code. Here we get an understanding complex machine environment in .NET. The executable codes can be saved as .exe and .dll files for Windows operating system.

A Java Code Algorithm:-

的中文翻译为：

一个Java代码算法：

  • 第一步 - 在IDE中编写源代码。

  • Step 2 − Put It Into The Compiler.

  • 步骤3 - 将其转换为字节码。

  • 步骤 4 − JVM（Windows，MacOS，Linux）。

  • Step 5 − Converted Machine Code.

  • 步骤 6 − 终止进程

A C# Code Algorithm:-

  • Step 1 − Start.

  • Step 2 − Select The Documents.

  • 第三步 - 指令部分。

  • Step 4 − Select Interface.

  • 第五步 - 选择课程。

  • 第6步 - Main()方法声明。

  • 步骤 7 - 没有头文件，导入 .dll 文件。

  • 第8步 - 输入反射

Java代码的语法

public class Main {
   public static void main (String[] args) {
      System.out.println ("THE STATEMENT");
   }
}

Syntax

using System;

namespace Tutorialspoint {
  class Program{
      static void Main(string[] args){
         Console.WriteLine("Hello Student");    
    }
  }
}

The class using system declares the system namespace. The namespace organises the code as a container. Every line of the written code that runs, must be stay inside a class in C# language.

Approach

  • Approach 1: A General Example of a Java Code.

  • 方法二：C#代码的通用示例。

一个Java代码的一般示例

Example 1

public class TableofMultiplication {
   public static void main(String[] args) {

      int num = 18, j = 1;
      while(j <= 20){
         System.out.printf("%d * %d = %d \n", num, j, num * j);j++;
      }
   }
}

输出

18 * 2 = 36 
18 * 3 = 54 
18 * 4 = 72 
18 * 5 = 90 
18 * 6 = 108 
18 * 7 = 126 
18 * 8 = 144 
18 * 9 = 162 
18 * 10 = 180 
18 * 11 = 198 
18 * 12 = 216 
18 * 13 = 234 
18 * 14 = 252 
18 * 15 = 270 
18 * 16 = 288 
18 * 17 = 306 
18 * 18 = 324 
18 * 19 = 342 
18 * 20 = 360

A General Example of A C# Code

Example 1

using System;  
public class Exercise6  {  
   public static void Main() {
      int i,n;
   
	   Console.Write("\n\n");
       Console.Write("Display the multiplication table of the number:\n");
       Console.Write("-----------------------------------");
       Console.Write("\n\n");   

       Console.Write("Input the number you need to do multiplication: ");
       n= Convert.ToInt32(Console.ReadLine());   
       Console.Write("\n");
       for(i=1;i<=100;i++){
          Console.Write("{0} X {1} = {2} \n",n,i,n*i);
       }
   }
}

输出

Display the multiplication table of the number:
-----------------------------------

Input the number you need to do multiplication:
0 X 1 = 0 
0 X 2 = 0 
0 X 3 = 0 
0 X 4 = 0 
0 X 5 = 0 
0 X 6 = 0 
0 X 7 = 0 
0 X 8 = 0 
0 X 9 = 0 
0 X 10 = 0 
0 X 11 = 0 
0 X 12 = 0 
0 X 13 = 0 
0 X 14 = 0 
0 X 15 = 0 
0 X 16 = 0 
0 X 17 = 0 
0 X 18 = 0 
0 X 19 = 0 
0 X 20 = 0 
0 X 21 = 0 
0 X 22 = 0 
0 X 23 = 0 
0 X 24 = 0 
0 X 25 = 0 
0 X 26 = 0 
0 X 27 = 0 
0 X 28 = 0 
0 X 29 = 0 
0 X 30 = 0 
0 X 31 = 0 
0 X 32 = 0 
0 X 33 = 0 
0 X 34 = 0 
0 X 35 = 0 
0 X 36 = 0 
0 X 37 = 0 
0 X 38 = 0 
0 X 39 = 0 
0 X 40 = 0 
0 X 41 = 0 
0 X 42 = 0 
0 X 43 = 0 
0 X 44 = 0 
0 X 45 = 0 
0 X 46 = 0 
0 X 47 = 0 
0 X 48 = 0 
0 X 49 = 0 
0 X 50 = 0 
0 X 51 = 0 
0 X 52 = 0 
0 X 53 = 0 
0 X 54 = 0 
0 X 55 = 0 
0 X 56 = 0 
0 X 57 = 0 
0 X 58 = 0 
0 X 59 = 0 
0 X 60 = 0 
0 X 61 = 0 
0 X 62 = 0 
0 X 63 = 0 
0 X 64 = 0 
0 X 65 = 0 
0 X 66 = 0 
0 X 67 = 0 
0 X 68 = 0 
0 X 69 = 0 
0 X 70 = 0 
0 X 71 = 0 
0 X 72 = 0 
0 X 73 = 0 
0 X 74 = 0 
0 X 75 = 0 
0 X 76 = 0 
0 X 77 = 0 
0 X 78 = 0 
0 X 79 = 0 
0 X 80 = 0 
0 X 81 = 0 
0 X 82 = 0 
0 X 83 = 0 
0 X 84 = 0 
0 X 85 = 0 
0 X 86 = 0 
0 X 87 = 0 
0 X 88 = 0 
0 X 89 = 0 
0 X 90 = 0 
0 X 91 = 0 
0 X 92 = 0 
0 X 93 = 0 
0 X 94 = 0 
0 X 95 = 0 
0 X 96 = 0 
0 X 97 = 0 
0 X 98 = 0 
0 X 99 = 0 
0 X 100 = 0

Conclusion

在本文中，我们对Java与C#进行了详细比较。最好找到适合您项目的语言。在这里，我们通过使用不同的算法和构建代码来更好地理解这两种语言。

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