C # language vs. Java language programs

Entering the 21st century, the information industry has grown rapidly, in software development, the Java language and C # language are independently, has been gradually improved and widely used, the Java language and C # language is an object-oriented language, but Java programs and C # programs still have a certain difference.

The following are examples of programs in both languages.

The basic program of 1.Java language:

Import　java.util.*;
Package　HelloJava{
Public　class　Message{
Public　static　void　main(String　[]　args){
System.out.println(“欢迎来到Java世界”);
}
}
}


The basic program of 2.c# language:

Using　System;
Using　System.Collection.Generic;
Using　System.Text;
Namespace　HelloAccp{
Class　Program{
Static　void　Main(string　[]　args){
Console.WriteLine(“Hello　Accp。NET”);
Console.ReadLine();
}
}
}

Based on these two basic programs, let's distinguish between the Java language Program and the C # language program.

A The keyword to import the package.

In Java, if you import other packages, you should use the Import keyword, and in C #, you use the Using keyword to refer to other namespaces, but they work the same way.

Two Keyword for the namespace.

Namespace (namespaces) are the way to organize your code in C #, and package (packages) are used in Java, and their role is to put tightly related code in the same namespace, greatly improving management and efficiency.

Three class keyword.

In both Java and C #, class keywords are used to represent classes, and any code that is written should be contained within a class. class to be included in a namespace or package, but in Java, the class name must be the same as the name of the source file, and C # is not required.

Four The main method is different.

The main () method in C # is the same as the main () method in Java, and is the first step in running the program. In Java, however, the main () method is lowercase and has only one way of writing, while the main () method in C # must be capitalized and has four different characters. respectively:

Static　void　Main(string　[]　args){}
static　void　Main(){}
Static　int　Main(string　[]　args){}
static　int　Main(){}

Five Input and Output methods.

The output method in Java is: System.out.println () and another System.out.println (the value to be output);

The input method is: Create the Scanner object, such as Scanner sa = new Scanner (), and then use the object Point method. such as String name = Sa.nextstring ();

The output method in C # is: Console.WriteLine (); and Console.WriteLine (value to output); A method unique to C # Console.WriteLine ("Format string", List of variables);

The Input method is: string name = Console.ReadLine ();

Above is the difference which I summed up in the study, perhaps has the loophole to give everybody to make a reference, hoped that everybody studies these two languages well, together explores them the knowledge.