Eclipse不识别我的“主”方法

我想在Eclipse中编写一个“Hello，World”变体程序，而且我似乎无法运行我的程序。Eclipse不识别我的“主”方法

下面的代码：

/** 
* 
*/ 
package GreeterPackage; 

/** 
* @author Raven Dreamer 
* Prints out "Hello, World" in three languages: 
* English, French, and Spanish. 
*/ 
public class GreeterProg { 

    /** 
    * returns "Hello, World" three times, once 
    * in English, once in French, and once in 
    * Spanish. 
    */ 
    public static void Main(String[] args){ 
    /** instances of the three greeter 
    * classes so the non-static methods 
    * can be called. 
    */ 
    EnglishGreeter eng = new EnglishGreeter(); 
    FrenchGreeter fre = new FrenchGreeter(); 
    SpanishGreeter spa = new SpanishGreeter(); 
    System.out.println(eng.greet()); 
    System.out.println(fre.greet()); 
    System.out.println(spa.greet()); 

} 
}

而且这里是我的SpanishGreeter代码（法语和英语招待员是相同的，目前）

/** 
* 
*/ 
package GreeterPackage; 

    /** 
    * @author Raven Dreamer 
    * Returns "Hello, World!" but in Spanish! 
    */ 
    public class SpanishGreeter extends greeter { 

     /**Spanish string of "Hello, World!" 
     */ 
     private String GREET = "¡Hola, World!"; 

     /** 
     * returns "Hello, World" in Spanish 
     */ 
     public String greet() { 
      return GREET; 
     } 

    }

代码编译罚款，没有错误，但是当我尝试作为Java应用程序运行该程序，我得到以下错误： enter image description here