没有方法main？

2010-04-27 04:39:24 244 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

从C到汇编：单片机汇编语言核心概念迁移指南本文详细介绍了从C语言迁移到单片机汇编语言的核心概念与实践指南，特别适合嵌入式开发者。文章深入探讨了汇编语言在性能优化、时序控制等方面的独特优势，并提供了变量存储、函数实现、流程控制等关键概念的对应关系，帮助开发者高效掌握汇编编程技巧。阅读详情

public class Person
{
static int count =0;
protected String name;
protected int age;
public Person(String n1,int a1)
{
name=n1;
age=a1;
this.count++;
}
public String toString()
{
return this.name+","+this.age;
}
public void display()
{
System.out.print("本类名="+this.getClass().getName()+";");
System.out.println("父类名="+this.getClass().getSuperclass().getName());
System.out.print("Person.count="+this.count+" ");
System.out.print("Student.count="+Student.count+" ");
Object obj=this;
if(obj instanceof Student)
System.out.println(obj.toString()+"是Student类对象");
else if(obj instanceof Person)
System.out.println(obj.toString()+"是Person类对象");
}
}
class Student extends Person
{
static int count=0;
protected String dept;
protected Student (String n1,int a1,String d1)
{
super(n1,a1);
dept=d1;
this.count++;
}
public String toString()
{
return super.toString()+","+dept;
}
public void display()
{
super.display();
System.out.print("super.count="+super.count);
System.out.println(" ;this.count="+this.count);
}
public static void main(String args[])
{
Person per=new Person("王永涛",23);
per.display();
Student stu = new Student("张小三",22,"计算机系");
stu.display();
}
}
为什么会出现错误 exception in thread "main" java.lang.NoSuchMethodError:main

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