Question

java 编译下面程序时候提示 Exception in thread "main" java.lang.NoSuchMethodError: main

public class people
{
float hight,weight;
String head, ear, mouth;

void speak(String s)
{
System.out.println(s);
}
}
class A
{ public static void main(String args[])
{people zhubajie;
zhubajie=new people();
zhubajie.weight=200f;
zhubajie.hight=1.70F;
zhubajie.head="大头";
zhubajie.ear="两只大耳朵";
zhubajie.mouth="一只大嘴";
System.out.println("重量"+zhubajie.weight+"身高" +zhubajie.hight);
System.out.println(zhubajie.head+zhubajie.mouth+zhubajie.ear);
zhubajie.speak("师傅，咱们别去西天了，改去月宫吧");
}
}

Answer 1

class A才是主函数所在的类，所以你把public class people中的public去掉就可以了，或者去掉public并且在class A前加public

Answer 2

people zhubajie;
zhubajie=new People();//这个地方要大些

Answer 3

主方法main必须要在public修饰的类中