超菜鸟的java问题．

Question

刚刚接触java,也只能写出helloworld，刚才照书上写一个例子，但出不来，还望大家帮忙看看，谢谢．public class People
{
public static void main(String args[])
{
float hight,weight;
String head,ear,mouth;
Void speak(String s);
{
System.out.println(s);
}
}
}public 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，咱不去取经了，改去月宫吧");
}
}

Answer 1

public class People
{
public static void main(String args[])
{
float hight,weight;
String head,ear,mouth;
Void speak(String s);
{
System.out.println(s);
}
}
}
修改成：
public class People
{
float hight,weight;
String head,ear,mouth;
public static void main(String args[])
{
}Void speak(String s);
{
System.out.println(s);
}
}

Answer 2

1.在main方法中定义speak方法....那speak方法就不是属于people的了...
2.同一个文件不能有两个public类,
3.people的字段的可见性不正确,在其他类中就不能直接赋值

Answer 3

改为
class People
{
   float hight,weight;
   String head,ear,mouth;
   void speak(String s)
  {  
     System.out.println(s);
  }
}
public 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，咱不去取经了，改去月宫吧");
}
}

Answer 4

class People
{
float hight,weight;
String head,ear,mouth;
void speak(String s)
{
System.out.println(s);
}
}
改为
class People
{
public float hight,weight;
public String head,ear,mouth;
void speak(String s)
{
System.out.println(s);
}
}

Answer 5

class People
{
   float hight,weight;
   String head,ear,mouth;
   void speak(String s)
  {  
     System.out.println(s);
  }
}
public 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，咱不去取经了，改去月宫吧");
}
}编译通过····

Answer 6

public class People{
float hight, weight;
String head, ear, mouth; public void speak(String s){
System.out.println(s);
} 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，咱不去取经了，改去月宫吧");
}
}

Answer 7

Void speak(String s);
~ 要小写            ~ ;去掉。
调试方法main可以放在类中。

Answer 8

这个应该没问题了：
－－－－－－－－－－－－－－－－－－－－－－－－－－
class People
{
float hight,weight;
String head,ear,mouth,s;
public void speak(String s)
{
System.out.println(s);
} public static void main(String args[])
{
People 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，咱不去取经了，改去月宫吧");
}
}
－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

Answer 9

现在可以编译通过了．
谢谢大家　．
这样看来，java好难，不知道能不能坚持走下去．