java上机题

class person
{
public int man;
public int women;
public long name;
public float weight;
public person()
{
this.name=name;
this.weight=weight;
}
}
class man extends person
{
public int work;
public int name;
public man(long name,float weight,int work)
{
super(name,weight);
this.work=work;
}
public void draw()
{
System.out.println("man:"+this.name+"\n"+"weight:"+this.weight+"\n"+"work:"+this.work);
}

}
class test2
{
public static void main(String args[])
{
man m=new man(茂军,175.5,doctor);
m.draw();

}
}
问题：在super(name,weight)处报“找不到符号”
问题：main函数是干什么作用的？

你小子骗分数阿，把我的代码复制了一遍，混

你这个错误不只一处
首先name变量你传的是字符串所以应该是String型的.其次你的第二个参数传的是小数.应该用double型的,float型的会报错.而且man m=new man(茂军,175.5,doctor); 里的 茂军 应该有"".而且这个参数doctor你还没有定义.

其次你的person类的构造方法写错了.这个构造方法应该有2个参数.改成
public person(String name,double weight)
{
this.name=name;
this.weight=weight;
}
....改得太多了.我把改好的发下面
class person
{
public int man;
public int women;
public String name;
public double weight;
public person(String name,double weight)
{
this.name=name;
this.weight=weight;
}
}
class man extends person
{
public int work;
public int name;
public man(String name,double weight,int work)
{
super(name,weight);
this.work=work;
}
public void draw()
{
System.out.println("man:"+this.name+"\n"+"weight:"+this.weight+"\n"+"work:"+this.work);
}

}
class test2
{
public static void main(String args[])
{
int doctor=1;
man m=new man("",175.5,doctor);
m.draw();

}
}
至于问题2,main方法是一个程序的入口.而且一个程序有且只有一个入口.每个程序必须有一个main方法才能运行.....
这个申请追加分数....太费劲了

import java.io.*; public class java_3{ public static void main(string[] args){ string sizestr; string filename; if(args.length > 1) sizestr = args[1]; else sizestr = "3000"; if(args.length > 0) filename = args[0]; else filename = "newfile.doc"; long size = 0; try{ size = long.parselong(sizestr); } catch(numberformatexception e){} try{ //*********found******** randomaccessfile raf = new randomaccessfile(filename,"rw"); //*********found******** raf.setlength(size); raf.close(); } catch(ioexception e){} } }