java Ôõôѭ»· - Java / Eclipse

import java.util.*;
public class Blog {


public static void main(String[] args) {
float price,weight = 0;
price=50.0f;
System.out.print("ÇëÊäÈëµ°¸âµÄÖØÁ¿£º");
Scanner scanner =new Scanner(System.in);
weight=scanner.nextFloat();
 
  if(weight >= 2&& weight <3)
{
price=(float)(price*0.9*weight);
}
if(weight>3)
{
price =(float)(price*0.8*weight);
}
   
  System.out.println(price);
}
}

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do{
System.out.print("ÇëÊäÈëµ°¸âµÄÖØÁ¿£º");
Scanner scanner =new Scanner(System.in);
weight=scanner.nextFloat();
  
  if(weight >= 2&& weight <3)
{
price=(float)(price*0.9*weight); 
}
if(weight>3)
{
price =(float)(price*0.8*weight);
}
   
  System.out.println(price);
}
}while(²»ÔÙÑ­»·µÄÌõ¼þ£©

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 while(x){..........}