sampleforb.java

《A first book of java》by Gary J.Bronson 北大出版社

public class SampleForB
{
  public static void main(String[] args)
  {
    int count;
  
    count = 2;    // initializer outside for loop
    for( ; count <= 20; )
    {
      System.out.print(count + "  ");
      count = count + 2;     // alteration statement
    }
     
  }
}