我一直得到一个'illegal start of expression'，我不知道为什么

Question

正如标题中所说，我在代码的等式部分得到了一个非法的表达式开头。我确实相信我把一切都说对了，但我仍然有一个非法的表达开始。

public class FacebookUsers 
{
  public static void main(String[] args)
  {
      int  months = 1;
      for ( int people = 500000000; people < 2000000000; months ++)
      {
          people = (peoplestart) * ((1.05)**(months));
      }
      System.out.println("It took "+months+" to reach one billion users on "
              + "facebook at the rate of 5% growth.");
      months = 1;
      for ( int people = 500000000; people < 2000000000; months ++)
      {
          people = people * ((1.05)**(months));
      }
      System.out.println("It took "+months+" to reach two billion users on "
            + "facebook at the rate of 5% growth.");
   }
}

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Answer 1

Java没有**运算符。使用java.lang.Math.pow。

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/operators.html