能帮小弟我解决上这个bug吗

能帮小弟我解决上这个bug吗 能帮我解决下这个bug吗 IDE 提示: error: class PriorityQApp is public, should be declared in a file named PriorityQApp.java public class PriorityQApp { 可是我已经写了 public 了啊 //////////////////////////////////////////////////////////////// class Link { public long dData; // data item public Link next; // next link in list // ------------------------------------------------------------- public Link(long dd) // constructor { dData = dd; } // ------------------------------------------------------------- public void displayLink() // display this link { System.out.print(dData + ); } } // end class Link // ////////////////////////////////////////////////////////////// class SortedList { private Link first; // ref to first item // ------------------------------------------------------------- public SortedList() // constructor { first = null; } // ------------------------------------------------------------- public boolean isEmpty() // true if no links { return (first == null); } // ------------------------------------------------------------- public void insert(long key) // insert, in order { Link newLink = new Link(key); // make new link Link previous = null; // start at first Link current = first; // until end of list, while (current != null key current.dData) { // or key current, previous = current; current = current.next; // go to next item }