Java 'Import' Utility Not Working -


instead of producing output, code throws error on line i've used 'import' utility. don't know how remove error. please help! i'm novice. read code in 'head first java' sierra.

import java.util.*; public class dotcombust {     private gamehelper helper = new gamehelper();     private arraylist < dotcom > dotcomslist = new arraylist < dotcom > ();     private int numofguesses = 0;     private void setupgame() {         dotcom 1 = new dotcom();         one.setname("pets.com");         dotcom 2 = new dotcom();         two.setname("toys.com");         dotcom 3 = new dotcom();         three.setname("go.com");         dotcomslist.add(one);         dotcomslist.add(two);         dotcomslist.add(three);         system.out.println("sink coms");         system.out.println("jk yhhg  jyhhj ");         system.out.println("in small no of guesses");         (dotcom dotcomtoset: dotcomslist) {             arraylist < string > newloction = helper.placedotcom(3);             dotcomtoset.setlocationcells(newlocation);          }     }     private void stratplaying() {         while (!dotcomslist.isempty()) {             string userguess = helper.getuserinput("enter number");             checkuserguess(userguess);          }         finishgame();      }     private void checkuserguess(string userguess) {         numofguesses++;         string result = "miss";         (dotcom dotcomtotest: dotcomslist) {             result = dotcomtotest.checkyourself(userguess);             if (result.equals("hit")) {                 break;             }             if (result.equals("kill")) {                 dotcomslist.remove(dotcomtotest);                 break;             }         }         system.out.println(result);     }     private void finishgame() {          system.out.println("all d dead");          if (numofguesses <= 18) {             system.out.println("you took " + numofguesses);             system.out.println("u got out");         } else {             system.out.println("took u long " + numofguesses);             system.out.println("u worst");         }     }     public static void main(string[] args) {         dotcombust game = new dotcombust();         game.setupgame();         game.startplaying();     } } import java.util.*; public class dotcom {     private arraylist < string > locationcells;     private string name;     public void setlocationcells(arraylist < string > loc) {         locationcells = loc;     }     public void setname(string n) {         name = n;     }     public string checkyourself(string userinput) {         string result = "miss";         int index = locationcells.indexof(userinput);         if (index <= 0) {             locationcells.remove(index);             if (locationcells.isempty()) {                 result = "kill";                 system.out.println("you sunk " + name);             } else {                 result = "hit";             }         }         return result;     } }

you shouldn't put in 1 file. create new file, dotcom , paste code below

import java.util.*; public class dotcom {     private arraylist < string > locationcells;     private string name;     public void setlocationcells(arraylist < string > loc) {         locationcells = loc;     }     public void setname(string n) {         name = n;     }     public string checkyourself(string userinput) {         string result = "miss";         int index = locationcells.indexof(userinput);         if (index <= 0) {             locationcells.remove(index);             if (locationcells.isempty()) {                 result = "kill";                 system.out.println("you sunk " + name);             } else {                 result = "hit";             }         }         return result;     } }

be sure remove code above dotcombust.

2 same imports(import java.util.*; import java.util.*) cannot exist in 1 java source file. have either split 2 source files or remove second import.


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