import java.io.*; problem

Hello everyone, I'm here cause I'm having this problem in my program:

public class SimpleDotCom {
	int[] locationCells;
	int numOfHits = 0;
	
	public void setLocationCells (int[] locs) {
		locationCells = locs;
	}
	public String checkYourself (String stringGuess) {
		int guess = Integer.parseInt (stringGuess);
		String result = "miss";
		for (int cell : locationCells) {
			if (guess == cell) {
				result = "hit";
				numOfHits++;
				break;
			}
		}
		if (numOfHits == locationCells.length) {
			result = "kill";
		}
		System.out.println (result);
		return result;
	}
}

class SimpleDotComGame {
	public static void main (String[] args) {
		int numOfGuesses = 0;
		GameHelper helper = new GameHelper();

SimpleDotCom theDotCom = new SimpleDotCom();
		int randomNum = (int) (Math.random * 5);
	
		int[] locations = {randomNum, randomNum+1, randomNum+2};
		theDotCom.setLocationCells(locations);
		boolean isAlive = true;
		
		while (isAlive == true)	{
			String guess = helper.getUserInput("insira um número");
			String result = theDotCom.checkYourself (guess);
			numOfGuesses++;
			if (result.equals ("kill")) {
				isAlive = false;
				System.out.println ("Voce usou " + numOfGuesses + " palpites");
			}
		}
	}
}

import java.io.*;
public class GameHelper {
	public String getUserInput (String prompt) {
		String inputLine = null;
		System.out.print (prompt + " ");
		try {
			BufferedReader is = new BufferedReader (new InputStreamReader (System.in));
			inputLine = is.readLine ();
			if (inputLine.length () == 0) return null;
		} catch (IOException e) {
			System.out.println ("IOException: " + e);
		}
		return inputLine;
	}
}

what should I do about it? the tutorial I'm using does not say to save three different files, so I think this was supposed to work.

Ty

Your import statements need to be the first line in the saved file. So instead of having the import in the middle, move it to the top.

-Hunter

As I said before, I am not supposed to save three different files. I've tried that already, and it states three errors:

and I have no idea of how to solve this.

Help please???

Sorry I was a little confused at first since the title of this post was regarding imports. Now I think I know what you are asking. Only one class can be public within a java file. So remove the public keyword from all but one of the classes.

-Hunter

Rubens Martins wrote:As I said before, I am not supposed to save three different files.

One of the rules of Java is that if you make a top-level class public, it has to be saved in a file with the same name as the class (and the .java extension). You have two public classes: SimpleDotCom and GameHelper. These need to be in two separate files named SimpleDotCom.java and GameHelper.java.

You can also make the classes not public, as Hunter suggests.

Rubens Martins wrote:...line 48: cannot find symbol symbol: variable random location: class java.lang.Math int randomNum = (int) (Math.random * 5)

That error is unrelated to the classes being public or not. Math.random() is a method so you need to add parentheses.

Hunter McMillen wrote:Your import statements need to be the first line in the saved file. So instead of having the import in the middle, move it to the top.

-Hunter

It doesn't need to be the first line, but the only things that are allowed to be placed before import statements are the (optional) package declaration, comments and whitespace. Classes definitely do not fall into that group

Yo have got answers, Rubens Martin, and welcome to the Ranch

Okay, I'll remove the publics and add parentheses, thanks everyone!

No, removing the public keywords is not the right answer. You ought to correct the names of the files.