Thread: Writing a very simple "Poker" game in Java

Hello, everyone.
I'm writing an extremely simple "Poker" type of game but I keep getting an error.
The code is supposed to do the following things; Prompt the user to enter 7 integers in the range 1 to 13 (inclusive), display a table of frequencies of the integers from 1 to 13, find the integer that occurs most frequently, and finally check if the 7 integers contain a continuous sequence of 5 or more.

Where the code messes up is at the boolean and where I try to return i. What's going wrong?

 
import java.util.Scanner;
public class Poker
{
  public static void main(String[] args)
  {
    int[] arrayOfInt1 = new int[7];
    int[] arrayOfInt2 = new int[14];
 
    readCards(arrayOfInt1);
    updateFreq(arrayOfInt1, arrayOfInt2);
    System.out.println("Number\tFrequency ");
    for (int i = 1; i < arrayOfInt2.length; i++) {
      System.out.println(i + "\t" + arrayOfInt2[i]);
    }
    int i = findMax(arrayOfInt2);
    System.out.println("The most frequent number is " + i + " with " + arrayOfInt2[i] + " occurrences.");
 
    int j = findSequence(arrayOfInt2);
    if (j > 0) {
      System.out.println("The sequence of 5 starts at " + j);
    }
    else
      System.out.println("There is no sequence of 5.");
  }
 
  public static void readCards(int[] paramArrayOfInt)
  {
    boolean bool = false;
 
    Scanner localScanner = new Scanner(System.in);
    do {
      System.out.print("Enter 7 integers (1-13): ");
      for (int i = 0; i < paramArrayOfInt.length; i++) {
        paramArrayOfInt[i] = localScanner.nextInt();
      }
      bool = checkRange(paramArrayOfInt);
    }while (!bool);
  }
 
  public static int checkRange(int[] paramArrayOfInt)
  {
    int i = 1;
 
    for (int j = 0; j < paramArrayOfInt.length; j++) {
      if ((paramArrayOfInt[j] < 1) || (paramArrayOfInt[j] > 13)) {
        i = 0;
 
      }
    }
    return i;
  }
 
  public static void updateFreq(int[] paramArrayOfInt1, int[] paramArrayOfInt2) {
    for (int i = 0; i < paramArrayOfInt1.length; i++)
      paramArrayOfInt2[paramArrayOfInt1[i]] += 1;
  }
 
  public static int findMax(int[] paramArrayOfInt) //find integer that occurs most often
  {
    int i = paramArrayOfInt[0];
    int j = 0;
 
    for (int k = 1; k < paramArrayOfInt.length; k++) {
      if (paramArrayOfInt[k] > i) {
        j = k;
        i = paramArrayOfInt[k];
      }
    }
    return j;
  }
 
  public static int findSequence(int[] paramArrayOfInt) { //check if the integers contain a continuous sequence of 5 or more
    int i = 0;
    for (int j = 0; j < paramArrayOfInt.length; j++) {
      if (paramArrayOfInt[j] != 0) {
        i++;
        if (i >= 5)
          return j - i + 1;
      }
      else
      {
        i = 0;
      }
    }
    return -1;
  }
}

I forgot to include the error I receive;

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
	Type mismatch: cannot convert from int to boolean
 
	at Poker.checkRange(Poker.java:51)
	at Poker.readCards(Poker.java:38)
	at Poker.main(Poker.java:11)

boolean bool = false;
bool = checkRange(paramArrayOfInt);

bool is a boolean value, but checkRange(int[] i) returns an int.

You can make checkRange() return a boolean instead of an int.. or you can change bool to an int depending on what you're trying to do.
Remember to take while (!bool); into consideration when you make your decision.

Yeah, you can simply just say.. return (i != 0); aslong as the method type is set to return a boolean ofcourse.