What is wrong with this code?

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Hey Guys, I am making a tic tac toe game for school and I don't know why it is not running?

This is my Code:

Java

import java.util.Scanner;

public class TicTacToeOffical{

  public static Scanner in = new Scanner(System.in);

  public static int Introduction(){


    System.out.println("Hey");
    System.out.println("Today, you will play the game of Tic Tac Toe");
    System.out.println("So, let me go over few rules");
    System.out.println("Rule #1: This is how the Tic Tac Toe board will look like. ");

    try {
      Thread.sleep(1500);                          //Waits 1.5 Seconds
    }catch (Exception e) {
      System.out.println("Error");
    }


    System.out.println("           |          |          ");
    System.out.println("    0      |    1     |     2    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    3      |    4     |     5    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    6      |    7     |     8    ");
    System.out.println("           |          |          ");


    try {
      Thread.sleep(1500);
    }catch (Exception e) {                       //Waits 1.5 Seconds
      System.out.println("Error");
    }

    System.out.println("Rule #2: Choose a number to place your variable X or O");
    System.out.println("Lets say that you choose to be X and you choose the number 4");
    System.out.println("So now, the number 4 will be replacee with X");

    System.out.println("           |          |          ");
    System.out.println("    0      |    1     |     2    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    3      |    X     |     5    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    6      |    7     |     8    ");
    System.out.println("           |          |          ");

    try {
      Thread.sleep(2000);
    }catch (Exception e) {                           //Waits 1.5 Seconds
      System.out.println("Error");
    }

    System.out.println("Rule #3: To win the game, you have to get 3 X or O in a row ");

    System.out.println("           |          |          ");
    System.out.println("    0      |    X     |     2    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    3      |    X     |     5    ");
    System.out.println("           |          |          ");
    System.out.println("  -------------------------------");
    System.out.println("           |          |          ");
    System.out.println("    6      |    X     |     8    ");
    System.out.println("           |          |          ");


    try {
      Thread.sleep(1500);
    }catch (Exception e) {                           //Waits 1.5 Seconds
      System.out.println("Error");
    }

    System.out.println("So, Would You Like to play Tic Tac Toe?");       // The user will have two options.
    System.out.println("Press 1 for yes and 2 for No");                 //  If the user wants to play, Press 1
    int answer = in.nextInt();                                         // If the user doesn't want to play then press 2
    if (answer == 1){
      return 2;
    }else if (answer == 2){
      return 3;
    }
    return 1;
  }


  private static int notPlaying(){

    System.out.println("So you decided not to play Tic Tac Toe");  // This is the part of the code, when the user
    System.out.println("******** THE END **********");            // doesn't want to play Tic Tac Toe.

    return -1;
  }




  private static int playTime(){

    System.out.println("So, Are you ready to play Tic Tac Toe?");
    System.out.println("Player #1 will be X");
    System.out.println("Player #2 will be O");
    System.out.println("Your game will begin in");

    try {
      Thread.sleep(1000);
    }catch (Exception e) {                       //Waits 1 Seconds
      System.out.println("Error");
    }

    System.out.println("3");

    try {
      Thread.sleep(1000);
    }catch (Exception e) {                       //Waits 1 Seconds
      System.out.println("Error");
    }

    System.out.println("2");
    try {
      Thread.sleep(1000);
    }catch (Exception e) {                       //Waits 1 Seconds
      System.out.println("Error");
    }
    System.out.println("1");

    try {
      Thread.sleep(1000);
    }catch (Exception e) {                       //Waits 1 Seconds
      System.out.println("Error");
    }


    String [] Array = new String [9];     // Created a new string array


    for (int i = 0; i < 9; i++){
      Array [i] = " ";
    }
    for (int i = 0; i < 9; i++){

      System.out.println("Player #1: Please enter a number between 0 to 8");
      int currentPlayer = in.nextInt();
      Array [currentPlayer] = "X";

      System.out.println("           |          |          ");
      System.out.println("       "+Array[0]+"   |     " +Array[1]+"    |     "+Array[2]+"     ");
      System.out.println("           |          |          ");
      System.out.println("  -------------------------------");
      System.out.println("           |          |          ");
      System.out.println("       "+Array[3]+"   |     " +Array[4]+"    |     "+Array[5]+"     ");
      System.out.println("           |          |          ");
      System.out.println("  -------------------------------");
      System.out.println("           |          |          ");
      System.out.println("       "+Array[6]+"   |     " +Array[7]+"    |     "+Array[8]+"     ");
      System.out.println("           |          |          ");

        if (Array [0] &&  Array [1] &&  Array [2] == Array[currentPlayer]){
        System.out.println("Player One Won");

        }
      System.out.println("Player #2: Please enter a number between 0 to 8");
      int otherPlayer = in.nextInt();
      Array [otherPlayer] = "O";

      System.out.println("           |          |          ");
      System.out.println("       "+Array[0]+"   |     " +Array[1]+"    |     "+Array[2]+"     ");
      System.out.println("           |          |          ");
      System.out.println("  -------------------------------");
      System.out.println("           |          |          ");
      System.out.println("       "+Array[3]+"   |     " +Array[4]+"    |     "+Array[5]+"     ");
      System.out.println("           |          |          ");
      System.out.println("  -------------------------------");
      System.out.println("           |          |          ");
      System.out.println("       "+Array[6]+"   |     " +Array[7]+"    |     "+Array[8]+"     ");
      System.out.println("           |          |          ");





    }
    return 1;
  }




  public static void main(String[] args){ // Main Method



    int finish = 1;

    while(finish != -1){

      if(finish == 1){
        finish = Introduction();

      }if (finish == 2){
        finish = playTime();
      }if (finish == 3){
        finish = notPlaying();
      }
    }
  }
}

The Problem: When I run this program, it says something like that.

1 error found:
File: C:\Users\Nilesh\Downloads\TicTacToeOffical.java  [line: 167]
Error: bad operand types for binary operator '&&'
  first type:  java.lang.String
  second type: java.lang.String

Can you please help me solve this problem.

Posted 16-May-15 10:55am

Jainam Patel

Updated 16-May-15 13:16pm

PIEBALDconsult

v2

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Comments

PIEBALDconsult 16-May-15 19:14pm

It might be nice if you had posted only that line and the ones around it. Is it this one?
if (Array [0] && Array [1] && Array [2] == Array[currentPlayer]){

Jainam Patel 16-May-15 20:57pm

yesss

Can you please help me with this

Jainam Patel 18-May-15 11:30am

Hi, Can you please tell me what I have to do in order to check if the game is tie.

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Sascha Lefèvre · Accepted Answer · 2015-05-16T15:42:00

The operator && (spoken: 'AndAlso') is used to logically combine its left expression with its right expression and requires both these expressions (Array[0] and Array[1] in your case) to evaluate to the type of boolean. But your array 'Array' is an array of strings and accessing an index (like Array[0]) evaluates to the type of string.

You did it right with the third expression: Array[2] == Array[currentPlayer] , it evaluates to boolean because you use == to compare two strings. You need to replace Array[0] and Array[1] also by expressions that evaluate to boolean. Probably like this: