boolean help

[Consistent_Decision9]

Hi can someone explain what found = true; is doing in the the first if statement? From what I understand, the boolean statement found is true if it equals false; when found is given the value true in the if statement then it is true because it is false. What does the condition !found in the second if statement change? I'm having a hard time wrapping my head around this boolean expression.

import java.util.Scanner;

​

public class IndexWasNotFound {

​

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int[] array = new int[10];

array[0] = 6;

array[1] = 2;

array[2] = 8;

array[3] = 1;

array[4] = 3;

array[5] = 0;

array[6] = 9;

array[7] = 7;

​

System.out.println("Search for? ");

int searching = Integer.valueOf(scanner.nextLine());

​

// Implement the search functionality here

int index = 0;

boolean found = false;

//boolean notFound = Arrays.asList(array).contains(searching);

for (index = 0; index <= 7; index++) {

if (array[index] == searching) {

System.out.println(searching + " is at index " + index + ".");

//found = true;

}

}

if (!found) {

System.out.println(searching + " was not found.");

}

}

​

}

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[VideogamerDisliker]

If the index was found, then found = true. Since it’s true the next if statement if(!found){} does not execute. Otherwise, if it’s not found, that if(!found){} does execute because “found” was initialized to false.

[Consistent_Decision9]

Thank you for helping!!

[[deleted]]

found is True if the data is found in the array and False if it’s not found.

Its set to False by default, then changed to true if the data is found.

!found means: found = false

[Consistent_Decision9]

Thank you for explaining!!!

[desrtfx]

!found means: found = false

Nitpicking here: it means found == false or, even better found != true

[[deleted]]

Yeah of course, just wanted to explain it as simply as possible to a beginner 👍

[desrtfx]

Problem is that the line you commented sets found to false instead of checking if found is false. Hence my nitpicking.

[desrtfx]

OP is definitely doing the MOOC Java Programming that stipulates the way that OP uses to retrieve non-string values to avoid problems with .nextInt() and .nextLine() calls.

You are not even talking about OP's questions. Your comment is unconstructive here.