CODEWITHSUNDEEP
javavariables
Alice the SWE
Alice the SWE

Reputation: 55

Java Error: "Cannot find symbol" Location variable

I am a noob at coding that is practicing online with this website named programmer. I am currently working on this exercise that requires me to locate the substring "rat" inside any argument string inputted by the user. I know this might be a rookie mistake, but I don't know how to fix what is wrong.

The problem:

If we invoke the method ratSmeller with the argument “baccarat”, the method should return true, if we invoke it with the argument “mat” the method must return false, and it must return true if invoked with the word “rat”. For now you can assume that “rat” will always appear in lowercase. 

import java.util.Scanner;

public class Rats {
public boolean ratSmeller(String line) {

     boolean found;
     String[] strArray = new String[] {line};
        if (strArray.indexOf("rat") != -1) {
            found = true;
            }else{
            found = false;
            }
            return found;

}

public static void main(String args[]) {
    Scanner scanner = new Scanner(System.in);
    System.out.println("Enter a word and we will tell you if it contains the string 'rat' in it: ");
    String word = scanner.nextLine();
    Rats rats = new Rats();
    System.out.println("Output: ");
    System.out.println(rats.ratSmeller(word));
}
}

My only error is this: 

Line 11 cannot find symbol if (strArray.indexOf("rat") != -1) { ^ symbol: method indexOf(String) location: variable strArray of type String[]

Not sure how to fix this? Please help. Thanks!

Upvotes: 1

Views: 5342

Answers (3)

Shifat
Shifat

Reputation: 762

Array doesn't have indexOf method. Just try it,in replace of your code. Hope it will work - 

public boolean ratSmeller(String line) {

 boolean found;
 List<String> strArray = new ArrayList<String>();
 strArray.add(line);
    if (strArray.indexOf("rat") != -1) {
        found = true;
        }else{
        found = false;
        }
        return found;
    }

Upvotes: 0

hicham abdedaime
hicham abdedaime

Reputation: 366

edit your function ratSmeller : 

boolean found=false;

    if (line.indexOf("rat") != -1)
    {
        found = true;
    }

    return found;

Upvotes: 0

Suresh Atta
Suresh Atta

Reputation: 121998

 if (strArray.indexOf("rat") != -1) {

That wont compile because strArray is an Array object. It doesn't have indexOf method. String class have that method.

You might want to check string have it.

 if (line.indexOf("rat") != -1) {

Apart from that you are overusing variables and the line String[] strArray = new String[] {line}; is completely redundant. I dont see any reason to delcare an array with single element.

Upvotes: 3

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