Ytukyg

I searched the site and found the partially useful StringBuilder method in an answer to another question, but it doesn't seem to want to take the char at index x and y of a 2d char array as a parameter.

Can you suggest a better and more simple method to do this? I say simple because there is a chance something like this will come up in the final, and I would like to be able to remember it. If it's "exotic" to me as a beginning programmer, I probably won't.

I took a fundamentals of programming course in c++, and if memory servers, all I had to do was str+=arrChars[x][y]; That doesn't work for Java, though.

Here is the present state of my toString() method:

public String toString()    {



    StringBuilder gardenPrint= new StringBuilder(" | 0 1 2 3n");

    int i, j;

    for(i=0;i<garden.length;i++)

        gardenPrint.append(i+ " | ");

        for(j=0;j<garden.length;j++)

            gardenPrint.append(garden[i][j]+" "+(j==garden.length-1) ? "n":"");

    return gardenPrint;

}

Java (nor C++) loops are controlled by indentation. You need braces and your ternary needs parenthesis and you have to return a String. Like,

public String toString() {

    StringBuilder gardenPrint = new StringBuilder(" | 0 1 2 3n");

    int i, j;

    for (i = 0; i < garden.length; i++) {

        gardenPrint.append(i + " | ");

        for (j = 0; j < garden.length; j++)

            gardenPrint.append(garden[i][j] + " " + ((j == garden.length - 1) ? "n" : ""));

    }

    return gardenPrint.toString();

}

However, we can implement this in a number of ways. For example,

public String toString() {

    StringBuilder gardenPrint = new StringBuilder(" | 0 1 2 3") //

            .append(System.lineSeparator());

    for (int i = 0; i < garden.length; i++) {

        gardenPrint.append(i + " |");

        for (char ch : garden[i]) {

            gardenPrint.append(" ").append(ch);

        }

        gardenPrint.append(System.lineSeparator());

    }

    return gardenPrint.toString();

}

In Java, you can use the following two ways to convert a char array to a String:-

public class CharArrayToString {



    public static void main(String args) {



        char chArr = new char{'1', '2', '3', 'A', 'B', 'C'};



        String str1 = new String(chArr);

        System.out.println("1st String: " + str1);



        String str2;

        str2 = String.valueOf(chArr);

        System.out.println("2nd String: " + str2);



    }



}

Output

1st String: 123ABC

2nd String: 123ABC