Creating toString method in custom ArrayList Java-CodePudding

I'm creating my own ArrayList and stuck in the toString() method, can you help me get rid of the comma after printing the last item?

toString() method:

    @Override
    public String toString() {  
    StringBuilder sb = new StringBuilder();
    if(store == null) {
        return "[]";
    } else {

    for (int i = 0; i < size; i  ) {
        sb.append(store[i].toString()   ", ");
    }

    return "["   sb.toString()   "]";
    }
}

Main method:

public static void main(String[] args) {
    MyArrayList<String> fruits = new MyArrayList<>();

    System.out.println("My array list with fruits :)");

    fruits.add("Bananas");
    fruits.add("Apples");
    fruits.add("Pineapple");
    fruits.add("Peaches");
    fruits.add("Pears");
    fruits.add("Plum");

    System.out.println("The list of fruits : "   fruits);

    fruits.clear();

    System.out.println("All fruits have been eaten =) "   fruits);

Output:

[Bananas, Apples, Pineapple, Peaches, Pears, Plum, ]

CodePudding user response：

Concat the comma at the start of the String and start the loop at index 1

if(store.length > 0) {
   sb.append(store[0].toString());
}

for (int i = 1; i < store.length; i  ) {
   sb.append(", "   store[i].toString());
}

CodePudding user response：

Just add an if condition to only add the comma if the index i is not equals to the last index accepted by the for loop

@Override
    public String toString() {  
    StringBuilder sb = new StringBuilder();
    if(store == null) {
        return "[]";
    } else {

    for (int i = 0; i < size; i  ) {
        sb.append(store[i].toString());
        if(i != size - 1) sb.append(",");
    }

    return "["   sb.toString()   "]";
    }
}