我需要打印对象数组.例如,我有一个对象数组,用于保存“shape”类中的对象.我是否为数组中的每个对象调用toString方法,还是在ObjectList中编写toString方法来打印出实例变量？如果是这样,我该怎么做？

public class Shape{
    private String shapeName;
    private int numSides;

    public String toString(){
        return shapeName + " has " + numSides + " sides.";
    }
}

public class ObjectList{
    private Object[] list = new Object[10];
    private int numElement = 0;

    public void add(Object next){
        list[numElement] = next;
    }

    public String toString(){
        // prints out the array of objects 

        // do I call the toString() method from the object?

        // or do I print the instance variables? What am I printing?

        // I'm guessing I do a for loop here
    }
}

public class Driver{
    public static void main(String[] args){
        ObjectList list = new ObjectList();
        Shape square = new Shape("square",4);
        Shape hex = new Shape("hexagon",6);
        list.add(square);
        list.toString();  // prints out array of objects
}

我的目标是打印这个：

square has 4 sides
hexagon has 6 sides