小编Chu*_*hao的帖子

我试图使用我的自定义类与迭代器,但它不能迭代使用的元素foreach.我怎么处理它？

public class FCSOfOtherClass<Double> {
private int n;
private Double[] a;

public FCSOfOtherClass(int cap) {
    a = (Double[]) new Object[cap];
}

public void push(Double dou) {
    if (a.length == n) {
        this.resize(2 * a.length);
        a[n++] = dou;
    } else {
        a[n++] = dou;
    }
}

private void resize(int max) {
    Double[] newa = (Double[]) new Object[max];
    for (int i = 0; i < n; i++) {
        newa[i] = a[i];
        a = newa;
    }
}

public Boolean isEmpty() { …