数组中的添加删除操作

public class Szcz {
    private Object[] objs = new Object[1];
    private int size;

    public void add(Object o) {
        if (size == objs.length) {
            Object[] nobjs = Arrays.copyOf(objs, objs.length + 1);
            nobjs[size] = o;
            objs = nobjs;
        } else {
            objs[size] = o;
        }
        size++;
    }

    public void remove(int index) {
        Object[] o1 = new Object[index - 1];
        Object[] o2 = new Object[size - index - 1];
        for (int i = 0; i < o1.length; i++) {
            o1[i] = objs[i];
        }
        for (int i = 0; i < o2.length; i++) {
            o2[i] = objs[index + 1 + i];
        }
        int c = 0;
        Object[] o3 = new Object[o1.length + o2.length];
        for (int i = 0; i < o1.length; i++) {
            o3[i] = o1[i];
            c++;
        }
        for (int i = 0; i < o2.length; i++) {
            o3[c] = o2[i];
            c++;
        }
    }

    @Override
    public String toString() {
        return "Szcz [objs=" + Arrays.toString(objs) + ", size=" + size + "]";
    }
    
}