public class SafeArrayDemo { public static void main(String[] args) { // 預設10個元素 SafeArray arr1 = new SafeArray(); // 指定配置 5 個元素 SafeArray arr2 = new SafeArray(5); for(int i = 0; i < arr1.getLength(); i++) arr1.setElement(i, (i+1)*10); for(int i = 0; i < arr2.getLength(); i++) arr2.setElement(i, (i+1)*10); System.out.print("arr1: "); arr1.showElement(); System.out.print("\narr2: "); arr2.showElement(); } }