返回值类型是数组的操作

/**

• @author lg

• @Description 对于数组的判断，除了反射，还可以这样子来进行操作

• @date 2022/1/14 9:52
  */
  public class SwitchTest {

  public static void main(String[] args) {
  try {
  Object obj = getObj("110");
  if (obj.getClass().isArray()){
  System.out.println("hello,这是一个数组 ");
  int length = Array.getLength(obj);
  if (length == 0) {
  throw new IllegalAccessException("数组长度为0");
  } else {
  for (int i = 0; i < length; i++) {
  Object o = Array.get(obj, i);
  // 输出每个参数的值即可
  System.out.println(o);
  }
  }
  }
  } catch (IllegalAccessException e) {
  e.printStackTrace();
  }

  }

  public static Object getObj(String code) throws IllegalAccessException {
  Object object;
  switch (code) {
  case "110":{
  object = new String[]{"1", "2", "3"};
  break;
  }
  case "111":{
  object = new String[]{"3", "4", "5"};
  break;
  }
  default:
  object = "hello,world";
  throw new IllegalAccessException("参数不合理异常");
  }
  return object;
  }
  }