вывод программы
-1.0, class java.lang.Double
3, class java.lang.Integerpackage com.javarush.task.task29.task2904;
/*
Особенности автобоксинга
*/
public class Solution {
private Integer[] array = new Integer[]{1, 2, 3, 4};
public static void main(String[] args) {
Number value1 = new Solution().getValueByIndex(5); //-1.0, class java.lang.Double expected
Number value2 = new Solution().getValueByIndex(2).intValue(); //3, class java.lang.Integer expected
System.out.println(value1 + ", " + value1.getClass().toString());
System.out.println(value2 + ", " + value2.getClass().toString());
}
Number getValueByIndex(int index) {
return (index >= 0 && index < array.length) ? array[index] : new Double(-1);
}
}