集册 Java实例教程 使用数组反射将短值和长值设置为数组

使用数组反射将短值和长值设置为数组

欢马劈雪     最近更新时间:2020-01-02 10:19:05

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使用数组反射将短值和长值设置为数组

import java.lang.reflect.Array;

import static java.lang.System.out;
// 来自 N o w J a v a . c o m - 时  代  Java

public class ArrayTroubleToo {

    public static void main(String... args) {

        Object o = new int[2];

        Array.setShort(o, 0, (short) 2); // widening, succeeds

        Array.setLong(o, 1, 2L); // narrowing, fails

    }

}


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