我能在 Java 中从另一个数组引用一个数组的元素吗?
可以,你可以 −
int [] myArray1 = {23, 45, 78, 90, 10}; int [] myArray2 = {23, 45, myArray1[2], 90, 10};
但是,一旦你这样做,第二个数组会存储该值的引用,而不是整个数组的引用。因此,数组中的任何更新都不会影响被引用的值 −
示例
import java.util.Arrays; public class RefferencingAnotherArray { public static void main(String args[]) { int [] myArray1 = {23, 45, 78, 90, 10}; int [] myArray2 = {23, 45, myArray1[2], 90, 10}; System.out.println("Contents of the 2nd array"); System.out.println(Arrays.toString(myArray2)); myArray1[2] = 2000; System.out.println("Contents of the 2nd array after updating ::"); System.out.println(Arrays.toString(myArray2)); System.out.println("Contents of the 1stnd array after updating ::"); System.out.println(Arrays.toString(myArray1)); } }
输出
Contents of the 2nd array [23, 45, 78, 90, 10] Contents of the 2nd array after updating :: [23, 45, 78, 90, 10] Contents of the 1stnd array after updating :: [23, 45, 2000, 90, 10]
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