java.util.Arrays类的fill(int [] a,int val)方法将指定的int值分配给指定的整数数组的每个元素。
import java.util.Arrays; public class ArrayDemo { public static void main(String[] args) { int arr[] = new int[] {1, 6, 3, 2, 9}; System.out.println("Actual values: "); for (int value : arr) { System.out.println("Value = " + value); } Arrays.fill(arr, 18); System.out.println("New values after using fill() method: "); for (int value : arr) { System.out.println("Value = " + value); } } }
输出结果
Actual values: Value = 1 Value = 6 Value = 3 Value = 2 Value = 9 New values after using fill() method: Value = 18 Value = 18 Value = 18 Value = 18 Value = 18