如何动态声明具有数组大小的Java数组？
要声明数组大小，请使用Scanner类从用户动态读取所需的整数值，并使用给定的值创建一个数组：
示例
import java.util.Arrays;
import java.util.Scanner;
public class PopulatingAnArray {
public static void main(String args[]) {
System.out.println("Enter the required size of the array :: ");
Scanner s = new Scanner(System.in);
int size = s.nextInt();
int myArray[] = new int [size];
System.out.println("Enter the elements of the array one by one ");
for(int i = 0; i<size; i++) {
myArray[i] = s.nextInt();
}
System.out.println("Contents of the array are: "+Arrays.toString(myArray));
}
}输出结果
Enter the required size of the array :: 5 Enter the elements of the array one by one 78 96 45 23 45 Contents of the array are: [78, 96, 45, 23, 45]