Arrays类的用法

import java.util.Arrays;
import java.util.Scanner;
import java.util.concurrent.ForkJoinPool;

public class Main {
    public static void main(String[] args) {
     int[] a = new int[]{1,3,5,7,9,22};
     int[] b= Arrays.copyOfRange(a,0,3);
     System.out.println(Arrays.toString(a));
     System.out.println(Arrays.toString(b));
     System.out.println(Arrays.binarySearch(a,5));
     System.out.println(Arrays.equals(a,b));
    }
}

结果如下：

[1, 3, 5, 7, 9, 22]
[1, 3, 5]
2
false

Process finished with exit code 0