Java：如果不循环，怎么用sysout直接输出数组？

Question

int[] a = { 1, 2, 3, 4, 5 };
System.out.println(a);
System.out.println(a.toString);

这两个都不行啊

Answer 1

用Arrays类操作数组即可，代码如下

import java.util.Arrays;

public class Test {

public static void main(String[] args) {

int[] a = { 1, 2, 3, 4, 5 };

System.out.println(Arrays.toString(a));

}

}

Answer 2

import java.util.Arrays;

public class Test {

public static void main(String[] args) {
int[] a = { 1, 2, 3, 4, 5 };
System.out.println(Arrays.toString(a));
}

}

Answer 3

System.out.println(java.util.Arrays.toString(a));