Java中的字符串6——Stringjoiner
[图片] [图片] import java.util.StringJoiner; public class demo { public static void main(String[] args) { int arr[] = {1,2,3}; StringJoiner a = new StringJoiner("[",",","]"); for (int i = 0;i
[图片] [图片] import java.util.StringJoiner; public class demo { public static void main(String[] args) { int arr[] = {1,2,3}; StringJoiner a = new StringJoiner("[",",","]"); for (int i = 0;i