关于数组中的值拼接成字符串中间用逗号隔开的实现

package com.singsing.demo;

public class demo2 {
public static void main(String[] args) {
String[] str = { “a”, “b”, “c”, “d”, “e” };
String finalStr = “”;
for (int i = 0; i < str.length; i++) {
finalStr += str[i] + “,”;
}
System.out.println(finalStr.substring(0, finalStr.length() - 1));
}
}