java如何打印数组元素及元素之间使用逗号分隔呢?

1.使用for循环打印出数组元素
2.元素输出后,元素后面加上逗号

if (arraylistWords.length >= 1) {
    System.out.print(ArrayListWords[0]);
}

// note that i starts at 1, since we already printed the element at index 0
for (int i = 1; i < arrayListWords.length, i++) { 
     System.out.print(", " + arrayListWords[i]);
}


使用List
笔者建议使用Iterator

// assume String
Iterator<String> it = arrayListWords.iterator();
if (it.hasNext()) {
    System.out.print(it.next());
}
while (it.hasNext()) {
    System.out.print(", " + it.next());
}