java以最后一个逗号分隔字符串

public class SplitStringByLastComma {
    public static void main(String[] args) {
        String input = "apple,banana,cherry,date";
        String[] parts = splitByLastComma(input);
        
        for (String part : parts) {
            System.out.println(part);
        }
    }

    public static String[] splitByLastComma(String str) {
        int lastCommaIndex = str.lastIndexOf(',');
        if (lastCommaIndex == -1) {
            // 如果没有找到逗号，直接返回原字符串作为唯一的元素
            return new String[]{str};
        } else {
            // 分割字符串为两部分：最后一个逗号之前的部分和之后的部分
            String beforeLastComma = str.substring(0, lastCommaIndex);
            String afterLastComma = str.substring(lastCommaIndex + 1);
            return new String[]{beforeLastComma, afterLastComma};
        }
    }
}