List<String> stringList = Arrays.asList("1","2","3"); List<Integer> integerList = Arrays.asList(1,2,3);
方法一:適用於List<String>
String.join(",", stringList);
方法二:都適用
Joiner.on(",").join(integerList);
List<String> stringList = Arrays.asList("1","2","3"); List<Integer> integerList = Arrays.asList(1,2,3);
方法一:適用於List<String>
String.join(",", stringList);
方法二:都適用
Joiner.on(",").join(integerList);