刚开始学习jawa，遇到这个问题，不明白，哪位大神解释下

Question

Exception in thread "main" java.lang.IllegalArgumentException: Too many pattern letters: W
at java.time.format.DateTimeFormatterBuilder.parsePattern(Unknown Source)
at java.time.format.DateTimeFormatterBuilder.appendPattern(Unknown Source)
at java.time.format.DateTimeFormatter.ofPattern(Unknown Source)
at ll.hehe.main(hehe.java:8)

Answer 1

"dd/WW/uuuu"换成"HH:mm:ss"试试