반응형 Java14 Apache poi(excel) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 @RequestMapping(value = "excelDownload") public void excelDownload(HttpServletResponse.. 2020. 1. 28. Comparable vs Comparator Comparable is a interface you need to implement to a Object where a specific compare standard has to be defined by overriding compareTo method. compareTo needs to be returned as an int value, + for moving up a list, - for moving down, 0 for staying at the same place. Wrapper type data does NOT need comparable interface to be compared since all Wrapper class already has been implemented with a Co.. 2019. 12. 1. 이전 1 2 3 다음 반응형