回答編集履歴
1
追記
answer
CHANGED
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@@ -2,4 +2,13 @@
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2
2
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List<Info> sortedList = infoList.stream()
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3
3
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.sorted(Comparator.comparing(info -> info.getSection().getSectionName()))
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4
4
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.collect(Collectors.toList());
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5
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+
```
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6
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+
###追記
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7
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+
```Java
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8
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Comparator<Info> comparator = Comparator.<Info, String> comparing(info -> info.getSection().getSectionName())
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9
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.thenComparing(info -> info.getSection().getSectionCode());
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10
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+
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11
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List<Info> sortedList = infoList.stream()
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12
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.sorted(comparator)
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13
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.collect(Collectors.toList());
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5
14
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```
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