回答編集履歴
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test
CHANGED
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@@ -31,3 +31,81 @@
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この1行をコメントアウトすれば、問題なく次の行でMapにdata2が格納されます。
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---
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### 追記を受けての追記
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でしたら Object型にしてしまう、というのも一つの手でしょうか。
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[参考サイト](https://qiita.com/hainet/items/daab47dc991285b1f552)
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```Java
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public class Main {
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public static void main(String[] args) throws Exception {
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List<Map<String, String>> data2 = new ArrayList<>();
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Map<String, Object> data3 = new LinkedHashMap<>(); // 値をObject型に変更
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for(int i = 0; i < 8; i++) {
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Map<String, String> data1 = new HashMap<String, String>();
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int dates1 = i + 1;
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int count1 = 245 + i + 1;
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String dates2 = String.valueOf(dates1);
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String count2 = String.valueOf(count1);
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data1.put("date", "2019/10/10 0" + dates2 + ":00:00");
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data1.put("value", count2);
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data2.add(data1);
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}
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data3.put("title", "CPU");
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data3.put("data", data2);
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System.out.println(data3);
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}
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}
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```
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**出力結果**
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96
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```
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{
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title=CPU,
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data=[{date=2019/10/10 01:00:00, value=246}, {date=2019/10/10 02:00:00, value=247}, {date=2019/10/10 03:00:00, value=248}, {date=2019/10/10 04:00:00, value=249}, {date=2019/10/10 05:00:00, value=250}, {date=2019/10/10 06:00:00, value=251}, {date=2019/10/10 07:00:00, value=252}, {date=2019/10/10 08:00:00, value=253}]
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}
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```
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ちなみに LinkedHashMap にすると格納した順番が保持できます。
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