{"componentChunkName":"component---src-templates-post-template-jsx","path":"/algo/posts/2021-03-20--001","result":{"data":{"site":{"siteMetadata":{"title":"Blog by Eunyoung","subtitle":"작업 기록 블로그","copyright":"© All rights reserved.","author":{"name":"EunYoung","twitter":"#"},"disqusShortname":"","url":"https://ssongey.github.io"}},"markdownRemark":{"id":"d6b31122-0d16-5256-bdeb-9b1074f1b4c1","html":"

문제

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import java.util.HashMap;\nimport java.util.Map;\nimport java.util.UUID;\n\nclass AlertService {\n    private final MapAlertDAO storage = new MapAlertDAO();\n\t\t\n    public UUID raiseAlert() {\n        return this.storage.addAlert(new Date());\n    }\n\t\n    public Date getAlertTime(UUID id) {\n        return this.storage.getAlert(id);\n    }\t\n}\n\nclass MapAlertDAO {\n    private final Map<UUID, Date> alerts = new HashMap<UUID, Date>();\n\t\n    public UUID addAlert(Date time) {\n    \tUUID id = UUID.randomUUID();\n        this.alerts.put(id, time);\n        return id;\n    }\n\t\n    public Date getAlert(UUID id) {\n        return this.alerts.get(id);\n    }\t\n}
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결과 및 풀이

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배웠다

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