error

1.java.sql.SQLSyntaxErrorException: Unknown database 'example' 에러 해결

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2.java.sql.SQLException: Connection is read-only. Queries leading to data modification are not allowed 에러 해결

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3.Could not find mysql:mysql-connector-java 에러 해결

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4.(GitHub)There isn’t anything to compare. main and sim are entirely different commit histories. 에러 해결

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5.develop branch에 merge 후 발생한 conflict

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6.Cannot resolve symbol 'Value' 에러 해결

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7.Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. 에러 해결

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8.Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'text/plain;charset=UTF-8' not supported] 에러 해결

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9.Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception 에러 해결

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10.Cannot invoke "" because "" is null 에러 해결

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11.Cannot invoke "org.json.simple.JSONArray.size()" because "array" is null

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12.Cannot invoke "java.lang.Integer.intValue()" because the return value of "org.json.simple.JSONObject.get(Object)" is null 에러 해결

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13.class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap') 에러 해결

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