![]() ![]() The last packet successfully received from the server was 130┬а909 milliseconds ago. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.Īt .readFully(MysqlIO.java:2529) ~Īt .reuseAndReadPacket(MysqlIO.java:2979) ~ The last packet sent successfully to the server was 0 milliseconds ago.Īt 0(Native Method) ~Īt (Unknown Source) ~Īt (Unknown Source) ~Īt .newInstance(Unknown Source) ~Īt .handleNewInstance(Util.java:407) ~Īt .createCommunicationsException(SQLError.java:1116) ~Īt .reuseAndReadPacket(MysqlIO.java:3082) ~Īt .reuseAndReadPacket(MysqlIO.java:2968) ~Īt .checkErrorPacket(MysqlIO.java:3516) ~Īt .sendCommand(MysqlIO.java:1986) ~Īt .sqlQueryDirect(MysqlIO.java:2140) ~Īt .execSQL(ConnectionImpl.java:2626) ~Īt .executeInternal(PreparedStatement.java:2111) ~Īt .executeQuery(PreparedStatement.java:2273) ~Īt (Query.java:681) ~Ĭaused by: java.io.EOFException: Can not read response from server. Also you should always close the database connection once you complete interacting with database by calling close() method of the Connection object.Краш-лог The last packet successfully received from the server was 130┬а909 milliseconds ago. Therefore, when you create a Connection object, you should always put it inside a try catch block. in such cases, JDBC throws a SQLException. ![]() When connecting to MySQL, anything could happens e.g., database server is not available, wrong user name or password, etc. String url = "jdbc:mysql://localhost:3306/mysqljdbc" Ĭonn = DriverManager.getConnection(url, user, password) ![]() Connecting to MySQL databaseįirst, you need to import three classes: SQLException, DriverManager, and Connection from the java.sql.* package. Third, click on the Add JAR folder button, browse to the location where you installed MySQL Connector/J, and choose the JAR file as screenshot below after that click OK button. Second, on the left hand side of the project properties dialog, from the Categories section, choose Libraries item. The project properties dialog will appear. To load MySQL Connector/J into your program you follow three steps below:įirst, in NetBeans IDE, from project name, right mouse click and choose properties menu item. ![]() Loading MySQL Connector/J into your program Then you can use this Connection object to execute queries.
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