error

error

java.net.SocketException: java.net.ConnectException: Connection refused: connect at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:156) at com.mysql.jdbc.MysqlIO.(MysqlIO.java:276) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2592) at com.mysql.jdbc.Connection.(Connection.java:1509) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266) at java.sql.DriverManager.getConnection(DriverManager.java:525) at java.sql.DriverManager.getConnection(DriverManager.java:171) at excelDB.ExcelDB.main(Excel_DB.java:210)

how to solve dis error?

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