java.sql.SQLException: Operation not allowed after ResultSet closed

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Operation not allowed after ResultSet closed
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Operation not allowed after ResultSet closed
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Operation not allowed after ResultSet closed
via Server Fault by mossaab
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Operation not allowed after ResultSet closed
via serverfault.com by Unknown author, 2 years ago
java.sql.SQLException: Operation not allowed after ResultSet closed
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1075)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:929)
at com.mysql.jdbc.ResultSetImpl.checkClosed(ResultSetImpl.java:795)
at com.mysql.jdbc.ResultSetImpl.checkRowPos(ResultSetImpl.java:839)
at com.mysql.jdbc.ResultSetImpl.getStringInternal(ResultSetImpl.java:5657)
at com.mysql.jdbc.ResultSetImpl.getString(ResultSetImpl.java:5577)
at dbclass.MainApp.main(MainApp.java:16)

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