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java.lang.NullPointerException at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:586) at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:524) at com.mysql.jdbc.PreparedStatement.toString(PreparedStatement.java:3551) at java.lang.String.valueOf(Unknown Source) at java.lang.StringBuffer.append(Unknown Source) at com.mysql.jdbc.trace.Tracer.printParameters(Tracer.aj:240) at com.mysql.jdbc.trace.Tracer.printEntering(Tracer.aj:167) at com.mysql.jdbc.trace.Tracer.entry(Tracer.aj:126) at com.mysql.jdbc.trace.Tracer.ajc$before$com_mysql_jdbc_trace_Tracer$1$f51c62b8(Tracer.aj:45) at com.mysql.jdbc.Connection.registerStatement(Connection.java) at com.mysql.jdbc.Statement.<init>(Statement.java:197) at com.mysql.jdbc.PreparedStatement.<init>(PreparedStatement.java:442) at com.mysql.jdbc.ServerPreparedStatement.asSql(ServerPreparedStatement.java:347) at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:524) at com.mysql.jdbc.ServerPreparedStatement.toString(ServerPreparedStatement.java:2327) at java.lang.String.valueOf(Unknown Source) at java.lang.StringBuffer.append(Unknown Source) at com.mysql.jdbc.trace.Tracer.printParameters(Tracer.aj:240) at com.mysql.jdbc.trace.Tracer.printEntering(Tracer.aj:167) at com.mysql.jdbc.trace.Tracer.entry(Tracer.aj:126) at com.mysql.jdbc.trace.Tracer.ajc$before$com_mysql_jdbc_trace_Tracer$1$f51c62b8(Tracer.aj:45) at com.mysql.jdbc.Connection.registerStatement(Connection.java) at com.mysql.jdbc.Statement.<init>(Statement.java:197) at com.mysql.jdbc.PreparedStatement.<init>(PreparedStatement.java:423) at com.mysql.jdbc.ServerPreparedStatement.<init>(ServerPreparedStatement.java:280) at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4363) at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4301) at com.tutorialspoint.JDBCBatchUpdateExample.batchInsertRecordsIntoTable(JDBCBatchUpdateExample.java:49) at com.tutorialspoint.JDBCBatchUpdateExample.main(JDBCBatchUpdateExample.java:29)