How to connect db2?

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i got error “java.lang.ClassNotFoundException: com.ibm.db2.jcc.DBDriver”

I imported the driver, but can not make it working?

import java.sql.Connection ;
import java.sql.DriverManager ;
import java.sql.ResultSet ;
import java.sql.PreparedStatement ;
import java.sql.ResultSetMetaData

import com.ibm.db2.jcc.DB2Driver
import java.sql.Statement ;
import java.sql.SQLException;

def getactivationId()  {
	

	try {
		Class.forName("com.ibm.db2.jcc.DBDriver")
	}
	catch (ClassNotFoundException e) {
		System.out.println("Please check the path of DB2 driver")
		e.printStackTrace()
	}
	System.out.println("DB2 driver is loaded successfully!")