beginning.java

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Row;
import com.datastax.driver.core.Session;

public class beginning {
 public static void main(String[] args){
	 Cluster cluster;
		Session session;
  
		// Connect to the cluster and keyspace "demo"
	cluster = Cluster.builder().addContactPoint("127.0.0.1").build();
	session = cluster.connect("cass");

	//this part is for insertion
	for (int i=0;i<1000;i++)
	{
		session.execute("INSERT INTO cass.users (id,name) Values (" + i + " ,  'Username' )");
	}

/*
	for (int i=0;i<1000;i++)
	{
		ResultSet results = session.execute("SELECT * from users where id = " + i);
		for (Row row : results) {
		System.out.format("%s %d\n", row.getString("name"), row.getInt("id"));
		}
	}
*/

		// Insert one record into the users table

		// Use select to get the user we just entered
/*
		// Update the same user with a new age
 //session.execute("update users set age = 36 where lastname = 'Jones'");

		// Select and show the change
		results = session.execute("select * from users ");
		for (Row row : results) {
 	System.out.format("%s %d\n", row.getString("firstname"), row.getInt("age"));
		}

		// Delete the user from the users table
 //session.execute("DELETE FROM users WHERE lastname = 'Jones'");

		// Show that the user is gone
 results = session.execute("SELECT * FROM users");
 for (Row row : results) {
 	System.out.format("%s %d %s %s %s\n", row.getString("lastname"), row.getInt("age"),  row.getString("city"), row.getString("email"), row.getString("firstname"));
		}
*/
		// Clean up the connection by closing it
 cluster.close();
 }
}