Database single connection

[chicago1985]

I would like to create a single Database connection point that I can use for several of my classes in my Java Web Application.

Here is my ConnectionManager Class:

public class ConnectionManager {
    private static Connection activeConnection = null;
    public static Connection getConnection() {
        if (activeConnection = null) {
            Class.forName("OracleThinInfoHere...");
            activeConnection = DriverManager.getConnection("jdbc:oracle:thin:@myname:1234:orcl", "scott", "tiger");
        }
        return activeConnection;
    }
}

Now how would I access the ConnectionManager in each one of my classes?

For example here is one:

public class MainClass
{
 
public ConnectionManager.getConnection();
public Connection connection;
 
//I tried my db connection as this and it didnt return any results
public MainClass(connection)
{
     this.connection = ConnectionManager.getConnection();   
}
 
public int matcher(BeanClass abc)
{
     try
     {
         new OtherDbClass(connection).insertDbMethod(abc);
     }
     catch(Exception e)
     {
         e.printStackTrace();
     }
     finally
     { 
        //closing statements here
     }

Another Class looks like this:

public class OtherDbClass {
   private Connection connection;
   public OtherDbClass(Connection connection)
   { 
      this.connection = ConnectionManager.getConnection();
   }
 
public int insertDbMethod(BeanClass abc) 
{ 
...
...
}

Please advise.

[heat84]

1.
public class OtherDbClass {
2.
private Connection connection;
3.
public OtherDbClass(Connection connection)
4.
{
5.
this.connection = ConnectionManager.getConnection();
6.
}
7.

8.
public int insertDbMethod(BeanClass abc)
9.
{
10.
...
11.
...
12.
}

There is no need for passing the connection object to the OtherDB constructor so you can remove that Connection parameter. When you instantiate an object of the OtherDB class , the connection will be created.

[chicago1985]

1.
public class OtherDbClass {
2.
private Connection connection;
3.
public OtherDbClass(Connection connection)
4.
{
5.
this.connection = ConnectionManager.getConnection();
6.
}
7.

8.
public int insertDbMethod(BeanClass abc)
9.
{
10.
...
11.
...
12.
}

There is no need for passing the connection object to the OtherDB constructor so you can remove that Connection parameter. When you instantiate an object of the OtherDB class , the connection will be created.

Thanks, I wasnt sure if it is okay to put a Database connection in a constructor?

[heat84]

Hope its working out