JDBC4Example.java

package java6.jdbc;

/**
 * Java 6 JDBC 4.0 Enhancements Example Demonstrates improved database connectivity
 * NOTE: This is a conceptual example. Actual database connection requires database driver.
 */
public class JDBC4Example
{
	public static void main(String[] args)
	{
		System.out.println("=== Java 6 JDBC 4.0 Enhancements ===\n");

		System.out.println("JDBC 4.0 introduced several improvements:\n");

		System.out.println("1. Automatic Driver Loading");
		System.out.println("-------------------------");
		System.out.println("""
				// JDBC 4.0 automatically loads drivers from classpath
				// No need for Class.forName() in most cases
				
				// Old way (Java 1.1-5)
				Class.forName("com.mysql.jdbc.Driver");
				Connection conn = DriverManager.getConnection(url, user, password);
				
				// New way (Java 6+)
				// Driver is automatically loaded
				Connection conn = DriverManager.getConnection(url, user, password);
				""");

		System.out.println("\n2. Better Exception Handling");
		System.out.println("---------------------------");
		System.out.println("""
				// SQLException now implements Iterable<Throwable>
				try {
				    // Database operations
				} catch (SQLException e) {
				    // Iterate through exception chain
				    for (Throwable t : e) {
				        System.out.println("Exception: " + t.getMessage());
				    }
				}
				""");

		System.out.println("\n3. SQLXML Support");
		System.out.println("---------------");
		System.out.println("""
				// Support for SQL XML data type
				SQLXML xml = connection.createSQLXML();
				xml.setString("<root><element>value</element></root>");
				preparedStatement.setSQLXML(1, xml);
				""");

		System.out.println("\n4. RowId Support");
		System.out.println("--------------");
		System.out.println("""
				// Support for RowId data type
				RowId rowId = resultSet.getRowId("id");
				preparedStatement.setRowId(1, rowId);
				""");

		System.out.println("\nKey Enhancements:");
		System.out.println("- Automatic driver loading");
		System.out.println("- Better exception handling");
		System.out.println("- SQLXML support");
		System.out.println("- RowId support");
		System.out.println("- National Character Set support");
		System.out.println("- Wrapper pattern support");

		System.out.println("\nBenefits:");
		System.out.println("- Less boilerplate code");
		System.out.println("- Better error handling");
		System.out.println("- More data type support");
		System.out.println("- Easier to use");

		System.out.println("\nNote: This example is conceptual.");
		System.out.println("Actual implementation requires database driver and database setup.");
	}
}