executeQuery从不在NetBeans IDE中返回，但在由Java运行时可以工作

Question

I am using NetBeans IDE 7.0.1 and was just testing a Microsoft SQL Server connection using JDBC from Microsoft. I have this test program:

package testsql;
import java.sql.*;
public class TestSQL {

    public static void main(String[] args) {
        Statement stmt = null;
        ResultSet rs = null;
        Connection con = null;

        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            String connectionURL = 
                    "jdbc:sqlserver://foo.bar.com:1433;" +
                    "databaseName=flintstone;integratedSecurity=true;";
            con = DriverManager.getConnection(connectionURL);
        } catch (SQLException e) {
            System.out.println("SQL Exception: " + e.toString());
        } catch (ClassNotFoundException e) {
            System.out.println("Class Not Found Exception: " + e.toString());
        }

        try {
            String SQL = con.nativeSQL("SELECT COUNT(*) AS Count FROM fred");
            stmt = con.createStatement();
            rs = stmt.executeQuery(SQL);
            while (rs.next()) {
                System.out.println("Count = " + rs.getString("Count"));
            }
        } catch (SQLException e) {
            System.out.println("SQL Exception: " + e.toString());
        }

    }
}

I have the NetBeans VM Options property set to -Djava.library.path=C:\\lib .

When I run the code in the IDE the program freezes at executeQuery and runs 'forever'. No error is returned and a time-out is not raised.

However if I build the package and then run it with java -Djava.library.path=C:\\lib -jar TestSQL.jar I get the expected data returned: Count = 7349 .

Answer 1

I have the project working in the IDE now. It turned out to be the version of the JDK I was using. Replacing JDK1.6 with JDK1.7 fixed the problem, it works as expected now.