How do I change the font of the static text field while using jaspers to make the PDF?

package rponte.report;import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.export.JRPdfExporter;import rponte.report.ConnectionFactory;
public class ReportGenerator {                public static void main(String[] args) {
 
                                Connection connection = null;
                                try {
 
                                                String reportName = "myreport";
                                                Map<String, String> parameters = new HashMap<String, String>();
                                                parameters.put("ACCOUNT_NO","x");
                                                parameters.put("INVOICE_DATE","z");
                                                parameters.put("SEGMENT_ID","y");
                                                parameters.put("SUBREPORT_DIR","./");
                                                //step1 load the driver class  
                                                Class.forName("oracle.jdbc.driver.OracleDriver");  
 
                                                //step2 create  the connection object  
                                                connection=DriverManager.getConnection(  
                                                "jdbc:oracle:thin:@localhost:me","system","oracle");                                                    // compiles jrxml
                                                JasperCompileManager.compileReportToFile("Corporate.jrxml");
                                                // fills compiled report with parameters and a connection
                                                JasperPrint print = JasperFillManager.fillReport("Corporate.jasper", parameters, connection);
                                                // exports report to pdf
                                                JRExporter exporter = new JRPdfExporter();
                                                exporter.setParameter(JRExporterParameter.JASPER_PRINT, print);
                                                exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, new FileOutputStream(reportName + ".pdf")); // your output goes here
 
                                                exporter.exportReport();                                } catch (Exception e) {
                                                throw new RuntimeException("It's not possible to generate the pdf report.", e);
                                } finally {
                                                // it's your responsibility to close the connection, don't forget it!
                                                if (connection != null) {
                                                                try { connection.close(); } catch (Exception e) {}
                                                }
                                }
 
                }
 
}