Ireport+Lista

package ireport;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRBeanArrayDataSource;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.engine.xml.JRXmlLoader;
import net.sf.jasperreports.view.JasperViewer;

public class report {

	public static void main(String[] args) throws SQLException, JRException {
		
		List a= new ArrayList();
		//for(int i=0; i<5; i++){
		a.add(1+"Olá"+"Ui");
		a.add("oi");
		//JRBeanCollectionDataSource jr = new JRBeanCollectionDataSource(a);
		JRDataSource jr = new JRBeanArrayDataSource(a.toArray());
		JasperPrint impressao;
		try {
			Map parametros = new HashMap();
			//parametros.put("NOME",a.get(1));
	        
	                JasperPrint resultado = JasperFillManager.fillReport( "c:\\sub.jasper", parametros, jr );
	                JasperViewer.viewReport( resultado, false );

		} catch (JRException e) {
			e.printStackTrace();
		} catch (Exception e){
			System.out.println(e);
		}

		           
		 
		
	
		}
		
	   }

for (int i=0;i<a.size();i++){  
		      
		     parametros.put("NOME",a.get(i));  
		}

ArrayList<HashMap><String,Object>>

public static void init() {
        try {
            ResultSet resultSetMasterReport = Conexao.executeQuery("select * from produto order by 1");
            
            List listaMasterReport = new ArrayList();
            
            while (resultSetMasterReport.next()) {
                HashMap<String,Object> atributosMasterReports = new HashMap<String,Object>();
                atributosMasterReports.put("CD_PRODUTO",resultSetMasterReport.getObject("CD_PRODUTO"));
                atributosMasterReports.put("NOME",resultSetMasterReport.getObject("NOME"));
                atributosMasterReports.put("DESCRICAO",resultSetMasterReport.getObject("DESCRICAO"));
                atributosMasterReports.put("FIGURA",resultSetMasterReport.getObject("FIGURA"));
                atributosMasterReports.put("CATEGORIA",resultSetMasterReport.getObject("CATEGORIA"));
                
                ResultSet resultSetSubReport = Conexao.executeQuery("select * from item where cd_produto = "
                        +"'"+resultSetMasterReport.getObject("CD_PRODUTO")+"' order by 1");
                
                List listaSubReport = new ArrayList();
                
                while(resultSetSubReport.next()){
                    HashMap<String,Object> atributosSubReports = new HashMap<String,Object>();
                    atributosSubReports.put("CD_ITEM",resultSetSubReport.getObject("CD_ITEM"));
                    atributosSubReports.put("DESCRICAO",resultSetSubReport.getObject("DESCRICAO"));
                    atributosSubReports.put("PRECO",resultSetSubReport.getObject("PRECO"));
                    atributosSubReports.put("QTD_ESTOQUE",resultSetSubReport.getObject("QTD_ESTOQUE"));
                    atributosSubReports.put("STATUS",resultSetSubReport.getObject("STATUS"));
                
                    listaSubReport.add(atributosSubReports);
                }
                
                JRMapCollectionDataSource subDataSource= new JRMapCollectionDataSource(listaSubReport);
        
                
                
                atributosMasterReports.put("SUB_DATA_SOURCE",subDataSource);
                
                listaMasterReport.add(atributosMasterReports);
            }
           
        JRMapCollectionDataSource masterDataSource= new JRMapCollectionDataSource(listaMasterReport);
        
        JasperPrint jasperPrint = JasperFillManager.fillReport("Produtos.jasper",
                    new HashMap(), masterDataSource);

        JasperViewer.viewReport(jasperPrint);
        
        
        String caminhoArquivoPdf = "c:\\relatorio.pdf";
        JasperExportManager.exportReportToPdfFile(jasperPrint, caminhoArquivoPdf);
			String[] exec = { "cmd.exe", "/c", "start", "\"\"",
					"\"" + caminhoArquivoPdf + "\"" };

			Runtime.getRuntime().exec(exec);
        
        
        
        } catch (IOException ex) {
            ex.printStackTrace();
        } catch (JRException ex) {
            ex.printStackTrace();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }

    }

List<HashMap> a = new ArrayList<HashMap>();
 
        /** EXEMPLO */
        for(int i =0; i < 10 ; i++){
            HashMap<String, String> teste = new HashMap<String, String>();
            teste.put("teste", "Ola "+i);
            a.add(teste);
        }
       
        JRDataSource jr = new JRMapCollectionDataSource(a);

public class Teste2 {
	

	public static void main(String[] args) {
		
		ArrayList<String[]> lista = new ArrayList();
		lista.add(new String[]{"Marciano","José"});
		new report().gera(lista);
	}
		
   }

public class report {

	
		public void gera(ArrayList array){
		  List<HashMap> a = new ArrayList<HashMap>();
		    
		    /** EXEMPLO */
		    for(int i =0; i < array.size() ; i++){
		        HashMap<String, String> teste = new HashMap<String, String>();
		        teste.put("nome", (String) array.get(i));
		        a.add(teste);
		    }
		   
		    JRDataSource jr = new JRMapCollectionDataSource(a);
		JasperPrint impressao;
		try {
			Map parametros = new HashMap();
			//parametros.put("NOME",a.get(1));
	        
	                JasperPrint resultado = JasperFillManager.fillReport( "c:\\sub.jasper", parametros, jr );
	                JasperViewer.viewReport( resultado, false );

		} catch (JRException e) {
			e.printStackTrace();
		} catch (Exception e){
			System.out.println(e);
		}

		           
		 
		
	
		}
		
	   }

Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.String;
	at ireport.report.gera(report.java:39)
	at ireport.Teste2.main(Teste2.java:29)