"AWT-EventQueue-0" java.lang.NullPointerException

Question

Bhargavi V 0 Light Poster

14 Years Ago

Hi all,

I am getting the following error when I am loading the data into the ComboBox

and the ComboBoxes are linked to each other

I am getting the errors as below

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at client.cpm.dailyT20.CBRCPMDailyT20View.appComboBox_actionPerformed(CBRCPMDailyT20View.java:235)
    at client.cpm.dailyT20.CBRCPMDailyT20View.access$1(CBRCPMDailyT20View.java:234)
    at client.cpm.dailyT20.CBRCPMDailyT20View$2.actionPerformed(CBRCPMDailyT20View.java:227)
    at javax.swing.JComboBox.fireActionEvent(Unknown Source)
    at javax.swing.JComboBox.contentsChanged(Unknown Source)
    at javax.swing.JComboBox.intervalRemoved(Unknown Source)
    at javax.swing.AbstractListModel.fireIntervalRemoved(Unknown Source)
    at javax.swing.DefaultComboBoxModel.removeAllElements(Unknown Source)
    at javax.swing.JComboBox.removeAllItems(Unknown Source)
    at client.cpm.dailyT20.CBRCPMDailyT20View.appSetComboBox_actionPerformed(CBRCPMDailyT20View.java:187)
    at client.cpm.dailyT20.CBRCPMDailyT20View.access$0(CBRCPMDailyT20View.java:183)
    at client.cpm.dailyT20.CBRCPMDailyT20View$1.actionPerformed(CBRCPMDailyT20View.java:175)
    at javax.swing.JComboBox.fireActionEvent(Unknown Source)
    at javax.swing.JComboBox.setSelectedItem(Unknown Source)
    at javax.swing.JComboBox.setSelectedIndex(Unknown Source)
    at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(Unknown Source)
    at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at javax.swing.plaf.basic.BasicComboPopup$1.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

and I will place the code as below

package cbrdataejb.session;

import java.rmi.RemoteException;

import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;

import cbrdataejb.database.CBRMSSQLDataBean;
import cbrutil.CBRConstants;

import com.borland.dx.dataset.DataSetData;
import com.borland.dx.sql.dataset.Load;
import com.borland.dx.sql.dataset.QueryDataSet;
import com.borland.dx.sql.dataset.QueryDescriptor;

@Stateful
public class CBRCPMDailyT20FactTable extends CBRMSSQLDataBean implements CBRCPMDailyT20FactTableRemote {
    public static final String RemoteJNDIName = CBRConstants.EARFileName
            + CBRCPMDailyT20FactTable.class.getSimpleName() + "/remote";

    public CBRCPMDailyT20FactTable() {
    }

    public void init(String db2DataSource, String msSqlDataSource, String portServer) {
        super.create(db2DataSource, msSqlDataSource, portServer);
    }

    @Remove
    public void remove() {
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public DataSetData getAppSetList() throws RemoteException {
        QueryDataSet queryDataSet = new QueryDataSet();
        try {
            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("SELECT APPLICATION_SET as IDAppSet, count(*)");
            selectQuery.append("  FROM T20_Summary");
            selectQuery.append(" GROUP BY APPLICATION_SET");
            selectQuery.append(" ORDER BY APPLICATION_SET");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getAppSetList", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public DataSetData getAppList(String appSet) throws RemoteException {
        QueryDataSet queryDataSet = new QueryDataSet();     
        String appSetFil = "";
        if (appSet.equals("All Application") == false) {
                appSetFil = appSet;
            }                   
        try {
            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("SELECT distinct APPLICATION as IDApp, count(*)");
            selectQuery.append("  FROM T20_Summary");           
            selectQuery.append(" where APPLICATION_SET LIKE'%" + appSetFil + "%'");                     
            selectQuery.append(" GROUP BY APPLICATION");
            selectQuery.append(" ORDER BY APPLICATION");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getAppList", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public DataSetData getAppList() throws RemoteException {        
        QueryDataSet queryDataSet = new QueryDataSet();
        try {
            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("SELECT distinct APPLICATION as IDApp, count(*)");
            selectQuery.append("  FROM T20_Summary");           
            selectQuery.append(" GROUP BY APPLICATION");
            selectQuery.append(" ORDER BY APPLICATION");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getAppList", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    //public DataSetData getPackageList(String appSet, String app) throws RemoteException {
    public DataSetData getPackageList(String app) throws RemoteException {
        QueryDataSet queryDataSet = new QueryDataSet();
        //String appSetFil = "";
        String appFil = "";
        /*if (appSet.equals("All Application") == false) {
                appSetFil = appSet;
            }*/     
        if (app.equals("All Application") == false) {
            appFil = app;
            }   
        try {
            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("SELECT distinct PACKAGE as IDPackage, count(*)");
            selectQuery.append("  FROM T20_Summary");
            selectQuery.append(" where APPLICATION_SET LIKE'%" + appFil + "%'");        
            //selectQuery.append(" AND APPLICATION LIKE'%" + appFilP + "%'");       
            selectQuery.append(" GROUP BY PACKAGE ");
            selectQuery.append(" ORDER BY PACKAGE ");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getPackageList", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public DataSetData getPackageList() throws RemoteException {
        QueryDataSet queryDataSet = new QueryDataSet();
        try {
            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("SELECT distinct PACKAGE as IDPackage, count(*)");
            selectQuery.append("  FROM T20_Summary");
            selectQuery.append(" GROUP BY PACKAGE ");
            selectQuery.append(" ORDER BY PACKAGE ");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getPackageList", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

    @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
    public DataSetData getData(String appSet, String app, String packageS ) throws RemoteException {
    //public DataSetData getData(String appSet, String app, String packageS ) throws RemoteException {
        QueryDataSet queryDataSet = new QueryDataSet();
    try {

            // set value for filter
            String appSetFil = "";
            String appFil = "";
            String packageFil = "";

            if (appSet.equals("All Application") == false) {
                 appSetFil = appSet;
            } 
            if (app.equals("All Application") == false) {
                 appFil = app;
            }
            if (packageS.equals("All Package") == false) {
                 packageFil = packageS;
            }

            // Set and open the connection if is not already open!
            if (!(m_msSqlDatabase.isOpen())) {
                m_msSqlDatabase.setConnection(m_msSqlDatabase.getDataSource().getConnection());
            }
            StringBuffer selectQuery = new StringBuffer();
            selectQuery.append("select APPLICATION_SET as ApplicationSet,");
            selectQuery.append("       APPLICATION as Application,");
            selectQuery.append("       PACKAGE as Package,");
            selectQuery.append("       SUCCESS_EXECUTIONS as SE,");
            selectQuery.append("       SUCCESS_MIN_TIME   as SE_Min,");
            selectQuery.append("       SUCCESS_MAX_TIME   as SE_Max,");
            selectQuery.append("       SUCCESS_AVG_TIME   as SE_Avg, ");
            selectQuery.append("       FAILED_EXECUTIONS  as FE,");
            selectQuery.append("       FAILED_MIN_TIME    as FE_Max,");
            selectQuery.append("       FAILED_MAX_TIME    as FE_Min,");
            selectQuery.append("       FAILED_AVG_TIME    as FE_Avg,");
            selectQuery.append("       LAST_EXECUTION_DATE as Last_Execution");
            selectQuery.append("       from T20_Summary");
            selectQuery.append(" where ");
            if (appSet.equals("All Application") == false) {
                selectQuery.append(" APPLICATION_SET LIKE'" + appSetFil + "'AND");
            }
            selectQuery.append(" APPLICATION LIKE '%" + appFil + "%'");
            selectQuery.append(" AND PACKAGE LIKE '%" + packageFil + "%'");
            //selectQuery.append(" where APPLICATION_SET LIKE'%" + appSetFil + "%'");
            //selectQuery.append(" AND APPLICATION LIKE '%" + appFil + "%'");
            //selectQuery.append(" AND PACKAGE LIKE'%" + packageFil + "%'");                        
            selectQuery.append(" order by LAST_EXECUTION_DATE desc, APPLICATION_SET , APPLICATION, PACKAGE");
            queryDataSet.setQuery(new QueryDescriptor(this.m_msSqlDatabase, selectQuery.toString(), null,
                    true, Load.ALL));
            queryDataSet.open();
            return DataSetData.extractDataSet(queryDataSet);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RemoteException("getData", e);
        } finally {
            try {
                queryDataSet.close();
                this.close();
            } catch (Exception e) {
            }
        }
    }

}

Hoping anyone can help as soon as possible

Thanks in advance.

java

Edited 11 Years Ago by mike_2000_17 because: Fixed formatting

2 Contributors
5 Replies
575 Views
6 Hours Discussion Span
Latest Post 14 Years Ago Latest Post by Bhargavi V

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thamilvaanan 0 Newbie Poster · Answer 1 · 2010-09-15T18:39:06+00:00

Please post you code with in code-tags. else hard to read.
Only looking at the Exception we can guess that your trying to use an object which is null.

>>>>java.lang.NullPointerException

Bhargavi V 0 Light Poster · Answer 2 · 2010-09-15T18:44:52+00:00

can you please tell me how to do that because I amnew to this blog

thamilvaanan 0 Newbie Poster · Answer 3 · 2010-09-15T18:52:44+00:00

In the box in which u post your code and message there is a option button (CODE)
click on that then u get the code tags.

Post your code in between that tags.

system.out.println("YOur code");

Bhargavi V 0 Light Poster · Answer 4 · 2010-09-15T18:55:42+00:00

I had posted as new thread you can view it
and give me reply and sopllution
please

I will be very thank full to you

Bhargavi V 0 Light Poster · Answer 5 · 2010-09-15T19:06:20+00:00

java.lang.NullPointerException

will you please view this thread which I had made the code by using CODE tags

thanks in advance