Bean values getting null after set method

[chandu ravalpu]

Hi

In the following jsf Program

private String positionName;

public String getPositionName() {
return positionName;
}

public void setPositionName(String positionName) {

this.positionName = positionName;

}

after entering values in jsp page the position name field getting null values?


(error message:hai
hello
java.lang.NullPointerException
at com.PositionDetailsViewBean.createPosition(PositionDetailsViewBean.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:158)
at org.ajax4jsf.framework.ajax.AjaxViewRoot.processApplication(AjaxViewRoot.java:346)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
)

can any one solve this? why it is happening so?

Thanks in Advance

[Seetharaman Venkatasamy]

Welcome to JavaRanch

chandu ravalpu wrote:
after entering values in jsp page the position name field getting null values?

can you post the code ?

[chandu ravalpu]

hi ya am sending the code

//bean class

package com;

public class PositionDetailsBean {

	private String positionName;

	public String getPositionName() {
		return positionName;
	}

	public void setPositionName(String positionName) {
		System.out.println("hai");
		this.positionName = positionName;
	System.out.println("hello");
	}
	
	
}

//viewbean

package com;

public class PositionDetailsViewBean {

	PositionDetailsDataBean positionDetailsDataBean;

	PositionDetailsService positionDetailsService;

	PositionDetailsBean positionDetailsBean;
	
	
	public PositionDetailsDataBean getPositionDetailsDataBean() {
		return positionDetailsDataBean;
	}




	public void setPositionDetailsDataBean(
			PositionDetailsDataBean positionDetailsDataBean) {
		this.positionDetailsDataBean = positionDetailsDataBean;
	}




	public PositionDetailsService getPositionDetailsService() {
		return positionDetailsService;
	}




	public void setPositionDetailsService(
			PositionDetailsService positionDetailsService) {
		this.positionDetailsService = positionDetailsService;
	}




	public String createPosition(){
		String forward = "success";
		try {
			String pname=positionDetailsBean.getPositionName();
			if( pname != null){
				PositionDetailsBean positionDetailsBean = new PositionDetailsBean();
				positionDetailsDataBean.copyProperties(positionDetailsBean, false);
				positionDetailsService.createPosition(positionDetailsBean);
			}else{
				System.out.println("no value in position details bean");
			}
				
			 
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		return forward;
	}
}

[Seetharaman Venkatasamy]

String pname=positionDetailsBean.getPositionName(); 

I dont see an Object assigned to the reference positionDetailsBean before this statement.

and please use code tag , while posting your code. this time I have added them for you