Null pointer exception

[Former Member]

Hi Experts,

I'm Getting null pointer exception while setting some value to the the text box UI elemnt which is binded to model attribute. Suggest me in this.

Regards,

Suman

[Former Member · Accepted solution]

Hi Suman

Null pointer exception means that u have tried to access a parameter while it is still null.

If u post the code it will be easier to help u.

Nitsan

[Former Member · Accepted solution]

public void wdDoInit()

{

//@@begin wdDoInit()

int month=0,year=0,day=0;

String month1,day1,year1;

IWDMessageManager manager = wdComponentAPI.getMessageManager();

IWDClientUser user = WDClientUser.getLoggedInClientUser();

String logUser = user.getSAPUser().getUniqueName();

// manager.reportSuccess(logUser);

wdContext.currentContextElement().setUserid(logUser);

wdThis.wdGetAPPController().executeBapi_Employee_Getdata_Input();

if(wdContext.nodeNominee().size()==0)

{

Calendar cal=Calendar.getInstance();

month=cal.get(Calendar.MONTH)+1;

if(month==1||month==2||month==3||month==4||month==5||month==6||month==7||month==8||month==9)

{

month1="0"+month;

}

else

{

month1=""+month;

}

manager.reportSuccess(month1);

day = cal.get(Calendar.DAY_OF_MONTH);

if(day==1||day==2||day==3||day==4||day==5||day==6||day==7||day==8||day==9)

{

day1= "0"+day;

}

else

{

day1=""+day;

}

year = cal.get(Calendar.YEAR);

year1=""+year;

String strFormat=day1"."month1"."year1;

manager.reportSuccess(strFormat);

wdContext.currentOutput_NomineeElement().setBegda(strFormat);

wdContext.currentOutput_NomineeElement().setEndda("31.12.2008");

wdThis.wdGetAPPController().executeZ_Hrfm_Nominee_Disp_Input();

Note:-Both Begda and Endda are string parameters in the backend

Edited by: sumankumar kurimilla on Dec 9, 2008 11:43 AM

[former_member192434 · Accepted solution]

i think you need to correct this line of code, comparing node Size(which is 0) with 0

if(wdContext.nodeNominee().size()==0)

[Former Member · Accepted solution]

I have changed the code as you said but still i'm facing the issue.

I'm passing the correct arguments to the model attributes. Also i Have tested the output for those attributes,which is proper .

int month=0,year=0,day=0;

String month1,day1,year1;

IWDMessageManager manager = wdComponentAPI.getMessageManager();

IWDClientUser user = WDClientUser.getLoggedInClientUser();

String logUser = user.getSAPUser().getUniqueName();

// manager.reportSuccess(logUser);

wdContext.currentContextElement().setUserid(logUser);

wdThis.wdGetAPPController().executeBapi_Employee_Getdata_Input();

if(wdContext.nodeNominee().isEmpty())

{

Calendar cal=Calendar.getInstance();

month=cal.get(Calendar.MONTH)+1;

if(month==1||month==2||month==3||month==4||month==5||month==6||month==7||month==8||month==9)

{

month1="0"+month;

}

else

{

month1=""+month;

}

manager.reportSuccess(month1);

day = cal.get(Calendar.DAY_OF_MONTH);

if(day==1||day==2||day==3||day==4||day==5||day==6||day==7||day==8||day==9)

{

day1= "0"+day;

}

else

{

day1=""+day;

}

year = cal.get(Calendar.YEAR);

year1=""+year;

String strFormat=day1"."month1"."year1;

manager.reportSuccess(strFormat);

wdContext.currentOutput_NomineeElement().setBegda(strFormat);

wdContext.currentOutput_NomineeElement().setEndda("31.12.2008");

[Former Member · Accepted solution]

Please post the exception stack trace. Probably the expression

wdContext.currentOutput_NomineeElement()

is null.

You might also consider to use a SimpleDateFormat for the date formatting.

Armin

[Former Member · Accepted solution]

HI amin,

Here the Begda and Endda both are String type attributes.So need of converting it to date format from string types.

Regards,

Suman.

Edited by: sumankumar kurimilla on Dec 9, 2008 12:57 PM

[Former Member · Accepted solution]

That's not what I asked for.

Armin

[Former Member · Accepted solution]

Thanks alot issue resolved that is because wrong setting of arguments to the import parameters.

Regards,

Suman

[Former Member]

Thanks alot for the support.

[Former Member]

Hi

I guess your problem is in this condition:

wdContext.nodeNominee().size()==0

U can not ask for size when the parameter is null.

U should change the condition to something like :

wdContext.nodeNominee().isEmpty()

Hope it helps

Nitsan

[Former Member]

Hi,

post the complete error trace ?

Regards,

ramesh