java.lang.NullPointerException

[Former Member]

hi

my app is showing this error while deploying..

can any1 explain??

java.lang.NullPointerException

at java.math.BigDecimal.multiply(BigDecimal.java:412)

at com.sap.tut.wd.tutwd_table_init.tablecomp.TableComp.getProductTOTAL_PER_ARTICLE(TableComp.java:184)

at com.sap.tut.wd.tutwd_table_init.tablecomp.wdp.InternalTableComp.getProductTOTAL_PER_ARTICLE(InternalTableComp.java:159)

at com.sap.tut.wd.tutwd_table_init.tablecomp.wdp.IPublicTableComp$IProductElement.wdGetObject(IPublicTableComp.java:437)

at com.sap.tc.webdynpro.progmodel.context.MappedNodeElement.wdGetObject(MappedNodeElement.java:351)

at com.sap.tc.webdynpro.progmodel.context.AttributePointer.getObject(AttributePointer.java:141)

at com.sap.tc.webdynpro.clientserver.data.DataContainer.getAndFormat(DataContainer.java:1066)

at com.sap.tc.webdynpro.clientserver.data.DataContainer.getAndFormat(DataContainer.java:1038)

at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.TextView.getText(TextView.java:812)

at com.sap.tc.webdynpro.clientimpl.html.uielib.standard.uradapter.TextViewAdapter.getText(TextViewAdapter.java:270)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.TextViewRenderer.render(TextViewRenderer.java:40)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:294)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:102)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableCellRenderer.renderSapTableGenericCellFragment(SapTableCellRenderer.java:1201)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableCellRenderer.renderSapTableCellFragment(SapTableCellRenderer.java:226)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableCellRenderer.render(SapTableCellRenderer.java:71)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:294)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:102)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableRowRenderer.renderSapTableRowFragment(SapTableRowRenderer.java:90)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableRowRenderer.render(SapTableRowRenderer.java:41)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:294)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:102)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableDefaultBodyRenderer.renderSapTableDefaultBodyFragment(SapTableDefaultBodyRenderer.java:168)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableDefaultBodyRenderer.render(SapTableDefaultBodyRenderer.java:36)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:294)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:102)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.SapTableRenderer.renderSapTableFragment(SapTableRenderer.java:570)

[former_member187990]

Hi,

The parameter for the method multiply holds null value.

Check the parameters.

Regards

Satish Kumar SV

[Former Member]

BigDecimal total=new BigDecimal(0),pricePerProduct;

int n= wdContext.nodeProduct().size();

try {

for(int i=0;i<n;++i)

{

total=total.add(wdContext.nodeProduct().getProductElementAt(i).getTOTAL_PER_ARTICLE());

}

[Former Member]

Hi,

Have u initialized the arraylist total as

ArrayList total=new ArrayList();

before using it?

Also, there is no need of assigning total to total.

So

total.add(wdContext.nodeProduct().getProductElementAt(i).getTOTAL_PER_ARTICLE());

is enough.

Also check whether wdContext.nodeProduct() is null beforre taking size.

Regards

Fahad Hamsa

[Former Member]

I don't think this is the code that causes the NPE. The stacktrace talks about <b>multiply</b>.

Armin

[Former Member]

Hi Kanwalpreet,

Can u send the code for TableComp.getProductTOTAL_PER_ARTICLE () ??What u r doing on line 184?

regards

Sumit

[Former Member]

Hi,

The the parameter that u r passing to the BigDecimal.multiply(multipland) is getting null value.so the exception is raised.

Thanks

ritu

[Former Member]

Hi,

Check this link clearly explained in this threads,