Adding to table crashes the program

[KarlNorway]

Hi Im struggeling with getteing strings to go into a table.
Here is the code that makes it fail:

public void printData(){
Iterator it = myItems.iterator();
            while(it.hasNext()) {
                Item = it.next().toString();
                System.out.println(Item);  // gives this output: 319097,PCB SIO_1,0,1
 
 // splitting it into a array of four items
String delimiter = ",";
                  
                  XMLItem = Item.split(delimiter);
                   for(int i =0; i < XMLItem.length ; i++)
                    System.out.println(XMLItem[i]);
                  System.out.println(XMLItem.length);
//                TableItem items = new TableItem(table, SWT.NONE); // when these tow lines are uncommented I get error. I have tried with this line above the while loop
//                  items.setText(XMLItem);  
            }

Here is the error output

java.lang.IllegalArgumentException: Argument cannot be null
    at org.eclipse.swt.SWT.error(SWT.java:4263)
    at org.eclipse.swt.SWT.error(SWT.java:4197)
    at org.eclipse.swt.SWT.error(SWT.java:4168)
    at org.eclipse.swt.widgets.TableItem.checkNull(TableItem.java:123)
    at org.eclipse.swt.widgets.TableItem.<init>(TableItem.java:77)
    at view.Main.printData(Main.java:354)
    at view.Main.parseXML(Main.java:238)
    at view.Main.openXML(Main.java:224)
    at view.Main$2.widgetSelected(Main.java:117)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
    at view.Main.open(Main.java:81)
    at view.Main.main(Main.java:65)

From the ine numbers in the error report I have found it to be the when I try to add to or open table

I have one other routing that puts strings from txt input into the table and it works great..

Anyone that can help a n00b out?

[Norm]

IllegalArgumentException: Argument cannot be null

What variable has a null value? What doesn't it have a non-null value?
Find the variable that is null and backtrack to find out why it does not have a value.

Your code does not show where table is given a value.

[KarlNorway]

Do you mean the code that sets up the entire table?

I think I know what happens. The button used to fill in ( open XML) is stated before the table and the buton to add into the table is stated after the table. I dont have the code in front of me rigth now.

Could this be the issue you think?

[Norm]

Is it the variable: table that is null?
You have to look at the code and see why the table variable is null?

Add some printlns to show you the execution flow and when table is given a value.

[KarlNorway]

Ok ill look at it when i have the cin front of me

[DarrylBurke]

Moved from 'New to Java'

db

[KarlNorway]

Im kinda lost here.

Here is one system.out.println of parsed item before and after split:

320077,TD30V cNODE Maxi34-St,250,3
320077
TD30V cNODE Maxi34-St
250
3

even doing it like this

String [] one = {"1","1","1","1"};
TableItem items = new TableItem(table, SWT.NONE);
			items.setText(one);

crashes the program with same error. when I do it inside the print data void. If I just put the above code inside the button function I get expected result. a 1 in every column

It could seem to me that the string array passed to the table is missing.
If I use the system out print of the splittet strings (and dont use [i] behind) I get something like this

[Ljava.lang.String;@82c01f

And I dont know what this means

[KarlNorway]

Looks like I present the data wrong to the table.

Maybe I should add a listener to the table?

[KarlNorway]

Solved it..

Error was in where I start the parser..

Main dpe = new Main();
dpe.parseXML();

Is taken from the example I have used to look at. Did nothing but destroy my application. Commented out and did just

 parseXML();

everything worked.