I have a map with strings and tupleList. i am trying to get the tupleList into double array , but i am getting type cast exception. my code is --
Map<String, TupleList> results = null; -- Some data in it and TupleList has int or double value.
public void drawGraph(){
Object[] test = new Object[results.size()];
int index = 0;
for (Entry<String, TupleList> mapEntry : results.entrySet()) {
test[index] = mapEntry.getValue();
index++;
}
BarChart chart = new BarChart();
chart.setSampleCount(4);
String[] values = new String[test.length];
for(int i = 0; i < test.length; i++)
{
values[i] = (String) test[i];
}
// double[] values = new double[] {32,32,65,65};
String[] sampleLabels = new String[] {"deny\nstatus", "TCP\nrequest", "UPD\nrequest", "ICMP\nrequest"};
String[] barLabels = new String[] {"STATUS", "TCP", "UDP", "PING"};
//chart.setSampleValues(0, values);
chart.setSampleColor(0, new Color(0xFFA000));
chart.setRange(0, 88);
chart.setFont("rangeLabelFont", new Font("Arial", Font.BOLD, 13));
error----
java.lang.ClassCastException: somePackagename.datamodel.TupleList cannot be cast to java.lang.String
at com.ibm.biginsights.ExampleAPI.drawGraph(ExampleAPI.java:177)
at com.ibm.biginsights.ExampleAPI.main(ExampleAPI.java:95)
i am getting exception @
String[] values = new String[test.length];
for(int i = 0; i < test.length; i++)
{
values[i] = (String) test[i];
Thanks
I am assuming that the error is taking place here: values[i] = (String) test[i];
. The problem is that you are trying to throw an object of type TupleList
into a string. What you need to do, is to call the .toString()
method, that should give you a string representation of the object.
Note however, you will have to override the toString()
method within the TupleList
class so that you can get a string representation of the object which suits your needs.
So in short, just doing test[i].toString()
will most likely yield something along the lines of this: TupleList@122545
. What you need to do is this:
public class TupleList
...
@Override
public String toString()
{
return "...";
}
...
Obviously your test array contains TupleLists. You add them at
Object[] test = new Object[results.size()];
int index = 0;
for (Entry<String, TupleList> mapEntry : results.entrySet()) {
test[index] = mapEntry.getValue();
index++;
}
And then you cast TupleList to String ang get ClassCastException You could use toString if you want.
values[i] = test[i].toString();
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