Populating Object[][]

[MikeSmith813]

I have a HashMap and I need to fill a 2-dimential array, Object[][],
with the key-value pairs. I need to do this to supply a JTable with
the data from the HashMap.

I do not know what data is in the HashMap or what the key names are.

Can someone please show me how to do this?

Thanks!

 

[Oliver Wong]

I have a HashMap and I need to fill a 2-dimential array, Object[][],
with the key-value pairs. I need to do this to supply a JTable with
the data from the HashMap.

I do not know what data is in the HashMap or what the key names are.

Can someone please show me how to do this?

Did you read
http://java.sun.com/j2se/1.5.0/docs/api/java/util/HashMap.html ?

- Oliver

 

[Daniel Dyer]

I have a HashMap and I need to fill a 2-dimential array, Object[][],
with the key-value pairs. I need to do this to supply a JTable with
the data from the HashMap.

I do not know what data is in the HashMap or what the key names are.

Can someone please show me how to do this?

Did you read
http://java.sun.com/j2se/1.5.0/docs/api/java/util/HashMap.html ?

- Oliver

Or for an alternative approach to the underlying problem don't use the
DefaultTableModel, write your own instead:

http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/table/TableModel.html
http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/table/AbstractTableModel.html


Dan.

 

[Roedy Green]

I do not know what data is in the HashMap or what the key names are.

see http://mindprod.com/jgloss/hashmap.html
for how to enumerate the HashMap.

see http://mindprod.com/jgloss/gotchas.html#MATRIX on array
initialisation.

 

[Chris Uppal]

I do not know what data is in the HashMap or what the key names are.

[...]
Did you read
http://java.sun.com/j2se/1.5.0/docs/api/java/util/HashMap.html ?

In case it's still not obvious, Mike should look at the entrySet() and/or
keySet() methods.

-- chris

 

[hilizbabe]

You need to write some code to get the data from hashmap using
entrySet() and update the tablemodel. With QuickTable, a free JTable
based javabean, you can do this in one line

quickTable.refreshDataObject(yourHashMap.entrySet(), null);

http://quicktable.org