Geoff Jefferson

>> lso, there is a forum here at the Java Moose Saloon that can answer GUI questions
specifically, see the Swing forum for this.

Ooops, your already here. My apologies. I've been between forums and forgot where I was!

>> here is custom Table code but I want to add it in GUI Builder Netbeans. how can we do this.

If you want to add a JTable to your GUI in NetBeans you can do this from within the IDE.
There is a palette that enables you to add components there.

Also, there is a forum here at the Java Moose Saloon that can answer GUI questions
specifically, see the Swing forum for this.

G.

Okay, why aren't my links working?

http://download.oracle.com/javase/tutorial/uiswing/events/intro.html

My guess would be as many as you need base on what you want from
your component.

Take a look at:

http://download.oracle.com/javase/tutorial/uiswing/events/intro.html


G.

http://download.oracle.com/javase/tutorial/java/javaOO/classvars.html

Sorry, this link should work.

G.

You have declared many members (variables).
Have you assigned anything to them?

Take a look at:

http://download.oracle.com/javase/tutorial/java/javaOO/classvars.html

G.

Awesome!
Thank you.

>> The body of the for loops does what?

That's where I'm having trouble. I can't figure out how to assign, or copy obj to a new array.

I cannot figure out how to copy array from ObjectInputStream beginning on line 95.

package tabledemo; import java.awt.BorderLayout; import java.io.EOFException; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InvalidClassException; import java.io.NotSerializableException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.StreamCorruptedException; import java.util.Arrays; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; public class TableDemo { JTable table; private FileOutputStream fOut = null; private ObjectOutputStream oOs = null; private FileInputStream fIn = null; private ObjectInputStream oIS = null; private void save() { Object[][] array1 = new Object [table.getRowCount()][table.getColumnCount()]; for ( int i = 0; i < array1.length ; ++i) { for ( int j = 0; j < table.getColumnCount() ; ++j ) { array1[i][j] = table.getValueAt(i, j); System.out.println("save values are: " + array1[i][j] ); } } writeArrayToFile(array1, "C:\\Air\\HVACData"); } protected void writeArrayToFile( Object[][] array, String filePath ) { try { fOut = new FileOutputStream(filePath); oOs = new ObjectOutputStream(fOut); System.out.println("Array size is: " + array.length); for ( int i = 0; i < array.length; ++i) { for ( int j = 0; j < array[i].length; ++j ) { System.out.println("Value is: " + array[i][j]); } } oOs.writeObject(array); } catch(IndexOutOfBoundsException e) { System.out.println("IOBE "); } catch(IOException e) { System.out.println("IOE "); } finally { if (oOs != null){ try { oOs.close(); // fIn.close(); } catch (IOException e){ } } } } public Object[][] getData(){ Object[][] array = new Object [2][3]; Object obj = new Object(); try { fIn = new FileInputStream ("C:\\Air\\HVACData"); oIS = new ObjectInputStream(fIn); while (( obj = oIS.readObject()) != null) { System.out.println("Class is " + obj.getClass()); //[[Ljava.lang.Object; for ( int i = 0; i < array.length; ++i) { for ( int j = 0; j < array[i].length; ++j ) { // How do I obj back into an array? } } } } catch (EOFException evt) { System.out.println("EOF"); //evt.printStackTrace(); } catch (IllegalArgumentException evt) { System.out.println("IAE"); } catch (FileNotFoundException evt) { System.out.println("FNF Read Item File"); } catch (ClassNotFoundException evt) { System.out.println("CNF"); } catch(StreamCorruptedException evt){ System.out.println("SCE"); } catch(SecurityException evt){ System.out.println("SE"); } catch(NullPointerException evt){ System.out.println("NPE"); } catch (InvalidClassException evt) { System.out.println("ICE"); } catch (NotSerializableException evt) { System.out.println("NSE"); } catch (IOException evt) { System.out.println("IOE filename ReadItemFile.java "); //evt.printStackTrace(); } finally { if (fIn != null){ try { fIn.close(); } catch (IOException evt){ } } } return array; } // end getDate() private void createAndShowGUI() { Object rowData[][] = { { "Row1-Column1", "Row1-Column2", "Row1-Column3" }, { "Row2-Column1", "Row2-Column2", "Row2-Column3" } }; Object columnNames[] = { "Column One", "Column Two", "Column Three" }; JFrame frame = new JFrame(); table = new JTable(rowData, columnNames); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JScrollPane scrollPane = new JScrollPane(table); frame.add(scrollPane, BorderLayout.CENTER); frame.setSize(300, 150); frame.setVisible(true); save(); getData(); } public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { TableDemo demo = new TableDemo(); demo.createAndShowGUI(); } }); } }

Thank you.

Why couldnt I cast it to string?

Please bear with me. Even though I got the results I was looking for in this example. I am still a little unclear
on what my output was someting like ... [Ljava.lang.Object;@1e0bc08

What is the a representation of the index of the array?

>> You're making things too complicated if that's what you assumed.

I do have a tendancy to make things more difficult.
I re-wrote the loop and everything is working as exected.

Thank you.
G.

...until now. When I use the array as an argument to a method and then us Object.toString()

I still get [Ljava.lang.Object;@e24e2a.

package tabledemo; import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; public class TableDemo { JTable table; Object [][] array; private void readTableData() { array = new Object [table.getRowCount()] [table.getColumnCount()]; String string ; Object object = new Object(); for ( int i = 0; i < table.getRowCount() ; ++i) { for ( int j = 0; j < table.getColumnCount(); ++j) { array[i][j] = table.getValueAt(i, j); object = table.getValueAt(i,j); string = object.toString(); System.out.println("readTableData string is: " + string); // good here //System.out.println("readTableData array is: " + array[i][j]); } } } protected void copyArray( Object[][] list ) { for ( Object item : list ) { String string = item.toString(); System.out.println("WriteFile string is: " + string); // not so good here } } private void createAndShowGUI() { Object rowData[][] = { { "Row1-Column1", "Row1-Column2", "Row1-Column3" }, { "Row2-Column1", "Row2-Column2", "Row2-Column3" } }; Object columnNames[] = { "Column One", "Column Two", "Column Three" }; JFrame frame = new JFrame(); table = new JTable(rowData, columnNames); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JScrollPane scrollPane = new JScrollPane(table); frame.add(scrollPane, BorderLayout.CENTER); frame.setSize(300, 150); frame.setVisible(true); readTableData(); copyArray(array); } public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { TableDemo demo = new TableDemo(); demo.createAndShowGUI(); } }); } }

Thanks Rob, your explantion solved my problem.

G.