Columns in JTable, Help!

Hello There,
I have two question about the JTable in Java:
1. How can i set a column width? I want to have one column widder than the other and not editable at runtime.
2. How can i have multiple lines (block of data/small paragraph) in one cell? because whenver i write a 3 new lines of data in a cell the JTable converts it cont. line.
Please Help!!

Here there is a JTable where 3 colums are being resized
TableColumn column1 = null;
               for (int i = 0; i < 3; i++) {
                   column1 = table1.getColumnModel().getColumn(i);
                   if (i == 0) {
                       column1.setPreferredWidth(20);
                   } else {
                        if (i == 1){
                             column1.setPreferredWidth(160);
                        else
                             column1.setPreferredWidth(80);
               }

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Hi All,
I have a JTable that add rows when the user clicks on the button. In this way there can be any no. of rows in my table. My table contains five columns. When a new row is added , it is added with new data each time. Also the data of the rows keep on changing time to time.
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Why do you have 3 postings on this topic all made within minutes of each other? (see [url http://forum.java.sun.com/thread.jspa?threadID=574547&tstart=0]here and [url http://forum.java.sun.com/thread.jspa?threadID=574543&tstart=0]here).
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where change is the value of the third column.How do you know "change" is the value of the third column? Did you use a System.out.println(...) to verify this.
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