java - How to insert data into JTable? -

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i write code showing strings in table.

but doesnt shown , has no effect.

what problrem? 

 public pamnel() {             initcomponents();              string[] columnnames = {"first name",                             "last name",                             "sport",                             "# of years",                             "vegetarian"};        object[][] data = {         {"kathy", "smith",          "snowboarding", new integer(5), new boolean(false)},         {"john", "doe",          "rowing", new integer(3), new boolean(true)},         {"sue", "black",          "knitting", new integer(2), new boolean(false)},         {"jane", "white",          "speed reading", new integer(20), new boolean(true)},         {"joe", "brown",          "pool", new integer(10), new boolean(false)}     };       jtable1 = new jtable(data, columnnames);                         }

edit: add jtable on panel.

in main add panel jframe.

 jframe frame = new jframe();     frame.add(new pamnel());     frame.setvisible(true);     frame.setsize(600, 600);     frame.setdefaultcloseoperation(jframe.exit_on_close);

the table shown data isn't show. row , column of table empty!

you have add jtable parent-component , setvisible().


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