view headers in JTable?

I can't view header in JTable while adding it into a JFrame..

     String[] col={"Name","ID","Marks"};
     Object[][] data={{"venkat",201,450},{"Ramesh",102,450},{"Rahul",2,430},    {"Thiman",4,434}};
     table=new JTable(data,co开发者_Go百科l);

The above code doesn't set header in JFrame. How to add view header in JTable while adding it into JFrame.....?

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You need to add your table to a scroll pane, or explicitly add the header where you need it

JScrollPane scroller = new JScrollPane(table);

then add the scroll pane to your gui