Programmatically select a row in JTable

Question

When the application is started, none of the rows is selected. But I would like to show that the first row is already selected.

How to do this? Do I need to set the color of a row in JTable?

Update: I tried table.setRowSelectionInterval(0,0). I know it should work, but there is an error message:

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Row index out of range     at javax.swing.JTable.boundRow(Unknown Source)     at javax.swing.JTable.setRowSelectionInterval(Unknown Source)     at cpn_gui.OptPanel.createForm(OptPanel.java:124)     at cpn_gui.OptPanel.<init>(OptPanel.java:50)     at cpn_gui.Login$1.actionPerformed(Login.java:62)     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)     at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)     at java.awt.Component.processMouseEvent(Unknown Source)     at javax.swing.JComponent.processMouseEvent(Unknown Source)     at java.awt.Component.processEvent(Unknown Source)     at java.awt.Container.processEvent(Unknown Source)     at java.awt.Component.dispatchEventImpl(Unknown Source)     at java.awt.Container.dispatchEventImpl(Unknown Source)     at java.awt.Component.dispatchEvent(Unknown Source)     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)     at java.awt.Container.dispatchEventImpl(Unknown Source)     at java.awt.Window.dispatchEventImpl(Unknown Source)     at java.awt.Component.dispatchEvent(Unknown Source)     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)     at java.awt.EventQueue.access$000(Unknown Source)     at java.awt.EventQueue$1.run(Unknown Source)     at java.awt.EventQueue$1.run(Unknown Source)     at java.security.AccessController.doPrivileged(Native Method)     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)     at java.awt.EventQueue$2.run(Unknown Source)     at java.awt.EventQueue$2.run(Unknown Source)     at java.security.AccessController.doPrivileged(Native Method)     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)     at java.awt.EventQueue.dispatchEvent(Unknown Source)     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)     at java.awt.EventDispatchThread.run(Unknown Source) 

Answer 1

You can do it calling setRowSelectionInterval :

table.setRowSelectionInterval(0, 0); 

to select the first row.

Answer 2

It is an old post, but I came across this recently

Selecting a specific interval

As @aleroot already mentioned, by using

table.setRowSelectionInterval(index0, index1); 

You can specify an interval, which should be selected.

Adding an interval to the existing selection

You can also keep the current selection, and simply add additional rows by using this here

table.getSelectionModel().addSelectionInterval(index0, index1); 

This line of code additionally selects the specified interval. It doesn't matter if that interval already is selected, of parts of it are selected.