focuslistener

问题 I would like to change the behavior of a JSpinner so that when you click on the text, it selects it. This makes it easier to replace the field with the value that you want. Unfortunately, I can't get the behavior to work and instead, it just inserts the cursor in the text without selecting what is already there. I have tried adding a focus Listener to both the JSpinner itself and the text area itself, via ((DefaultEditor) this.getEditor()).getTextField() , yet neither of these seem to have

问题 I have a JCombobox in my code. I have added the FocusLost event . But it didn't fired anyway. I have tried lots of time but didn't find solution. jcbItemType.addFocusListener(new java.awt.event.FocusAdapter() { public void focusLost(java.awt.event.FocusEvent evt) { jcbItemTypeFocusLost(evt); } }); private void jcbItemTypeFocusLost(java.awt.event.FocusEvent evt) { // TODO add your handling code here: System.out.println("name=" + ((Component) evt.getSource()).getName()); System.out.println(