CODEWITHSUNDEEP
javaswingfocusjtextfield
sjohnfernandas
sjohnfernandas

Reputation: 15

Focus Gained and Focus Lost event

I have 4 JTextfields in my java swing form. The problem is I need to move the Focus from one JTextField to other through java code not by using tab key.

If the Focus gained by JTextField2 means the content in the JTextField2 need to be selected. I don't know how to do this plz put your proper code associate with this issue

Upvotes: 1

Views: 7753

Answers (2)

mKorbel
mKorbel

Reputation: 109815

that could be little bit complicated

you have to wrap and delay your Action or ActionListener into invokeLater(), and put inside (most safiest way is to set there follows code lines)

  • JTextField2.setText(JTextField2.getText);

and

  • JTextField2.selectAll();

edit to @Andrew Thompson

private FocusListener fcsListener = new FocusListener() {

        @Override
        public void focusGained(FocusEvent e) {
            dumpInfo(e);
        }

        @Override
        public void focusLost(FocusEvent e) {
            //dumpInfo(e);
        }

        private void dumpInfo(FocusEvent e) {
            System.out.println("Source  : " + name(e.getComponent()));
            System.out.println("Opposite : " + name(e.getOppositeComponent()));
            System.out.println("Temporary: " + e.isTemporary());
            Component c = e.getComponent();//works for editable JComboBox too
            if (c instanceof JFormattedTextField) {
                ((JFormattedTextField) c).selectAll();
            } else if (c instanceof JTextField) {
                ((JTextField) c).selectAll();
            }//both methods not correct required setText(getText()) inside invokeLater
        }

        private String name(Component c) {
            return (c == null) ? null : c.getName();
        }
    };

Upvotes: 1

Jonas
Jonas

Reputation: 128807

You can call requestFocusInWindow() for the textfield you want focus.

Upvotes: 1

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