how access JtextArea in a JtabbedPane in java?

Question

I want to make a program same as notepad with tab option. I created a tab with JTabbedPane and add TextArea in that. tab created whit user when program run. how I can access to JTextArea in selected tab by user to save data and other options?

Answer 1

• Write a class, extending from something like JPanel . This class will container a JTextArea (presumably within a JScrollPane )
• Provide appropriate getters and setters and other functionality you might want to use (set/getText, load/save, whatever)

When you need to add another tab, create an instance of this class, configure as you need. Generate a unique identifier for it (probably the same as the tab's name) and add it to a Map of some kind, keyed to the identifier.

When you need to, using the identifier, get the instance of "editor pane".

Some other useful methods you might need

• JTabbedPane#getTitleAt(int)
• JTabbedPane#getSelectedIndex
• JTabbedPane#getComponentAt

Answer 2

尝试像这样访问它：

JTextArea TextArea1= (JTextArea)jTabbedPane1.getSelectedComponent();