[serjant]

For my diploma work at university i made java editor,so to each of JMenutItem pass with ActionListener,I attach the code in that case if you use JTextArea
actionPerformed(ActionEvent e) for cut command:
Assuming that

Code:

JTextArea textArea=new JTextArea();

Code:

//cut command 
		if(e.getActionCommand().equals("Cut")){
			
			String selection=textArea.getSelectedText();
			
			if(selection==null){
				return;
			}
			StringSelection clipString=new StringSelection(selection);
			clipboard.setContents(clipString,clipString);
			textArea.replaceSelection("");
}

actionPerformed(ActionEvent e) for copy command:

Code:

//copy command
		if(e.getActionCommand().equals("Copy")){
			
			String selection =textArea.getSelectedText();
			
			if(selection==null){
				return;
			}
			StringSelection clipString=new StringSelection(selection);
			clipboard.setContents(clipString, clipString);
		}

actionPerformed(ActionEvent e) for paste command:

Code:

//paste command
		if(e.getActionCommand().equals("Paste")){
		
			Transferable clip_data=clipboard.getContents(this);
			
			try{
				String clip_string=(String)clip_data.getTransferData(DataFlavor.stringFlavor);
				textArea.replaceSelection(clip_string);
				
			}catch(Exception excpt){
				
			}
		}