Java Simple implementation copy paste cut feature code sharing _java

Nonsense not to say, directly on the code, the small friends carefully read the note.

Copy Code code as follows:

/* Simple copy-cut-paste feature
Operation:
Copy test: Input text Select text, click Copy, then place the cursor on the right textarea, click Paste
Cut Test: Enter text select text, then place cursor on right textarea, click Cut
*/
Import javax.swing.*;
Import java.awt.*;
Import java.awt.datatransfer.*;
Import java.awt.event.*;
public class Demo implements ActionListener
{
Private JFrame JF;
Private JPanel P1, p2, p3; Upper and lower
Private JLabel title;
Private JTextArea edit,showmsg;
Private JButton copy,paste,cut;
Clipboard clipboard;//Gets the system Clipboard.

Public Demo ()
{
This.init ();
}
Interface initialization
public void Init ()
{
JF = new JFrame ("Copy and paste");
P1 = new JPanel (); Store title
P2 = new JPanel (); Store JTextArea showmsg
P3 = new JPanel (); Store button
title = new JLabel ("Copy and Paste cut demo");
Edit = new JTextArea ("Please enter Content", 15,25);
Edit.setlinewrap (TRUE);
ShowMsg = new JTextArea (15,25);
Showmsg.setlinewrap (TRUE);
Showmsg.setenabled (FALSE);
copy = new JButton ("copy");
Paste = new JButton ("paste");
Cut = new JButton ("shear");
Clipboard = Jf.gettoolkit (). Getsystemclipboard ();

P1.setlayout (New FlowLayout ());
P1.setsize (599,30);
P1.add (title);

P2.setlayout (New FlowLayout ());
P2.setbackground (Color.gray);
P2.add (edit);
P2.add (SHOWMSG);

P3.setlayout (New FlowLayout ());
P3.add (copy);
P3.add (paste);
P3.add (cut);

Add Event Listener mechanism
Copy.addactionlistener (this);
Paste.addactionlistener (this);
Cut.addactionlistener (this);

THIS.COPYSTR (copy);
Jf.add (P1, Borderlayout.north);
Jf.add (P2, borderlayout.center);
Jf.add (P3, Borderlayout.south);
Jf.setlocation (400,200);
Jf.setsize (600,450);
Jf.setresizable (FALSE);
Jf.setvisible (TRUE);
}

Event handling
public void actionperformed (ActionEvent e)
{
if (E.getsource () = copy)
{
String Temptext = Edit.getselectedtext (); Drag the mouse to select text
Creates a transferable that can transmit a specified String.
StringSelection EditText =
New StringSelection (Temptext);
/**
Sets the current contents of the Clipboard to the specified transferable object.
and registers the specified clipboard owner as the owner of the new content.
*/
Clipboard.setcontents (Edittext,null);
}else if (e.getsource () = cut)
{
String Temptext = Edit.getselectedtext ();
StringSelection EditText =
New StringSelection (Temptext);
Clipboard.setcontents (Edittext,null);
int start= Edit.getselectionstart ();
int end = Edit.getselectionend ();
Showmsg.replacerange ("", start,end); Deletes the selected text from the TEXT1.
}else if (e.getsource () = = paste)
{
Transferable contents = clipboard.getcontents (this);
DataFlavor flavor= Dataflavor.stringflavor;
if (contents.isdataflavorsupported (flavor))
{
Try
{
String str;
str = (String) contents.gettransferdata (flavor);
Showmsg.append (str);
}catch (Exception ex)
{
Ex.printstacktrace ();
}
}
}
}

public static void Main (string[] args)
{
New Demo ();
}
}

Code is very simple, easy to use, small partners have better ideas, please be sure to tell me.