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POWhy do Clipboard Listener use more CPU usage?
 

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  1. POWhy do Clipboard Listener use more CPU usage?
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    <p>I wrote program that listen Clipboard and worked correctly, but i saw that the program use more CPU usage. CPU usage is more 70%. Why? Can i reduce it? or i want Listener that listen windows's copy action. Is there Listener in java for this? This is my code:</p> <pre><code> package yoxlama; import java.awt.*; import java.awt.datatransfer.*; import java.io.IOException; import java.net.MalformedURLException; class ClipBoardListener extends Thread implements ClipboardOwner { Clipboard sysClip = Toolkit.getDefaultToolkit().getSystemClipboard(); static ClipBoardListener b; Interlsoft interlsoft = new Interlsoft(); public void run() { try{ Transferable trans = sysClip.getContents(this); regainOwnership(trans); }catch (Exception e) { try { b.finalize(); } catch (Throwable e1) { // TODO Auto-generated catch block e1.printStackTrace(); } b= new ClipBoardListener(); b.start(); System.out.println("NESE1"); } System.out.println("Listening to board..."); while(true) {} } public void lostOwnership(Clipboard c, Transferable t) { try { Thread.sleep(50); } catch(Exception e) { System.out.println("Exception: " + e); } try{ Transferable contents = sysClip.getContents(this); processContents(contents); regainOwnership(contents); }catch (Exception e) { try { b.finalize(); b= new ClipBoardListener(); b.start(); } catch (Throwable e1) { // TODO Auto-generated catch block e1.printStackTrace(); } System.out.println("nese"); } } void processContents(Transferable t) throws MalformedURLException, IOException { String str = getClipboard(t); if(str!=null){ str= str.replace("\n", "%0D%0A"); str= str.replace("\r", ""); str= str.replace("\t", ""); str= str.replace("/", ""); str= str.replace("-", ""); interlsoft.translate(str); } // System.out.println("Processing: " + getClipboard(t)); } void regainOwnership(Transferable t) { sysClip.setContents(t, this); } public static void main(String[] args) { b = new ClipBoardListener(); b.start(); } public static String getClipboard(Transferable t) { // Transferable t = Toolkit.getDefaultToolkit().getSystemClipboard().getContents(null); try { if (t != null &amp;&amp; t.isDataFlavorSupported(DataFlavor.stringFlavor)) { String text = (String)t.getTransferData(DataFlavor.stringFlavor); return text; } } catch (UnsupportedFlavorException e) { System.out.println("BURDA1"); } catch (IOException e) { System.out.println("BURDA1"); } return null; } } </code></pre>
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    1. USQafqaz Qafqaz
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    2. VO
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    3. VO
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    1. CO`while(true) {}`?
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      1. USHovercraft Full Of Eels
    2. COUnrelated to the question, but still: b.finalize() = no, no, no! Even if it doesn't seem overridden (which it shouldn't it most cases), it's not a method you call explicitely.
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      1. USFrank Pavageau
    3. COReally, +1 for questions with "while(true) {}" ?
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      1. USSiddharth
 

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