// Fig. 16.11: RunnableOutput.java
// Class RunnableOutput updates JTextArea with output
import javax.swing.*;

public class RunnableOutput implements Runnable {
   private JTextArea outputArea;
   private String messageToAppend;
    
   // initialize outputArea and message
   public RunnableOutput( JTextArea output, String message )
   {
      outputArea = output;
      messageToAppend = message;
   }
    
   // method called by SwingUtilities.invokeLater to update outputArea
   public void run()
   {
      outputArea.append( messageToAppend );
   }
    
} // end class RunnableOutput

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