view release on metacpan or  search on metacpan

examples/corpus/EventThreadDemo2.java  view on Meta::CPAN

        frame.addWindowListener( new WindowAdapter() {        
                public void windowClosing( WindowEvent e ) {
                    System.exit( 0 );
                }
        });
        JTextArea textArea = new JTextArea();
        textArea.setLineWrap(true);
        textArea.setWrapStyleWord(true);
        textArea.getDocument().addDocumentListener(
                                new MyDocumentListener());
        MyTools.printThreadInfo(                                  //(I)
                     "Just after registering document listener:" );
        JScrollPane areaScrollPane = new JScrollPane(textArea);

        MyTools.printThreadInfo(                                  //(J)
                     "Just after creating the scroll pane:" );

        areaScrollPane.setVerticalScrollBarPolicy(
                        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        areaScrollPane.setPreferredSize(new Dimension(250, 250));
        areaScrollPane.setBorder(
            BorderFactory.createCompoundBorder(
                BorderFactory.createCompoundBorder(
                    BorderFactory.createTitledBorder("Plain Text"),
                    BorderFactory.createEmptyBorder(5,5,5,5)),
                areaScrollPane.getBorder()));
        frame.getContentPane().add( 
                       areaScrollPane, BorderLayout.CENTER );
        MyTools.printThreadInfo( "Just before calling pack:" );
        frame.pack();
        frame.setLocation( 300, 300 );
        frame.setVisible( true );
        MyTools.printThreadInfo("Just after calling setVisible:");//(K)     
    }
}

///////////////////////////  class MyTools  ///////////////////////////
class MyTools {                                                   //(L)
    public static void printThreadInfo( String s ) {              //(M)
        System.out.println( s );
//        Thread.currentThread().getThreadGroup().list();
//        System.out.println( 
//          "Number of threads in the current thread group: "
//          + Thread.currentThread().getThreadGroup().activeCount() );
        System.out.println( "The current thread is: " 
                          + Thread.currentThread() );
    }

    public static void keepBusy( int howLong ) {                  //(N)
        long curr = System.currentTimeMillis();
        while ( System.currentTimeMillis() < curr + howLong )
            ;
    }
}

//////////////////////  class MyDocumentListener  /////////////////////
class MyDocumentListener implements DocumentListener {
        public void insertUpdate( final DocumentEvent e ) {
            String str = null;
            Document doc = e.getDocument();
            int lengthText = doc.getLength();
            try {
                str = doc.getText( lengthText - 1, 1 );
            } catch( BadLocationException badloc ) { 
                        badloc.printStackTrace(); 
            }
            MyTools.printThreadInfo("From iniside the listener:");//(O)    
            MyTools.keepBusy( 500 );
            System.out.print( str );
        }
        public void removeUpdate(DocumentEvent e) { }
        public void changedUpdate(DocumentEvent e) { }
}