para descargar musica 1

2009-01-18T05:31:00.000-08:00

bueno esta es una pagina que encontre buscando musica espero que les sirva http://peruhits.blogspot.com/2008_08_01_archive.html

JQIPTextField

2009-01-09T10:10:00.000-08:00

hola todos , bueno este codigo lo baje de la pagina de koders es un componente para validar direcciones IP y lo modifique un pocquito a mi gusto:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.text.*;
public class JQIPTextField extends JPanel{
private JTextField part1;
private JTextField part2;
private JTextField part3;
private JTextField part4;
private TextFieldFocusHandler textFieldFocusHandler;
public JQIPTextField() {
super( new GridBagLayout( ) );
setBorder( (Border)UIManager.get( "TextField.border" ) );
textFieldFocusHandler = new TextFieldFocusHandler();
GridBagConstraints constraints = new GridBagConstraints();
constraints.gridx = 0;
constraints.gridy = 0;
constraints.weightx = 1;
constraints.weighty = 1;
constraints.fill = GridBagConstraints.BOTH;
constraints.insets = new Insets( 0, 0, 0, 0 );
constraints.anchor = GridBagConstraints.WEST; part1 = createTextF( null ); add( part1, constraints );
constraints.gridx = 1; constraints.gridy = 0; add( buildLabel(), constraints );
constraints.gridx = 2; constraints.gridy = 0; part2 = createTextF( part1 ); add( part2, constraints );
constraints.gridx = 3; constraints.gridy = 0; add( buildLabel(), constraints );
constraints.gridx = 4; constraints.gridy = 0; part3 = createTextF( part2 ); add( part3, constraints );
constraints.gridx = 5; constraints.gridy = 0; add( buildLabel(), constraints );
constraints.gridx = 6; constraints.gridy = 0; constraints.insets = new Insets( 0, 0, 0, 0 ); part4 = createTextF( part3 ); add( part4, constraints );
setBackground( part1.getBackground() ); }
public void setEnabled( boolean state ) { super.setEnabled( state ); part1.setEnabled( state ); part2.setEnabled( state ); part3.setEnabled( state ); part4.setEnabled( state ); }
public boolean isInputValid() { if ( !isFieldValid( part1 ) ) { //invalidTF = part1; return false; } if ( !isFieldValid( part2 ) ) { //invalidTF = part2; return false; } if ( !isFieldValid( part3 ) ) { //invalidTF = part3; return false; } if ( !isFieldValid( part4 ) ) { //invalidTF = part4; return false; } return true; } public boolean isFieldEmpty() { if ( part1.getText().trim().length() == 0 && part2.getText().trim().length() == 0 && part3.getText().trim().length() == 0 && part4.getText().trim().length() == 0 ) { return true; } return false; }
private boolean isFieldValid( JTextField textField ) { String str = textField.getText(); if ( str.length() == 0 ) { return false; } try { int result = Integer.parseInt( str ); if ( result > 255 ) { textField.setText( "" ); return false; } return true; } catch ( NumberFormatException exp ) { textField.setText( "" ); return false; } }
public void setIPString( String ipString ) { Document doc = part1.getDocument(); try { doc.remove( 0, doc.getLength() ); doc.insertString( 0, ipString, new SimpleAttributeSet() ); } catch ( BadLocationException exp ) { } }
public String getIPString() { byte[] ip = getIP(); return ip2string( ip ); }
public byte[] getIP() { String p1 = part1.getText(); if ( p1.length() == 0 ) { p1 = "0"; } String p2 = part2.getText(); if ( p2.length() == 0 ) { p2 = "0"; } String p3 = part3.getText(); if ( p3.length() == 0 ) { p3 = "0"; } String p4 = part4.getText(); if ( p4.length() == 0 ) { p4 = "0"; }
try { byte[] ip = new byte[4]; ip[0] = (byte)Integer.parseInt( p1 ); ip[1] = (byte)Integer.parseInt( p2 ); ip[2] = (byte)Integer.parseInt( p3 ); ip[3] = (byte)Integer.parseInt( p4 ); return ip; } catch ( NumberFormatException exp ) { return null; } }
private JTextField createTextF( JTextField prevTextField ) { IPDocument doc = new IPDocument(); JTextField field = new JTextField( doc, null, 3 ); field.addFocusListener( textFieldFocusHandler ); field.setBorder( null ); field.setHorizontalAlignment( JTextField.CENTER ); field.addKeyListener(new tecla()); if ( prevTextField != null ) { ((IPDocument)prevTextField.getDocument()).setNextTextField( field ); } return field; }
private JLabel buildLabel() { JLabel label = new JLabel( "." ); label.setBackground( part1.getBackground() ); label.setForeground( part1.getForeground() ); return label; }
private void addToNextTextField( String nextTextFieldStr, JTextField nextTF ) { if ( nextTF == null ) {// drop string return; } nextTF.requestFocus(); Document doc = nextTF.getDocument(); try { doc.remove( 0, doc.getLength() ); doc.insertString( 0, nextTextFieldStr, new SimpleAttributeSet() ); } catch ( BadLocationException exp ) { } }
private void selectNextTextField() { JTextField nextTF = getNextFocusTextField(); if ( nextTF == null ) {// drop string return; } nextTF.requestFocus(); nextTF.selectAll(); }
private JTextField getNextFocusTextField() { if ( part1.hasFocus() ) { return part2; } else if ( part2.hasFocus() ) { return part3; } else if ( part3.hasFocus() ) { return part4; } return null; } public JTextField getPrevFocusTextField() { if ( part4.hasFocus() ) { return part3; } else if ( part3.hasFocus() ) { return part2; } else if ( part2.hasFocus() ) { return part1; } return null; } public class TextFieldFocusHandler extends FocusAdapter { public void focusLost( FocusEvent e ) { if ( e.isTemporary() ) { return; } JTextField textField = (JTextField)e.getSource(); String text = textField.getText(); if ( text.length() == 0 ) { return; } try { int result = Integer.parseInt( text ); if ( result > 255 ) { textField.setText( "255" ); } } catch ( NumberFormatException exp ) { textField.setText( "0" ); } } public void focusGained(FocusEvent e) { //((JTextField)e.getComponent()).setse JTextField txt=(JTextField)e.getComponent(); txt.setSelectionStart(0); txt.setSelectionEnd(txt.getText().length()); } } class tecla extends KeyAdapter{ public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_RIGHT: { JTextField txt=(JTextField)e.getComponent(); String s=txt.getText(); int index=txt.getCaretPosition(); if(s.length()==index) txt.transferFocus(); } break; case KeyEvent.VK_ENTER: { e.getComponent().transferFocus(); } break; case KeyEvent.VK_LEFT: { JTextField txt=(JTextField)e.getComponent(); int index=txt.getCaretPosition(); if(index==0){ JComponent o=getPrevFocusTextField(); if(o!=null){ o.requestFocus(); } } break; case KeyEvent.VK_HOME: { JComponent o=getPrevFocusTextField(); if(o!=null){ o.requestFocus(); } } break; }}

} } class IPDocument extends PlainDocument { protected JTextField nextTextField; IPDocument( ) { super(); }
public void setNextTextField( JTextField textField ) { nextTextField = textField; }
public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { if (str == null) { return; }
// add max 3 chars.... int freeSpace = 3 - getLength(); if ( freeSpace == 0 ) { return; }
char[] addCharArr = new char[ freeSpace ]; int addCharCount = 0; int strLength = str.length(); int i = 0; boolean continueToNextField = false; for ( i = 0; i < c =" str.charAt(" addcharcount ="="" c ="=""> 0 ) { continueToNextField = true; break; } }
super.insertString(offset, new String( addCharArr, 0, addCharCount ), a);
if ( continueToNextField offset + addCharCount == 3 ) { if ( i + 1 < strLength ) { addToNextTextField( str.substring( i + 1 ), nextTextField ); } else if ( getLength() == 3 ) { selectNextTextField(); } } } } public String ip2string(byte[] ip) { if ( ip == null ) { throw new NullPointerException("Ip is null!"); } assert ip.length == 4; return (ip[0] & 0xff) + "." + (ip[1] & 0xff) + "." + (ip[2] & 0xff) + "." + (ip[3] & 0xff); } public static void main(String[] args) { JFrame f=new JFrame(); f.pack(); f.add(new JQIPTextField()); f.setVisible(true); }
}

Presentacion

2009-01-07T10:07:00.000-08:00

bueno gente este es mi blog en el voy a poner tutoriales de java y enlaces a sitios interesantes chao...

Mi sitio en la Web

para descargar musica 1

JQIPTextField

Presentacion