Tecla enter no JtextField

Assuntos Gerais
#1

Olá galera, fiz uma aplicação ak, com varias abas(painel) aba cliente, aba fornecedor, na aba cliente eu cadastro os cliente blz.

ja a aba fornecedor eu quero recuperar o cliente cadastrado sem usar botão, quero digitar o CNPJ e recuperar o dados dos clientes apenas com a tecla enter.

ai valeoo

abrazzz

#2

implemente um keylistener para o field onde vc quer executar a operaçao

#3

Oi,

ou então você poderia implementar o FocusListener no campo textfield utilizando
o método focusLost. Assim que o usuario terminar de digitar o CNPJ e mudar de campo,
seja ela com o mouse ou com a tecla tab do teclado, irá carregar as informações do usuário.

Tchauzin!

#4

Isto é muito mais fácil. Pegue todos os componentes que precisam que o ENTER funcione como TAB, e chame este método sobre eles:

	/**
	 * Este método faz com que o ENTER seja considerado como TAB, em componentes como
	 * um JTextField.
	 * @param comp O componente.
	 */
	public static void considerarEnterComoTab (Component comp) {
		Set<AWTKeyStroke> keystrokes = comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
		Set<AWTKeyStroke> newKeystrokes = new HashSet<AWTKeyStroke> (keystrokes);
		newKeystrokes.add (AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER, 0));
		comp.setFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, newKeystrokes); 
	}

Aqui vai um exemplo bobo.

import java.awt.AWTKeyStroke;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

public class EnterComoTab extends JFrame {

	private static final long serialVersionUID = 1L;

	private JPanel jContentPane = null;

	private JLabel lblTexto1 = null;

	private JLabel lblTexto2 = null;

	private JTextField txtNome = null;

	private JTextField txtEndereco = null;

	private JButton btnOK = null;

	/**
	 * This is the default constructor
	 */
	public EnterComoTab() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(300, 200);
		this.setContentPane(getJContentPane());
		this.setTitle("JFrame");
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			lblTexto2 = new JLabel();
			lblTexto2.setBounds(new Rectangle(15, 60, 59, 14));
			lblTexto2.setText("Endereço");
			lblTexto1 = new JLabel();
			lblTexto1.setBounds(new Rectangle(15, 15, 63, 14));
			lblTexto1.setText("Nome");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(lblTexto1, null);
			jContentPane.add(lblTexto2, null);
			jContentPane.add(getTxtNome(), null);
			jContentPane.add(getTxtEndereco(), null);
			jContentPane.add(getBtnOK(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes txtNome	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getTxtNome() {
		if (txtNome == null) {
			txtNome = new JTextField();
			txtNome.setBounds(new Rectangle(90, 15, 181, 31));
			considerarEnterComoTab(txtNome); // ####
		}
		return txtNome;
	}

	/**
	 * This method initializes txtEndereco	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getTxtEndereco() {
		if (txtEndereco == null) {
			txtEndereco = new JTextField();
			txtEndereco.setBounds(new Rectangle(90, 60, 181, 31));
			considerarEnterComoTab(txtEndereco); // ####
		}
		return txtEndereco;
	}

	/**
	 * This method initializes btnOK	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getBtnOK() {
		if (btnOK == null) {
			btnOK = new JButton();
			btnOK.setBounds(new Rectangle(90, 120, 106, 31));
			btnOK.setText("OK");
			btnOK.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					EnterComoTab.this.dispose();
				}
			});
		}
		return btnOK;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				EnterComoTab thisClass = new EnterComoTab();
				thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
				thisClass.setVisible(true);
			}
		});
	}
	
	/**
	 * Este método faz com que o ENTER seja considerado como TAB, em componentes como
	 * um JTextField.
	 * @param comp O componente.
	 */
	public static void considerarEnterComoTab (Component comp) {
		Set<AWTKeyStroke> keystrokes = comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
		Set<AWTKeyStroke> newKeystrokes = new HashSet<AWTKeyStroke> (keystrokes);
		newKeystrokes.add (AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER, 0));
		comp.setFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, newKeystrokes); 
	}
	
}
#5

Atualizei o exemplo para as seguintes coisas que são pedidas:

  • Se teclar ENTER sobre o botão OK, acionar o botão OK.
  • Se teclar ESC, fechar a janela.
  • Passar de um campo para outro com as setas para cima e para baixo.
import java.awt.AWTKeyStroke;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;

public class EnterComoTab extends JFrame {

	private static final long serialVersionUID = 1L;

	private JPanel jContentPane = null;

	private JLabel lblTexto1 = null;

	private JLabel lblTexto2 = null;

	private JTextField txtNome = null;

	private JTextField txtEndereco = null;

	private JButton btnOK = null;

	/**
	 * This is the default constructor
	 */
	public EnterComoTab() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(300, 200);
		this.setContentPane(getJContentPane());
		this.getRootPane().setDefaultButton(btnOK); // Se teclarmos OK neste
													// botão...
		// Se teclarmos ESC nesta janela, ela irá se fechar:
		this.getRootPane().registerKeyboardAction(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				EnterComoTab.this.dispose();
			}
		}, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),
				JComponent.WHEN_IN_FOCUSED_WINDOW);
		this.setTitle("JFrame");
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			lblTexto2 = new JLabel();
			lblTexto2.setBounds(new Rectangle(15, 60, 59, 14));
			lblTexto2.setText("Endereço");
			lblTexto1 = new JLabel();
			lblTexto1.setBounds(new Rectangle(15, 15, 63, 14));
			lblTexto1.setText("Nome");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(lblTexto1, null);
			jContentPane.add(lblTexto2, null);
			jContentPane.add(getTxtNome(), null);
			jContentPane.add(getTxtEndereco(), null);
			jContentPane.add(getBtnOK(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes txtNome
	 * 
	 * @return javax.swing.JTextField
	 */
	private JTextField getTxtNome() {
		if (txtNome == null) {
			txtNome = new JTextField();
			txtNome.setBounds(new Rectangle(90, 15, 181, 31));
			considerarEnterComoTab(txtNome); // ####
		}
		return txtNome;
	}

	/**
	 * This method initializes txtEndereco
	 * 
	 * @return javax.swing.JTextField
	 */
	private JTextField getTxtEndereco() {
		if (txtEndereco == null) {
			txtEndereco = new JTextField();
			txtEndereco.setBounds(new Rectangle(90, 60, 181, 31));
			considerarEnterComoTab(txtEndereco); // ####
		}
		return txtEndereco;
	}

	/**
	 * This method initializes btnOK
	 * 
	 * @return javax.swing.JButton
	 */
	private JButton getBtnOK() {
		if (btnOK == null) {
			btnOK = new JButton();
			btnOK.setBounds(new Rectangle(90, 120, 106, 31));
			btnOK.setText("OK");
			considerarSetaComoTab(btnOK);
			btnOK.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					EnterComoTab.this.dispose();
				}
			});
		}
		return btnOK;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				EnterComoTab thisClass = new EnterComoTab();
				thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
				thisClass.setVisible(true);
			}
		});
	}

	/**
	 * Este método faz com que o ENTER seja considerado como TAB, em componentes
	 * como um JTextField. Além disso, permite a navegação com as setas para
	 * cima e para baixo.
	 * 
	 * @param comp
	 *            O componente.
	 */
	public static void considerarEnterComoTab(Component comp) {
		Set<AWTKeyStroke> newKeystrokes;
		newKeystrokes = new HashSet<AWTKeyStroke>(
				comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER, 0));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_DOWN, 0));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_DOWN, 0));
		comp.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
				newKeystrokes);
		newKeystrokes = new HashSet<AWTKeyStroke>(
				comp.getFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER,
				InputEvent.SHIFT_DOWN_MASK));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_UP, 0));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_UP, 0));
		comp.setFocusTraversalKeys(
				KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newKeystrokes);
	}

	/**
	 * Este método faz com que as setas sejam consideradas como TAB, e deve ser
	 * usado em um botão qualquer.
	 * 
	 * @param comp
	 *            O componente.
	 */
	public static void considerarSetaComoTab(JButton comp) {
		Set<AWTKeyStroke> newKeystrokes;
		newKeystrokes = new HashSet<AWTKeyStroke>(
				comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_DOWN, 0));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_DOWN, 0));
		comp.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
				newKeystrokes);
		newKeystrokes = new HashSet<AWTKeyStroke>(
				comp.getFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_UP, 0));
		newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_UP, 0));
		comp.setFocusTraversalKeys(
				KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newKeystrokes);
	}
}
1 curtida
#6

[quote=thingol]Atualizei o exemplo para as seguintes coisas que são pedidas:

  • Se teclar ENTER sobre o botão OK, acionar o botão OK.
  • Se teclar ESC, fechar a janela.
  • Passar de um campo para outro com as setas para cima e para baixo.

[code]
import java.awt.AWTKeyStroke;
import java.awt.Component;
import java.awt.KeyboardFocusManager;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;

public class EnterComoTab extends JFrame {

private static final long serialVersionUID = 1L;

private JPanel jContentPane = null;

private JLabel lblTexto1 = null;

private JLabel lblTexto2 = null;

private JTextField txtNome = null;

private JTextField txtEndereco = null;

private JButton btnOK = null;

/**
 * This is the default constructor
 */
public EnterComoTab() {
	super();
	initialize();
}

/**
 * This method initializes this
 * 
 * @return void
 */
private void initialize() {
	this.setSize(300, 200);
	this.setContentPane(getJContentPane());
	this.getRootPane().setDefaultButton(btnOK); // Se teclarmos OK neste
												// botão...
	// Se teclarmos ESC nesta janela, ela irá se fechar:
	this.getRootPane().registerKeyboardAction(new ActionListener() {
		public void actionPerformed(ActionEvent e) {
			EnterComoTab.this.dispose();
		}
	}, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0),
			JComponent.WHEN_IN_FOCUSED_WINDOW);
	this.setTitle("JFrame");
}

/**
 * This method initializes jContentPane
 * 
 * @return javax.swing.JPanel
 */
private JPanel getJContentPane() {
	if (jContentPane == null) {
		lblTexto2 = new JLabel();
		lblTexto2.setBounds(new Rectangle(15, 60, 59, 14));
		lblTexto2.setText("Endereço");
		lblTexto1 = new JLabel();
		lblTexto1.setBounds(new Rectangle(15, 15, 63, 14));
		lblTexto1.setText("Nome");
		jContentPane = new JPanel();
		jContentPane.setLayout(null);
		jContentPane.add(lblTexto1, null);
		jContentPane.add(lblTexto2, null);
		jContentPane.add(getTxtNome(), null);
		jContentPane.add(getTxtEndereco(), null);
		jContentPane.add(getBtnOK(), null);
	}
	return jContentPane;
}

/**
 * This method initializes txtNome
 * 
 * @return javax.swing.JTextField
 */
private JTextField getTxtNome() {
	if (txtNome == null) {
		txtNome = new JTextField();
		txtNome.setBounds(new Rectangle(90, 15, 181, 31));
		considerarEnterComoTab(txtNome); // ####
	}
	return txtNome;
}

/**
 * This method initializes txtEndereco
 * 
 * @return javax.swing.JTextField
 */
private JTextField getTxtEndereco() {
	if (txtEndereco == null) {
		txtEndereco = new JTextField();
		txtEndereco.setBounds(new Rectangle(90, 60, 181, 31));
		considerarEnterComoTab(txtEndereco); // ####
	}
	return txtEndereco;
}

/**
 * This method initializes btnOK
 * 
 * @return javax.swing.JButton
 */
private JButton getBtnOK() {
	if (btnOK == null) {
		btnOK = new JButton();
		btnOK.setBounds(new Rectangle(90, 120, 106, 31));
		btnOK.setText("OK");
		considerarSetaComoTab(btnOK);
		btnOK.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(java.awt.event.ActionEvent e) {
				EnterComoTab.this.dispose();
			}
		});
	}
	return btnOK;
}

/**
 * @param args
 */
public static void main(String[] args) {
	// TODO Auto-generated method stub
	SwingUtilities.invokeLater(new Runnable() {
		public void run() {
			EnterComoTab thisClass = new EnterComoTab();
			thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			thisClass.setVisible(true);
		}
	});
}

/**
 * Este método faz com que o ENTER seja considerado como TAB, em componentes
 * como um JTextField. Além disso, permite a navegação com as setas para
 * cima e para baixo.
 * 
 * @param comp
 *            O componente.
 */
public static void considerarEnterComoTab(Component comp) {
	Set<AWTKeyStroke> newKeystrokes;
	newKeystrokes = new HashSet<AWTKeyStroke>(
			comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER, 0));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_DOWN, 0));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_DOWN, 0));
	comp.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
			newKeystrokes);
	newKeystrokes = new HashSet<AWTKeyStroke>(
			comp.getFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_ENTER,
			InputEvent.SHIFT_DOWN_MASK));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_UP, 0));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_UP, 0));
	comp.setFocusTraversalKeys(
			KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newKeystrokes);
}

/**
 * Este método faz com que as setas sejam consideradas como TAB, e deve ser
 * usado em um botão qualquer.
 * 
 * @param comp
 *            O componente.
 */
public static void considerarSetaComoTab(JButton comp) {
	Set<AWTKeyStroke> newKeystrokes;
	newKeystrokes = new HashSet<AWTKeyStroke>(
			comp.getFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_DOWN, 0));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_DOWN, 0));
	comp.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
			newKeystrokes);
	newKeystrokes = new HashSet<AWTKeyStroke>(
			comp.getFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_UP, 0));
	newKeystrokes.add(AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_KP_UP, 0));
	comp.setFocusTraversalKeys(
			KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, newKeystrokes);
}

}
[/code][/quote]

thingol, por favor me salve, ainda coloco o considerarEnterComoTab(txtNome), o meu projeto ja ta pronto, aonde adiciono o codigo e no botão como fazer e ele passaé o codigo.

#7