UTF-8 support issue to Java Swing?
Solution 1
This breaks if the the platform default encoding is not utf-8
. tf.getText().getBytes()
gives you the bytes in the platform default encoding. new String(tf.getText().getBytes(), "UTF-8")
will create a corrupt string if the actual encoding of the bytes is not utf-8
.
try
public void actionPerformed(ActionEvent e){
area.setText(tf.getText());
}
Solution 2
OK, so if you are still not convinced of Phillipe's answer, here is a fully working code which demonstrates the good answer. I tried it with accented characters and it works just fine. If it breaks, please indicate how.
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
class AEvent implements ActionListener {
private JTextField tf;
private JTextArea area;
private JFrame frame;
protected void initUI() {
frame = new JFrame();
frame.setLayout(new GridBagLayout());
area = new JTextArea(30, 80);
area.setEditable(false);
area.setFocusable(false);
tf = new JTextField();
JButton b = new JButton("click me");
b.addActionListener(this);
JScrollPane scrollPane = new JScrollPane(area);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(5, 5, 5, 5);
gbc.gridwidth = GridBagConstraints.REMAINDER;
frame.add(scrollPane, gbc);
gbc = new GridBagConstraints();
gbc.weightx = 1.0;
gbc.insets = new Insets(5, 5, 5, 5);
gbc.fill = GridBagConstraints.HORIZONTAL;
frame.add(tf, gbc);
gbc = new GridBagConstraints();
gbc.insets = new Insets(5, 5, 5, 5);
frame.add(b, gbc);
frame.getRootPane().setDefaultButton(b);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent we) {
System.exit(0);
}
});
frame.pack();
frame.setVisible(true);
tf.requestFocusInWindow();
}
@Override
public void actionPerformed(ActionEvent e) {
area.append(tf.getText() + "\n");
tf.setText("");
}
public static void main(String args[]) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new AEvent().initUI();
}
});
}
}
Human Being
Always willing to learn the new things to enhance my knowledge .
Updated on June 04, 2022Comments
-
Human Being over 1 year
Possible Duplicate:
how to implement UTF-8 format in Swing application?In Swing application I have the send button, one text area and a text field.
If I press the send button, I need to send the text from text field to text area
It's working fine in English But not in the local language...
package package1; import java.awt.*; import java.awt.event.*; import java.io.UnsupportedEncodingException; import javax.swing.BorderFactory; import javax.swing.JFrame; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.border.Border; class AEvent extends JFrame implements ActionListener{ private static final long serialVersionUID = 1L; JTextField tf; JTextArea area ; Border border; AEvent(){ area = new JTextArea(200,200); area.setBounds(60,200,300,200); border = BorderFactory.createLineBorder(Color.BLACK); area.setBorder(border); tf=new JTextField(); tf.setBounds(60,70,150,20); Button b=new Button("click me"); b.setBounds(100,120,80,30); b.addActionListener(this); add(b); add(tf); add(area); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent we){ System.exit(0); } }); setSize(600,600); setLayout(null); setVisible(true); } public void actionPerformed(ActionEvent e){ String s = null; try { s = new String(tf.getText().getBytes(), "UTF-8"); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } area.setText(s); } public static void main(String args[]){ new AEvent(); } }
Please give some Idea or some code that will help me to solve this..
-
Human Being almost 11 yearsI used area.setText(tf.getText()); . bue doesn't work..
-
Human Being almost 11 yearsI used area.setText(tf.getText()); . but doesn't work..It shows lot of square boxes in text box and ???????? in textarea.
-
Philippe Marschall almost 11 yearsIf you look at the result of
tf.getText()
in the debugger, does the string look ok you do you just get????????
? -
Rafael Odon over 5 yearsThis is more a comment ;) [2]