Reading unicode from swing component and displaying it in swing component fails

I am trying to display a unicode string in a table as specified in the following program.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author dell
 */
public class UnicodeExample extends javax.swing.JFrame {

    /** Creates new form UnicodeExample */
    public UnicodeExample() {
        initComponents();
        setTitle("Unicode Example");
        setSize(400, 400);
        setLocationRelativeTo(null);
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initCom开发者_开发百科ponents() {

        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jLabel2 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(null);

        jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
        jLabel1.setText("Enter :");
        getContentPane().add(jLabel1);
        jLabel1.setBounds(24, 50, 70, 20);

        jTextField1.setText("\\u00a5");
        getContentPane().add(jTextField1);
        jTextField1.setBounds(110, 50, 220, 20);

        jButton1.setText("Display Entered UniCode");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton1);
        jButton1.setBounds(120, 110, 160, 23);
        getContentPane().add(jLabel2);
        jLabel2.setBounds(120, 170, 150, 40);

        pack();
    }// </editor-fold>

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here
        String uniCode = jTextField1.getText();

        jLabel2.setText(uniCode);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                new UnicodeExample().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration
}

But the Unicode characters are not displaying. This is happening only when I get the value from an externel source as a parameter and set that value to the Swing control. But there is no problem if I hard code the string like String unicode="\u00a5"

Is there any fix to this problem ?

Hard coding works because \u00a5 is considered as one single unicode character in that case.

However, when getting from the JTextField, you are getting the STRING "\u00a5" which is equivalent to "\\u00a5" if you hard code.

To be more clear, try

char c = '\u00a5';

System.out.println(c);

Edit:

If you only insert unicode representations in the input box, this little code may help:

String uniCode = jTextField1.getText();

uniCode = uniCode.substring(2);        
char c = (char) Integer.parseInt(uniCode, 16);                

jLabel2.setText(c + "");

Do this in the actionPerformed method.