Esempio

public static void main(String[] args){
String CJKString = "\u4e1c\u897f\u5357\u5317\u4e2d";//$NON-NLS-1$
java.awt.TextField textfield = new java.awt.TextField();
textfield.setText(CJKString);
}
Soluzione
Utilizzare i componenti swing per visualizzare i dati multilingua.

public static void main(String[] args){
String CJKString = "\u4e1c\u897f\u5357\u5317\u4e2d";//$NON-NLS-1$
javax.swing.JTextField textfield = new javax.swing.JTextField();
textfield.setText(CJKString);
}