javax.swing.JTextField jt=new javax.swing.JTextField(20);
this.getContentPane().add(jt);
jt.addFocusListener(new java.awt.event.FocusAdapter(){
public void focusLost(FocusEvent e) {
JOptionPane.showMessageDialog(null,"lostFocus!");
}
});
this.getContentPane().add(jt);
jt.addFocusListener(new java.awt.event.FocusAdapter(){
public void focusLost(FocusEvent e) {
JOptionPane.showMessageDialog(null,"lostFocus!");
}
});
解决方案 »
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