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javanetbeansjtextfield

Limiting TextField inputs

I'm trying to make a textfield that limits a user input. I have this code:

 private void jTextField5KeyTyped(java.awt.event.KeyEvent evt) {                                     
//This limits the input:
 if(jTextField5.getText().length()>=2) {
    jTextField5.setText(jTextField5.getText().substring(0, 1));
}
}

It successfully limits the input. However, when I tried to press other characters on the keyboard, it changes the last character on the textfield. Any ideas to stop this? I know others will say that I should use Document(Can't remember) in making this kind of stuff, but I can't. I don't know how to do it in netbeans. Please help.

Solution

  • Here's a simple way to do it:

    private void textFieldKeyTyped(java.awt.event.KeyEvent evt) {                       
 if(textField.getText().length()>=2) {  
   evt.consume();
 }
}