18 lines
511 B
Java
18 lines
511 B
Java
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import javax.swing.text.PlainDocument;
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import javax.swing.text.AttributeSet;
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import javax.swing.text.BadLocationException;
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public class JTextFieldCharLimit extends PlainDocument{
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private int limit;
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public JTextFieldCharLimit(int limit){
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this.limit = limit;
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}
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public void insertString(int offset, String str, AttributeSet set) throws BadLocationException{
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if (str == null){
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return;
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} else if ((getLength() + str.length() - getLength()) <= limit){
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super.insertString(offset, str, set);
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}
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}
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}
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