package com.brettlee.crypto; import java.io.Serializable; import javax.swing.text.DefaultStyledDocument; public class MyDefaultStyledDocument extends DefaultStyledDocument implements Serializable { private static final long serialVersionUID = 0000000000000000001L; boolean documentChanged = false; public MyDefaultStyledDocument() { super(); } void setDocumentChanged( boolean truth ) { documentChanged = truth; } boolean getDocumentChanged() { return documentChanged; } }