package util; import java.util.Comparator; import javax.swing.tree.DefaultMutableTreeNode; public class TreeStringComparatorName implements Comparator<DefaultMutableTreeNode> { public int compare( DefaultMutableTreeNode o1, DefaultMutableTreeNode o2 ) { String s1 = o1.getUserObject().toString(); String s2 = o2.getUserObject().toString(); return s1.compareToIgnoreCase( s2 ); } }