Application: gvSIG desktop » Library: org.gvsig.tools

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package org.gvsig.tools.swing.api.documentfilters;

import javax.swing.JTextField;

import org.apache.commons.lang3.StringUtils;

/**

 *

 * @author fdiaz

 */

public class PositiveDoubleDocumentFilter extends DoubleDocumentFilter {

    public PositiveDoubleDocumentFilter(JTextField text) {

        super(text);

    }

    public static boolean isValid(JTextField text) {

        String s = text.getText();

        if( StringUtils.isEmpty(s) ) {

            return true;

        }

        try {

            double n = Double.parseDouble(s);

            return n >= 0;

        } catch (Exception ex) {

            return false;

        }

    }

}