Commons Lang、StandardToStringStyle#setSummaryObjectEndText

import org.apache.commons.lang.builder.StandardToStringStyle;

public class C2009080900 {
    public static void main(String[] args) {
        StandardToStringStyle x = new StandardToStringStyle();
        System.out.println(x.getSummaryObjectEndText());

        x.setSummaryObjectEndText("]");
        System.out.println(x.getSummaryObjectEndText());
    }
}

で、

>
]