Commons Lang、StandardToStringStyle#setUseIdentityHashCode
import org.apache.commons.lang.builder.StandardToStringStyle; public class C2009081300 { public static void main(String[] args) { StandardToStringStyle x = new StandardToStringStyle(); System.out.println(x.isUseIdentityHashCode()); x.setUseIdentityHashCode(false); System.out.println(x.isUseIdentityHashCode()); } }
で、
true false