Commons Lang、StandardToStringStyle#setArraySeparator
import org.apache.commons.lang.builder.StandardToStringStyle; public class C2009072800 { public static void main(String[] args) { StandardToStringStyle x = new StandardToStringStyle(); System.out.println(x.getArraySeparator()); x.setArraySeparator("."); System.out.println(x.getArraySeparator()); } }
で、
, .