code: package com.google.checkstyle.test.chapter4formatting.rule451wheretobreak;
  
  import java.util.Arrays;
  
  public class InputSeparatorWrapMethodRef {
  
      void goodCase() {
          String[] stringArray = { "Barbara", "James", "Mary", "John",
              "Patricia", "Robert", "Michael", "Linda" };
          Arrays.sort(stringArray, String
                  ::compareToIgnoreCase);
      }
  
      void badCase() {
          String[] stringArray = { "Barbara", "James", "Mary", "John",
              "Patricia", "Robert", "Michael", "Linda" };
          /*warn*/ Arrays.sort(stringArray, String::
                  compareToIgnoreCase);
      }
  }
  