src/jdk.jcmd/share/classes/sun/tools/jstat/RawOutputFormatter.java

rev 10947 : 8055723: Replace concat String to append in StringBuilder parameters

*** 48,58 ****
          if (header == null) {
              // build the header string and prune out any unwanted monitors
              StringBuilder headerBuilder = new StringBuilder();
              for (Iterator<Monitor> i = logged.iterator(); i.hasNext(); /* empty */ ) {
                  Monitor m = i.next();
!                 headerBuilder.append(m.getName() + " ");
              }
              header = headerBuilder.toString();
          }
          return header;
      }
--- 48,58 ----
          if (header == null) {
              // build the header string and prune out any unwanted monitors
              StringBuilder headerBuilder = new StringBuilder();
              for (Iterator<Monitor> i = logged.iterator(); i.hasNext(); /* empty */ ) {
                  Monitor m = i.next();
!                 headerBuilder.append(m.getName()).append(' ');
              }
              header = headerBuilder.toString();
          }
          return header;
      }