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

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

*** 63,88 ****
      }
  
      public SyntaxException(int lineno, Set<String> expected, Token found) {
          StringBuilder msg = new StringBuilder();
  
!         msg.append("Syntax error at line " + lineno + ": Expected one of \'");
  
!         boolean first = true;
!         for (Iterator<String> i = expected.iterator(); i.hasNext(); /* empty */) {
!             String keyWord = i.next();
!             if (first) {
!                 msg.append(keyWord);
!                 first = false;
!             } else {
!                 msg.append("|" + keyWord);
              }
          }
  
!         msg.append("\', Found " + found.toMessage());
!         message = msg.toString();
      }
  
      public String getMessage() {
          return message;
      }
  }
--- 63,85 ----
      }
  
      public SyntaxException(int lineno, Set<String> expected, Token found) {
          StringBuilder msg = new StringBuilder();
  
!         msg.append("Syntax error at line ").append(lineno)
!                 .append(": Expected one of \'");
  
!         for (String keyWord : expected) {
!             msg.append(keyWord).append('|');
          }
+         if (!expected.isEmpty()) {
+             msg.setLength(msg.length() - 1);
          }
  
!         message = msg.append("\', Found ").append(found.toMessage()).toString();
      }
  
      public String getMessage() {
          return message;
      }
  }
+