src/java.desktop/share/classes/javax/swing/text/AbstractDocument.java

*** 1795,1805 ****
              if (a != null) {
                  addAttributes(a);
              }
          }
  
!         private final void indent(PrintWriter out, int n) {
              for (int i = 0; i < n; i++) {
                  out.print("  ");
              }
          }
  
--- 1795,1805 ----
              if (a != null) {
                  addAttributes(a);
              }
          }
  
!         private void indent(PrintWriter out, int n) {
              for (int i = 0; i < n; i++) {
                  out.print("  ");
              }
          }
  
*** 2061,2071 ****
                  attributes =
                      context.removeAttribute(attributes, StyleConstants.ResolveAttribute);
              }
          }
  
!         private final void checkForIllegalCast() {
              Thread t = getCurrentWriter();
              if ((t == null) || (t != Thread.currentThread())) {
                  throw new StateInvariantError("Illegal cast to MutableAttributeSet");
              }
          }
--- 2061,2071 ----
                  attributes =
                      context.removeAttribute(attributes, StyleConstants.ResolveAttribute);
              }
          }
  
!         private void checkForIllegalCast() {
              Thread t = getCurrentWriter();
              if ((t == null) || (t != Thread.currentThread())) {
                  throw new StateInvariantError("Illegal cast to MutableAttributeSet");
              }
          }