src/java.base/share/classes/java/time/format/DateTimeFormatterBuilder.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 1437,1447 ****
       * @param literal  the literal to append, not null
       * @return this, for chaining, not null
       */
      public DateTimeFormatterBuilder appendLiteral(String literal) {
          Objects.requireNonNull(literal, "literal");
!         if (literal.length() > 0) {
              if (literal.length() == 1) {
                  appendInternal(new CharLiteralPrinterParser(literal.charAt(0)));
              } else {
                  appendInternal(new StringLiteralPrinterParser(literal));
              }
--- 1437,1447 ----
       * @param literal  the literal to append, not null
       * @return this, for chaining, not null
       */
      public DateTimeFormatterBuilder appendLiteral(String literal) {
          Objects.requireNonNull(literal, "literal");
!         if (!literal.isEmpty()) {
              if (literal.length() == 1) {
                  appendInternal(new CharLiteralPrinterParser(literal.charAt(0)));
              } else {
                  appendInternal(new StringLiteralPrinterParser(literal));
              }
*** 1830,1840 ****
                  }
                  if (pos >= pattern.length()) {
                      throw new IllegalArgumentException("Pattern ends with an incomplete string literal: " + pattern);
                  }
                  String str = pattern.substring(start + 1, pos);
!                 if (str.length() == 0) {
                      appendLiteral('\'');
                  } else {
                      appendLiteral(str.replace("''", "'"));
                  }
  
--- 1830,1840 ----
                  }
                  if (pos >= pattern.length()) {
                      throw new IllegalArgumentException("Pattern ends with an incomplete string literal: " + pattern);
                  }
                  String str = pattern.substring(start + 1, pos);
!                 if (str.isEmpty()) {
                      appendLiteral('\'');
                  } else {
                      appendLiteral(str.replace("''", "'"));
                  }
  
*** 4330,4340 ****
  
          private PrefixTree(String k, String v, PrefixTree child) {
              this.key = k;
              this.value = v;
              this.child = child;
!             if (k.length() == 0){
                  c0 = 0xffff;
              } else {
                  c0 = key.charAt(0);
              }
          }
--- 4330,4340 ----
  
          private PrefixTree(String k, String v, PrefixTree child) {
              this.key = k;
              this.value = v;
              this.child = child;
!             if (k.isEmpty()) {
                  c0 = 0xffff;
              } else {
                  c0 = key.charAt(0);
              }
          }