diff -r b559c7e7c4d4 src/java.base/share/classes/java/lang/String.java
--- a/src/java.base/share/classes/java/lang/String.java Thu Apr 09 16:32:22 2020 -0300
+++ b/src/java.base/share/classes/java/lang/String.java Mon Apr 20 11:47:17 2020 -0300
@@ -2888,15 +2888,6 @@
     }
 
     /**
- * {@preview Associated with text blocks, a preview feature of
- * the Java language.
- *
- * This method is associated with <i>text blocks</i>, a preview
- * feature of the Java language. Programs can only use this
- * method when preview features are enabled. Preview features
- * may be removed in a future release, or upgraded to permanent
- * features of the Java language.}
- *
      * Returns a string whose value is this string, with incidental
      * {@linkplain Character#isWhitespace(int) white space} removed from
      * the beginning and end of every line.
@@ -2970,7 +2961,7 @@
      * @see String#indent(int)
      * @see Character#isWhitespace(int)
      *
- * @since 13
+ * @since 15
      *
      */
     public String stripIndent() {
@@ -3011,15 +3002,6 @@
     }
 
     /**
- * {@preview Associated with text blocks, a preview feature of
- * the Java language.
- *
- * This method is associated with <i>text blocks</i>, a preview
- * feature of the Java language. Programs can only use this
- * method when preview features are enabled. Preview features
- * may be removed in a future release, or upgraded to permanent
- * features of the Java language.}
- *
      * Returns a string whose value is this string, with escape sequences
      * translated as if in a string literal.
      * <p>
@@ -3103,7 +3085,7 @@
      *
      * @jls 3.10.7 Escape Sequences
      *
- * @since 13
+ * @since 15
      */
     public String translateEscapes() {
         if (isEmpty()) {