8316187: Modernize examples in StringTokenizer and {Date,Number}Format

Reviewed-by: naoto

Author: Pavel Rappo

src/java.base/share/classes/java/text/DateFormat.java

@@ -85,8 +85,8 @@
  * <blockquote>
  * {@snippet lang=java :
  * DateFormat df = DateFormat.getDateInstance();
- * for (int i = 0; i < myDate.length; ++i) {
- *     output.println(df.format(myDate[i]) + "; ");
+ * for (Date myDate : dates) {
+ *     output.println(df.format(myDate) + "; ");
  * }
  * }
  * </blockquote>

src/java.base/share/classes/java/text/NumberFormat.java

@@ -82,8 +82,8 @@
  * <blockquote>
  * {@snippet lang=java :
  * NumberFormat nf = NumberFormat.getInstance();
- * for (int i = 0; i < myNumber.length; ++i) {
- *     output.println(nf.format(myNumber[i]) + "; ");
+ * for (var myNumber : numbers) {
+ *     output.println(nf.format(myNumber) + "; ");
  * }
  * }
  * </blockquote>

src/java.base/share/classes/java/util/StringTokenizer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1994, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -83,8 +83,8 @@
  * method can be used to break up a string into its basic tokens:
  * <blockquote><pre>
  *     String[] result = "this is a test".split("\\s");
- *     for (int x=0; x&lt;result.length; x++)
- *         System.out.println(result[x]);
+ *     for (String r : result)
+ *         System.out.println(r);
  * </pre></blockquote>
  * <p>
  * prints the following output: