8333456: CompactNumberFormat integer parsing fails when string has no suffix

Reviewed-by: naoto

Author: Justin Lu

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

@@ -1736,7 +1736,7 @@ public Number parse(String text, ParsePosition pos) {
         // If parse integer only is true and the parsing is broken at
         // decimal point, then pass/ignore all digits and move pointer
         // at the start of suffix, to process the suffix part
-        if (isParseIntegerOnly()
+        if (isParseIntegerOnly() && position < text.length()
                 && text.charAt(position) == symbols.getDecimalSeparator()) {
             position++; // Pass decimal character
             for (; position < text.length(); ++position) {

test/jdk/java/text/Format/NumberFormat/LenientParseTest.java

@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 8327640 8331485
+ * @bug 8327640 8331485 8333456
  * @summary Test suite for NumberFormat parsing when lenient.
  * @run junit/othervm -Duser.language=en -Duser.country=US LenientParseTest
  * @run junit/othervm -Duser.language=ja -Duser.country=JP LenientParseTest
@@ -209,6 +209,18 @@ public void compactFmtSuccessParseTest(String toParse, double expectedValue) {
         assertEquals(expectedValue, successParse(cmpctFmt, toParse, toParse.length()));
     }
 
+    // 8333456: Parse values with no compact suffix -> which allows parsing to iterate
+    // position to the same value as string length which throws
+    // StringIndexOutOfBoundsException upon charAt invocation
+    @ParameterizedTest
+    @MethodSource("compactValidNoSuffixParseStrings")
+    @EnabledIfSystemProperty(named = "user.language", matches = "en")
+    public void compactFmtSuccessParseIntOnlyTest(String toParse, double expectedValue) {
+        cmpctFmt.setParseIntegerOnly(true);
+        assertEquals(expectedValue, successParse(cmpctFmt, toParse, toParse.length()));
+        cmpctFmt.setParseIntegerOnly(false);
+    }
+
     // ---- Helper test methods ----
 
     // Method is used when a String should parse successfully. This does not indicate
@@ -407,6 +419,18 @@ private static Stream<Arguments> compactValidFullParseStrings() {
         );
     }
 
+    // No compact suffixes
+    private static Stream<Arguments> compactValidNoSuffixParseStrings() {
+        return Stream.of(
+                Arguments.of("5", 5),
+                Arguments.of("50", 50),
+                Arguments.of("50.", 50),
+                Arguments.of("5,000", 5000),
+                Arguments.of("5,000.", 5000),
+                Arguments.of("5,000.00", 5000)
+        );
+    }
+
     // Replace the grouping and decimal separators with localized variants
     // Used during localization of data
     private static String localizeText(String text) {