Consider the following source code:
---
public class Test {
     private void test(int i,) { }
}
---

Compiling this leads to three compile-time errors:
---
$ javac Test.java
Test.java:2: error: illegal start of type
     private void test(int i,) { }
                             ^
Test.java:2: error: ')' expected
     private void test(int i,) { }
                              ^
Test.java:2: error: ';' expected
     private void test(int i,) { }
                                ^
3 errors
---

Out of these, only the first error is really significant, the other two errors are follow-up errors caused by tokens removed by code in JavacParser (in reportSyntaxError around line 459):
---
        if (token.pos == errorPos)
            nextToken(); // guarantee progress
---