When renaming a class with overloaded static imports, the renaming duplicates the static import declarations. Example:

Foo.java:

    package example;

    public class Foo
    {
        public static void foo(int n) { }
        public static void foo(long n) { }
    }

Example.java:

    package example;

    import static example.Foo.foo;

    public class Example
    {
        { foo(2); }
    }

Renaming the Example class results in a duplicate static import declaration:

    import static example.Foo.foo;
    import static example.Foo.foo;

Renaming the class again duplicates the imports again:

    import static example.Foo.foo;
    import static example.Foo.foo;
    import static example.Foo.foo;
    import static example.Foo.foo;

Things get really slow after a dozen renamings or so. ;)