JUnit4 results differ from @SuiteClasses and TestSuite

I am trying to run a JUnit4 test using categories against the AllTests test suite. Example 1 running Suite3 and Example 2 running Suite2 throws the following exception.

java.lang.Exception: Category annotations on Parameterized classes
are not supported on individual methods.

I need to generate a TestSuite as the test runs.

Any suggestions on how to fix the problem? Thanks to

Example 1

@RunWith(Categories.class)
@IncludeCategory(SlowTest.class)
@SuiteClasses(AllTests3.class)
public class Suite3 {
}

@RunWith(Suite.class)
@SuiteClasses({
           MathUtilTest.class, MathUtil2Test.class
})
public class AllTests3 {
}

      

        
        
        
      

    

example 2

@RunWith(Categories.class)
@IncludeCategory(SlowTest.class)
@SuiteClasses(AllTests2.class)
public class Suite2 {
}

public final class AllTests2 {
    public static TestSuite suite() {
        final TestSuite result = new TestSuite();
        result.addTest(new JUnit4TestAdapter(MathUtilTest.class));
        result.addTest(new JUnit4TestAdapter(MathUtil2Test.class));
        return result;
    }

    private AllTests2() {
    }