java 8中有"instanceof"的替换吗？

Question

如何更改下面的代码在java 8中使用流来检查类型对象并进行转换？java 8还有其他选择吗？

private void fillObject(Object role, String issuingRange) {

        if (role != null) {
            List<String> rangeList2 = null;
            if (role instanceof ArrayList<?>) {
                rangeList2 = (ArrayList<String>) role ;
            } else if (role instanceof String) {
                rangeList2 = new ArrayList(Arrays.asList(role ));
            }
}

Answer 1

"instanceof"的这种特殊用法的替代方案只是简单地有两种方法.

private void fillObject(ArrayList<String> role, String issuingRange) {
        ...
}
private void fillObject(String role, String issuingRange) {
        fillObject(new ArrayList(Arrays.asList(role)), issuingRange);
}