Literals in java must be appended by which of these?OptionsILDL and I

In Java, literals are basic representations of your data types. Depending on the type of the literal, different suffixes might be used:

1. Integer literals do not need to be appended by any letter unless they are in long form. In that case, they are appended by an 'L' or 'l'. For example, 123L or 123l.

2. Floating-point literals are by default considered as double in Java. If you want to specify them as float, they need to be appended by an 'F' or 'f'. For example, 123.45F or 123.45f.

3. Double literals can be optionally appended by a 'D' or 'd', although it's not commonly done because, as mentioned, floating-point literals are considered as double by default. For example, 123.45D or 123.45d.

So, to answer your question, literals in Java must be appended by 'L' for long, 'F' for float, and 'D' for double. Therefore, the correct option is 'L and D'. The 'I' is not used to append any literals in Java.