1. For each of the following strings, write "yes" or "no" depending on whether the string is a legal names of a Java variable.; if your answer is "no", briefly explain why.
September5
5September
September 5
September_5
September$
2. Translate the following sequence of Java statements into English; show, step by step, what will happen after each of these statements.
double grade;
grade = 3.0;
grade = grade + 1.0;
3. What is the result of the following Java operations:
9 / 5
9.0 / 5.0
9 % 5
-9 % 5