JAVA question

1) In general what is a for loop used to do?

2)In general what is a while loop used to do?

3)In general what is a do loop used to do (including how is it different from a while loop)?

4) How does the JVM accomplish a loop?

5) One cycle through a loop is called a?

6)Describe a nested loop.

7) What is a switch?

8) What are the two ways the compiler will handle the creation the bytecode for a switch? How does it pick which to do?

9) What tow types are allowed for the expression in a switch (switch(expression) ? What must be true of the cases?