Answer questions $1$ to $7$ on a word file; write a program for each of Q$\mathrm{.}8-$ Q$\mathrm{.}10.1.(13$ points$)$ Give a brief answer for each of the following questions: a$)$ What is the difference between an interpreted language and a compiled language? b$)$ What does JDK stand for? What does RE stand for? c$)$ What is the Java source filename extension, and what is the Java bytecode filename extension? d$)$ What is the command to compile a Java program e$)$ What is the command to run a Java program? f$)$ Explain the two compilation phases of Java programs. $9)$ Show the output of the following code: double amount $-$ System.out.println amount$/2)$; System.out.println$(5/2)$ h$)$ What data types are required for a switch variable? If the keyword break is not used after a case is processed, what is the next statement to be executed? $1)$ What is y after the following switch statement is executed? Rewrite the code using an if$-$else statement x$=3$; y $=3$: switch $($x$+3)\{$ case $6$: y$=1$ default: y $+-1\})$ Why does the Math class not need to be imported?