1:Which modifier should be applied to a method for the lock of object this to be obtained prior to excution any of the method body?

　　A.synchronized

　　B.abstract

　　C.final

　　D.static

　　2:

　　Give the following java source fragement:

　　//point x

　　public class Interesting{

　　//do something

　　}

　　Which statement is correctly Java syntax at point x?

　　Give the following java source fragement:

　　//point x

　　public class Interesting{

　　//do something

　　}

　　Which statement is correctly Java syntax at point x?

　　A.public class MyClass{//do other thing…}

　　B.static int PI=3.14

　　C.class MyClass{//do something…}

　　D.none