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In class we discussed Model 1 and Model 2 (MVC) architecture for web applications.   Describe the flow of a web request in the Model 1 architecture.   Describe the flow of a web request in the Model 2 architecture.   Name two benefits of Model 2 over Model 1.    

Write a servlet that will receive the form submission, create a User object containing the submitted data, and forward to a JSP.

List the four scopes that EL expressions search when resolving a name, in the order in which they are checked.

Briefly explain why we should use generics when implementing the Comparable interface.

Interfaces may contain … (select all that apply)

Shared Instructions Indicate the result of the snippet of code, assuming that it is in a main method of a class. More specifically, you must indicate one of the following: the output of the code, if the code compiles and runs without errors which statement(s) don’t compile (line #s, first line is #1) and why, if the code doesn’t compile when put in a main method the type of runtime error and the statement that caused it (line #, first line is #1) if the code compiles but doesn’t run properly Shared Code public class W { // In W.java public String toString() { return “W”; } public String sW() { return “1”; } } public class X extends W { // In X.java public String toString() { return “X”; } public String sX() { return “2”; } } public class Y extends X {} // In Y.java public class Z extends W {} // In Z.java Unique Snippet X x = new X(); W w = x; System.out.print(w.toString());

Order the following growth rates from most efficient (1) to the least (6): Quadratic, Linear, Exponential, Cubic, Logarithmic, Constant. Use this template for your answer (please type fully – you cannot copy): 1: [answer for 1st – the most efficient] 2: [answer for 2nd] 3: [answer for 3rd] 4: [answer for 4th] 5: [answer for 5th] 6: [answer for 6th – the least efficient]

What is the maximum number of interfaces a Java class can inherit from?

Shared Instructions Indicate the result of the snippet of code, assuming that it is in a main method of a class. More specifically, you must indicate one of the following: the output of the code, if the code compiles and runs without errors which statement(s) don’t compile (line #s, first line is #1) and why, if the code doesn’t compile when put in a main method the type of runtime error and the statement that caused it (line #, first line is #1) if the code compiles but doesn’t run properly Shared Code public class W { // In W.java public String toString() { return “W”; } public String sW() { return “1”; } } public class X extends W { // In X.java public String toString() { return “X”; } public String sX() { return “2”; } } public class Y extends X {} // In Y.java public class Z extends W {} // In Z.java Unique Snippet X x = new X(); System.out.print(((Z)x).toString());

Shared Instructions Indicate the result of the snippet of code, assuming that it is in a main method of a class. More specifically, you must indicate one of the following: the output of the code, if the code compiles and runs without errors which statement(s) don’t compile (line #s, first line is #1) and why, if the code doesn’t compile when put in a main method the type of runtime error and the statement that caused it (line #, first line is #1) if the code compiles but doesn’t run properly Shared Code public class W { // In W.java public String toString() { return “W”; } public String sW() { return “1”; } } public class X extends W { // In X.java public String toString() { return “X”; } public String sX() { return “2”; } } public class Y extends X {} // In Y.java public class Z extends W {} // In Z.java Unique Snippet W w = new Y(); System.out.print(w.sX());