Final Review by Mrs. Tabares

13.What are the differences between low and high level languages?

2016-12-16 14:10:43 UTC

The difference is that low level language is writen so the computer can understand it faster. High level language is abit harder to compile and understand

9.Identify the structure and parts of a method signature.

2016-12-16 14:12:01 UTC

The description of each method shown in the object menu, access modifiers(public or private),return type, method name(boolean, void, int), parameter list(additional information)

31. What are variables used for?

2016-12-16 14:13:02 UTC

Variables can be used to store information ( objects or values) for later use.
Samantha Olivares

11. What are the resources that can help design the solution in the programming process?

2016-12-16 14:13:11 UTC

Checking Syntax errors????

27. What is the difference between sub and super classes?

2016-12-16 14:13:22 UTC

Super clases are the main classes that may have a sub class. Sub classes are the classes that are under the super classes. They inherit the methods from the super class.

Nathaniel Garcia

35.

2016-12-16 14:13:29 UTC

What is a loop? And how can you identify how many times it will execute?

A loop is a piece of code that will execute a set number of times(or infinitely is written incorrectly).
To identify the number of times locate the i variable or the integer variable used and see what number it has been set to stop at. Example: i < 5
Loop example:

for(int i=0 ; i < 5 ; i++)
{
System.out.println(“i is : “ + i);
}

25.What are Syntax errors?

jonesdesh001 — 2016-12-16 14:13:34 UTC

Ex: setimage(); , mve();.

29.What did the makeKeys() method help us do in the piano scenario?

2016-12-16 14:13:35 UTC

it makes you help put the keys in the same location in the world.

21. How do you interact with Greenfoot objects?

2016-12-16 14:13:37 UTC

Place objects into the world, interact with them by right-clicking the object. The pop up " object menu" will show up or you can use the class diagram menu and make changes with the source code with many operations the object can perform.
Violeta Cahue

7. What can you do with boolean methods?

2016-12-16 14:13:49 UTC

If the statement is true then it can act but if it's false then it won't act.

36.

2016-12-16 14:13:53 UTC

How do we avoid an infinite loop? What code do you use?
Avoid an infinite loop by initializing integer variable values to a set number so that the code will stop executing once it has counted to that set number.
Example: i<5

for(int i=0 ; i < 5 ; i++)

In this example the code stops after executing 5 times.

12. What bases do decimal and binary use?

2016-12-16 14:13:54 UTC

Decimal and Binary use base-10.

23.

2016-12-16 14:14:15 UTC

Identify parts of the main window
interaction buttons, world and class buttons.
Emily Garcia

33. What are the logic operators for NOT and AND?

2016-12-16 14:14:16 UTC

NOT = !
AND =&&

24.

2016-12-16 14:14:20 UTC

Define parameter and what they are used for?
Additional information can be passed to some methods within the parentheses.
Emily Garcia

34.

2016-12-16 14:14:45 UTC

Why would you add an else-statement to an if-statement?

You would add an else statement to an if-statement , B/C
if the if statement's conditions are not true. So it will move on to the else statement and the program will execute it.

5. what is string concatenation?How is it used?

2016-12-16 14:16:04 UTC

A string concatenation is the operation of joining charecter string end-to-end. Example; "snow" ans "ball" is "snowball"

26. Identify void and non-void return types.

jonesdesh001 — 2016-12-16 14:16:12 UTC

public void class () = void method, isAtEdge(); = void return types.
booleanisAtEdge() = non void return type.

32.What is dot notation? Provide an example.

2016-12-16 14:17:51 UTC

A dot notation is when we wish to call a method and is not in our own class or inherited, we need to specify the class or object that has the method name, followed by a dot.
example
if(Greenfoot.isKeyDown("left"))
or
Greenfoot.stop()

Samantha Olivares

1.

2016-12-16 14:17:52 UTC

What do the following methods do and how can you use them to create movement?

getX() and getY()

it helps us put an object into a specific location.

28. What kind of return types are commands? Which return types are questions?

2016-12-16 14:18:43 UTC

Commands usually have a void or nonvoid return type. questions have a boolean return type.

Nathaniel Garcia

15. Convert 10 to binary. And 00111000 to decimal.

2016-12-16 14:18:59 UTC

10 = 0101, 00111000 = 56

8.

2016-12-16 14:19:46 UTC

wolf

2016-12-16 14:20:12 UTC

19.How are curly braces used?

To enter info into a method as well as open and close a method.

20.Identify the structure of an if-statement? How do conditions and instructions work?

if (isTouching(Worm.class) )

{

removeTouching(Worm.class);

22. What is a instance?

2016-12-16 14:20:36 UTC

A instance is a object.
Violeta Cahue

2.

2016-12-16 14:20:45 UTC

What is the purpose of parameterizing a method?

To pass additional data and to make them more flexible and useful.

14. What is a byte? Bit? And how many bits does a byte have?

2016-12-16 14:20:45 UTC

A byte is a group of binary numbers. A bit is the smallest number in binary. A bit has 1 byte and one byte has 8 bits.

8. What does Greenfoot do when you compile? Can the computer understand Java?

2016-12-16 14:21:04 UTC

Greenfoot saves and determines if their is a error when you compile. The computer can understand Java.

16. What does a computer program do?

2016-12-16 14:22:51 UTC

A computer program is a collection of instructions that performs a specific task when executed.

3.what are access modifiers? and how do we use them?

2016-12-16 14:24:41 UTC

they are private and public

6. What is the syntax rule for class names?

2016-12-16 14:25:55 UTC

The first letter of a class name must be a capital letter.

40.Identify all return types

2016-12-16 14:25:58 UTC

int, boolean and void
int returns integers, boolean returns true or false.
void returns an action.

37. what is a while loop

2016-12-16 14:26:12 UTC

The syntax of a while loop is − while(Boolean_expression) { // Statements } Here, statement(s) may be a single statement or a block of statements. The condition may be any expression, and true is any non zero value.

39. What is a method name and how do you identify one from a signature?

2016-12-16 14:26:28 UTC

A method name helps you identify the call of the method, for example: viod setDerrection(int direction)

30.What is abstraction?

2016-12-16 14:28:52 UTC

Occurs in many different forms in programing. One of them is the technique to write code that can solve a whole class of problems, rather than a single specific problem.

10. Identify how many parameters are in a given signature.

2016-12-16 14:29:28 UTC

* Public void move(int distance)
1

4.What does this keyword do?

2016-12-16 14:36:54 UTC

to refer to the current object

18. Where can you access the source code and documentation?

2016-12-16 14:39:13 UTC

You can access the source code and documentation by opening the editor and going to the top right corner

17. Identify all the ways Greenfoot can help you find errors.

2016-12-16 14:41:16 UTC

It will open a window and identify what and where the errors are.

38. Why do we separate the methods?

2016-12-16 14:41:44 UTC

why separate the methods so it could be easier to read and to work with

2016-12-19 14:16:47 UTC