Chapter 1
Help!
|
|
||||
|---|---|---|---|---|---|
| What 3 things can legal Java identifiers start with? | underscore, letter, currency character
🗑
|
||||
| Legal Java identifiers can contain... (4) | letter, underscore, currency character, number
🗑
|
||||
| Java Identifiers are case sensitive. True/False | True
🗑
|
||||
| Name two things a legal Java identifier cannot use? | 1) cannot start with a number 2) cannot use a Java keyword/reserved word
🗑
|
||||
| In Java Coding Standards, a class or interface name should be... (3) | 1) first character uppercase 2) camelCase 3) should typically be a noun.
🗑
|
||||
| In Java Coding Standards, a method name should be... (3) | 1) first character lowercase 2) camelCase 3) should typically be a noun-verb pair.
🗑
|
||||
| In Java Coding Standards, a variable name should be... (3) | 1) first character lowercase 2) camelCase 3) should be a short meaningful noun.
🗑
|
||||
| In Java Coding Standards, a constant should be... (4) | 1) static 2) final 3) upercase characters 4) underscore character separates words
🗑
|
||||
| In JavaBeans standards, a setter method should be... (4) | 1) "set" followed by property name 2) public 3) takes argument whose type is same as the property 4) void return type
🗑
|
||||
| In JavaBeans standards, a getter method should be... (4) | 1) "get" followed by property name 2) public 3) takes no argumentsos 4) return type matches property type.
🗑
|
||||
| What are JavaBean Listener naming rules? (3) | 1) to register listener: lowercase "add", then listener type, then "Listener" 2) to remove a listener: lowercase "remove", then listener type, then the word "Listener" 3) the type of Listener (add or remove) must be paased to method as an argument
🗑
|
||||
| Name Java access modifiers (3) | public, private, protected
🗑
|
||||
| What are the Java access controls (4) | public, private, protected, default
🗑
|
||||
| A class can have what access modifiers | public and default
🗑
|
||||
| Class access means you can... (3) | 1) create an instance of the class 2) extend the class 3) access the accessable methods and variables in the class
🗑
|
||||
| What non-access modifiers can a class have? (3) | final, abstract, strictfp
🗑
|
||||
| What does it mean when a class or method is marked strictfp | Any method or method code in the class conforms to IEEE 754 standards for floating points (behavior is not platform specific)
🗑
|
||||
| Final keyword means: (3) | 1) class cannot be subclassed 2) method cannot be overridden 3) variable cannot be assigned
🗑
|
||||
| Abstract classes can never be: | instantiated
🗑
|
||||
| Methods marked abstract end in: | a semi-colon
🗑
|
||||
| If one method in a class is abstract: | the whole class must be marked abstract.
🗑
|
||||
| If a class is abstract, it cannot be: | final
🗑
|
||||
| If a class is final, it cannot be: | abstract
🗑
|
||||
| An interface is a contract. True/False | True
🗑
|
||||
| An interface is a 100% _____ class. | abstract
🗑
|
||||
| Interfaces can be implemented by... | any class from any inheritance tree.
🗑
|
||||
| Interfaces are implicitly: | public and abstract, whether declared or not.
🗑
|
||||
| Interface variables must be declared as: (3) | public, static, final
🗑
|
||||
| Interface modifiers cannot be: (4) | static, final, strictfp, native
🗑
|
||||
| Interfaces can extend: | 1 or more interfaces.
🗑
|
||||
| Interfaces cannot extend | anything other than an interface.
🗑
|
||||
| Interfaces cannot implement | another interface or class.
🗑
|
||||
| An interface declaration must contain | the keyword "interface"
🗑
|
||||
| Interface types cannot be used polymorphically. True/False | False
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
drema
Popular Computers sets