Java SE7 Fundamentals

Java Basics
Define the scope of variables
Define the structure of a Java class
Create executable Java applications with a main method
Import other Java packages to make them accessible in your code

Working With Java Data Types
Declare and initialize variables
Differentiate between object reference variables and primitive variables
Read or write to object fields
Explain an Object’s Lifecycle (creation, “dereference” and garbage collection)
Call methods on objects
Manipulate data using the StringBuilder class and its methods
Creating and manipulating Strings

Using Operators and Decision Constructs
Use Java operators
Use parenthesis to override operator precedence
Test equality between Strings and other objects using == and equals ()
Create if and if/else constructs
Use a switch statement

Creating and Using Arrays
Declare, instantiate, initialize and use a one-dimensional array
Declare, instantiate, initialize and use multi-dimensional array
Declare and use an ArrayList

Using Loop Constructs
Create and use while loops
Create and use for loops including the enhanced for loop
Create and use do/while loops
Compare loop constructs
Use break and continue

Working with Methods and Encapsulation
Create methods with arguments and return values
Apply the static keyword to methods and fields
Create an overloaded method
Differentiate between default and user defined constructors
Create and overload constructors
Apply access modifiers
Apply encapsulation principles to a class
Determine the effect upon object references and primitive values when they are passed into methods that change the values

Working with Inheritance
Implement inheritance
Develop code that demonstrates the use of polymorphism
Differentiate between the type of a reference and the type of an object
Determine when casting is necessary
Use super and this to access objects and constructors
Use abstract classes and interfaces

Handling Exceptions
Differentiate among checked exceptions, RuntimeExceptions and Errors
Create a try-catch block and determine how exceptions alter normal program flow
Describe what Exceptions are used for in Java
Invoke a method that throws an exception
Recognize common exception classes and categories