Basic knowledge (1)-Java SE 8 Programmer I (1z0-808)

Source: Internet
Author: User
Tags java se

Java Basics
    • Define the scope of variables
    • Define the structure of a Java class
    • Create executable Java applications with a main method; Run a Java program from the command line; including console output.
    • Import other Java packages to make them accessible in your code
    • Compare and contrast the features and components of Java such as:platform independence, object orientation, encapsulation , etc.
working with Java Data Types
    • Declare and initialize variables (including casting of primitive data types)
    • Differentiate between object reference variables and primitive variables
    • Know how to read or write to object fields
    • Explain an Object ' s Lifecycle (creation, "dereference by reassignment" and garbage collection)
    • Develop code that uses wrapper classes such as Boolean, Double, and Integer.
Using Operators and decision constructs
    • Use Java operators; including parentheses to override operator precedence
    • Test equality between Strings and other objects using = = and equals ()
    • Create if and if/else and ternary 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
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; Including overloaded methods
    • Apply the Static keyword to methods and fields
    • Create and overload constructors; including impact on default constructors
    • Apply access Modifiers
    • Apply encapsulation principles to a class
    • Determine the effect upon object references and primitive values when they is passed into methods the values
working with Inheritance
    • Describe inheritance and its benefits
    • Develop code that demonstrates the use of polymorphism; Including overriding and object type versus reference type
    • 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, unchecked exceptions, and Errors
    • Create a try-catch block and determine how to exceptions alter normal program flow
    • Describe the advantages of Exception handling
    • Create and invoke a method that throws an exception
    • "Recognize common exception classes (such as NullPointerException, Arithmeticexcpetion, arrayindexoutofboundsexception , classcastexception) "
working with Selected classes from the Java API
    • Manipulate data using the StringBuilder class and its methods
    • Creating and manipulating Strings
    • Create and manipulate calendar data using classes from Java.time.LocalDateTime, Java.time.LocalDate, Java.time.LocalTime , Java.time.format.DateTimeFormatter, Java.time.Period
    • Declare and use an ArrayList of a given type
    • Write a simple lambda expression, that consumes a lambda predicate expression

Basic knowledge (1)-Java SE 8 Programmer I (1z0-808)

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