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所在平台: Udemy |
课程主页: https://www.udemy.com/course/oca-certification-java-exam-practice-tests-oracle-preparation-part-two/
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**Coursera 课程《Oracle Java 认证考试 OCA 1Z0-808 准备 Part 2》课程总结** 本课程是为备考 Oracle Java 认证 Associate Java OCA 1Z0-808 考试而设计的。课程包含六套练习题，涵盖了考试的所有知识领域。每道题都附有详细的解释以及可运行的“Try-It-Yourself-Code”示例，帮助学员更深入地理解主题。所有示例代码均提供下载。 **课程大纲涵盖以下核心 Java 知识点：** * **Java 基础 (Java Basics):** * 变量的作用域定义 * Java 类的结构创建 * 使用 `main` 方法创建可执行的 Java 应用程序 * 从命令行运行 Java 程序并产生控制台输出 * 导入 Java 包以在代码中使用 * **Java 数据类型 (Working With Java Data Types):** * 声明和初始化变量，包括基本数据类型的类型转换 * 区分对象引用变量和基本变量 * 读写对象字段 * 解释对象的生命周期（创建、引用重置和垃圾回收） * 开发使用包装类（如 `Boolean`, `Double`, `Integer`）的代码 * **运算符与控制流 (Using Operators and Decision Constructs):** * 使用 Java 运算符，以及括号改变运算符优先级 * 使用 `==` 和 `equals()` 比较字符串和其他对象 * 创建 `if`, `if/else`, 和三元表达式 * 使用 `switch` 语句 * **数组 (Creating and Using Arrays):** * 声明、实例化、初始化和使用一维数组 * 声明、实例化、初始化和使用多维数组 * **循环结构 (Using Loop Constructs):** * 创建和使用 `while` 循环 * 创建和使用 `for` 循环（包括增强型 for 循环） * 创建和使用 `do/while` 循环 * 比较不同的循环结构 * 使用 `break` 和 `continue` * **方法与封装 (Working with Methods and Encapsulation):** * 创建带参数和返回值的 métodos，包括重载方法 * 为方法和字段应用 `static` 关键字 * 创建和重载构造器，区分默认和用户自定义构造器 * 应用访问修饰符 * 将封装原则应用于类 * 确定将值传递给改变值的方法时，对象引用和基本值如何变化 * **继承 (Working with Inheritance):** * 描述继承及其优势 * 开发使用多态的代码，重写方法 * 区分引用类型和对象类型 * 确定何时需要类型转换 * 使用 `super` 和 `this` 访问对象和构造器 * 使用抽象类和接口 * **异常处理 (Handling Exceptions):** * 区分检查型异常、非检查型异常和错误 * 创建 `try-catch` 块，了解异常如何改变程序正常流程 * 描述异常处理的优势 * 创建和调用抛出异常的方法 * 识别常见的异常类（如 `NullPointerException`, `ArithmeticException`, `ArrayIndexOutOfBoundsException`, `ClassCastException`） * **Java API 选定类 (Working with Selected classes from the Java API):** * 使用 `StringBuilder` 类及其方法操作数据 * 创建和操作字符串 * 使用 `java.time` 包中的类（`LocalDateTime`, `LocalDate`, `LocalTime`, `DateTimeFormatter`, `Period`）创建和操作日历数据 * 声明和使用特定类型的 `ArrayList` * 编写简单的 Lambda 表达式以消费 Lambda Predicate 表达式
Now is the time to get certified for Java!Oracle Certification Associate Java OCA 1Z0-808.There are six Practice Tests with preparation questions from all knowledge areas.Every question has an explanation and a Try-It-Yourself-Codewhich you can run to better understand the topic.You can download the Try-It-Yourself-Code for all questions.Exam SyllabusJava BasicsDefine the scope of variablesDefine the structure of a Java classCreate executable Java applications with a main method; run a Java program from the command line; produce console outputImport other Java packages to make them accessible in your codeCompare and contrast the features and components of Java such as: platform independence, object orientation, encapsulation, etc.Working With Java Data TypesDeclare and initialize variables (including casting of primitive data types)Differentiate between object reference variables and primitive variablesKnow how to read or write to object fieldsExplain an Object's Lifecycle (creation, "dereference by reassignment" and garbage collection)Develop code that uses wrapper classes such as Boolean, Double, and IntegerUsing Operators and Decision ConstructsUse Java operators; use parentheses to override operator precedenceTest equality between Strings and other objects using == and equals ()Create if and if/else and ternary constructsUse a switch statementCreating and Using ArraysDeclare, instantiate, initialize and use a one-dimensional arrayDeclare, instantiate, initialize and use multi-dimensional arraysUsing Loop ConstructsCreate and use while loopsCreate and use for loops including the enhanced for loopCreate and use do/while loopsCompare loop constructsUse break and continueWorking with Methods and EncapsulationCreate methods with arguments and return values; including overloaded methodsApply the static keyword to methods and fieldsCreate and overload constructors; differentiate between default and user defined constructorsApply access modifiersApply encapsulation principles to a classDetermine the effect upon object references and primitive values when they are passed into methods that change the valuesWorking with InheritanceDescribe inheritance and its benefitsDevelop code that makes use of polymorphism; develop code that overrides methods; differentiate between the type of a reference and the type of an objectDetermine when casting is necessaryUse super and this to access objects and constructorsUse abstract classes and interfacesHandling ExceptionsDifferentiate among checked exceptions, unchecked exceptions, and ErrorsCreate a try-catch block and determine how exceptions alter normal program flowDescribe the advantages of Exception handlingCreate and invoke a method that throws an exceptionRecognize common exception classes (such as NullPointerException, ArithmeticException, ArrayIndexOutOfBoundsException, ClassCastException)Working with Selected classes from the Java APIManipulate data using the StringBuilder class and its methodsCreate and manipulate StringsCreate and manipulate calendar data using classes from java.time.LocalDateTime, java.time.LocalDate, java.time.LocalTime, java.time.format.DateTimeFormatter, java.time.PeriodDeclare and use an ArrayList of a given typeWrite a simple Lambda expression that consumes a Lambda Predicate expression
