在全球有數(shù)十億臺(tái)裝置在運(yùn)行它，Android是最受歡迎的行動(dòng)作業(yè)系統(tǒng)之一。如果你有興趣為Android創(chuàng)建行動(dòng)應(yīng)用程序，你需要對(duì)Java程式語(yǔ)言有牢固的掌握。在本文中，我們將討論Android程式設(shè)計(jì)所需的基本Java概念。

理解Java語(yǔ)言

• Android應(yīng)用程式是使用Java創(chuàng)建的，Java是一種高級(jí)程式語(yǔ)言，用於創(chuàng)建各種應(yīng)用程式。

• 作為一種物件導(dǎo)向的語(yǔ)言，它將資料分組為具有屬??性（如屬性和方法）的物件。 Java還是與平臺(tái)無(wú)關(guān)的，因此使用Java編寫(xiě)的程式可以在支援Java虛擬機(jī)器（JVM）的任何系統(tǒng)上執(zhí)行。

物件導(dǎo)向程式設(shè)計(jì)在Java中

The paradigm of programming known as "object-oriented programming" is built around the idea of?? objects. Even basic data types like integers and floating-point numbers are considered objects in Java. , extendable code that is simple to maintain.

Java中的資料類(lèi)型和變數(shù)

• Java支援各種資料類(lèi)型，包括字元、布林值、浮點(diǎn)數(shù)、整數(shù)等等。在Java中，變數(shù)用於儲(chǔ)存數(shù)據(jù)，必須先定義才能使用。

• Because Java is a tightly typed language, a variable's data type must be specified explicitly.

Control Structures in Java

• Java employs control structures to regulate the flow of its code.

• 如果語(yǔ)句、迴圈和開(kāi)關(guān)語(yǔ)句是Java中的三個(gè)主要控制結(jié)構(gòu)類(lèi)別。

• While迴圈用於在特定條件為真時(shí)持續(xù)執(zhí)行程式碼，而if語(yǔ)句用於在特定條件為真時(shí)執(zhí)行程式碼。

• Switch語(yǔ)句用於根據(jù)變數(shù)的值運(yùn)行程式碼。

Arrays and Strings in Java

• In Java, collections of data are stored as arrays.

• #They can be used to hold a set of floating-point values, integers, or any other kind of data.

• Strings are an essential component of many Java programmes because they are used to hold sequences of characters.

#Java中的類(lèi)別和物件

• 類(lèi)別用於在Java中定義物件。

• 它們作為物件的模板，定義了它們的屬性和操作。

• 在Java程式設(shè)計(jì)中，物件（即類(lèi)別的實(shí)例）用來(lái)表示實(shí)際的物理物件。

Inheritance and Polymorphism in Java

• #Java has a feature called inheritance that lets one class take properties and functions from another class.

• The capacity of an object to assume various forms is known as polymorphism.

Java程式語(yǔ)言使用方法重載和方法重寫(xiě)來(lái)實(shí)現(xiàn)多態(tài)性。

• 在Java中的例外處理

• Java有一個(gè)稱(chēng)為異常處理的方法，用於處理程式執(zhí)行時(shí)發(fā)生的錯(cuò)誤。

每當(dāng)發(fā)生錯(cuò)誤時(shí)，會(huì)拋出一個(gè)叫做例外的物件；這個(gè)物件可以被程式收集和管理。

• 基本的Android程式設(shè)計(jì)概念

• 如果你想創(chuàng)建Android應(yīng)用程序，除了基本的Java概念，你還需要學(xué)習(xí)一些Android特定的理念。

• Activities, intentions, plans, and resources fall under this category.

• #An Android app's building pieces are called activities, and each activity corresponds to a single screen.

#Although layouts establish an activity's user interface, intentents are utilised to communicate amongst activities. The app's data, including text and graphics, are store in resources.##d in resources.

d in resources.##d in resources.##d in resources.##d in resources.##d in resources.##d in resources.##d in resources.##d in resources.

##結(jié)論

###In conclusion, mastery of the Java programming language is essential for creating Android apps. The fundamental Java ideas required for Android programming, such as object-oriented proesming, data types and variables, control obures, data types and variables, control obures, data 類(lèi)型、 , inheritance and polymorphism, and exception handling, have been covered in this article. We have also discussed some of the key Android-specific terms you should be familiar with, such as activities, intents, layouts, rewells. on your way to creating your own Android apps if you can master these ideas. It's crucial to remember that this post is just the beginning. Beyond the fundamentals of Java, there is a great amount of information to l

如果您真的想創(chuàng)建 Android 應(yīng)用程序，則必須不斷學(xué)習(xí)和嘗試新想法。開(kāi)發(fā)自己的專(zhuān)案是了解更多 Android 開(kāi)發(fā)知識(shí)的絕佳方法。您可以開(kāi)始使用各種網(wǎng)路資源，例如手冊(cè)、論壇和教學(xué)課程。為了提高您的知識(shí)，您可能還想考慮參加線(xiàn)上課程或參加附近的程式設(shè)計(jì)訓(xùn)練營(yíng)。

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