What do you mean by JVM? Are JVM and DVM same? Explain the process how to generate an apk. OR What is Activity? What are the states used by an Activity? Write down steps to create... What do you mean by JVM? Are JVM and DVM same? Explain the process how to generate an apk. OR What is Activity? What are the states used by an Activity? Write down steps to create an Android project.
Understand the Problem
The question is asking for explanations of concepts related to Android programming, such as JVM, APK generation, variables, activity lifecycle, and various Android components. It also requests code examples and clarification on specific terms.
Answer
JVM runs Java apps, DVM is Android-specific. They differ. APKs are built by compiling, packaging, and signing. Activities are UI components in Android with lifecycle states. Use Android Studio to create projects.
The Java Virtual Machine (JVM) runs Java applications by converting bytecode into machine-specific instructions. The Dalvik Virtual Machine (DVM) is optimized for Android and converts code into executables suitable for mobile devices. They are not the same. To generate an APK, you compile Android code, including resources, into DEX format, package it with additional files, and sign the APK. An Activity represents a single screen in an Android app. It goes through states like Created, Started, Resumed, Paused, Stopped, and Destroyed. To create an Android project, use Android Studio, start a new project, configure settings, and build your application.
Answer for screen readers
The Java Virtual Machine (JVM) runs Java applications by converting bytecode into machine-specific instructions. The Dalvik Virtual Machine (DVM) is optimized for Android and converts code into executables suitable for mobile devices. They are not the same. To generate an APK, you compile Android code, including resources, into DEX format, package it with additional files, and sign the APK. An Activity represents a single screen in an Android app. It goes through states like Created, Started, Resumed, Paused, Stopped, and Destroyed. To create an Android project, use Android Studio, start a new project, configure settings, and build your application.
More Information
JVM is widely used for cross-platform support in Java. DVM was replaced by ART (Android Runtime) in later Android versions for better performance. Activities are central to Android apps, managing interactions and interface.
Tips
Avoid confusing JVM with DVM; they serve different purposes. Ensure all activity lifecycle methods are properly implemented for handling performance and resource management in Android apps.
Sources
- Difference Between JVM and DVM - GeeksforGeeks - geeksforgeeks.org
- Android runtime and Dalvik | Android Open Source Project - source.android.com
- What is DVM(Dalvik Virtual Machine)? - GeeksforGeeks - geeksforgeeks.org
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