Android Tutorials - Herong's Tutorial Examples - v3.05, by Herong Yang
"dalvikvm" Command to Run Java Application
This section provides a tutorial example on how to use 'dalvikvm' command line tool to run a Java application on the Dalvik VM (Virtual Machine).
Since "dalvikvm" is a Java virtual machine, you can use it to run regular Java applications as shown in this tutorial:
1. Write a simple Java application called Hello.java:
class Hello {
public static void main(String[] a) {
System.out.println("Hello world!");
}
}
2. Compile the application with Java SE 6:
herong> "%java_home%/bin/java" -version java version "1.8.0_45" ... herong> "%java_home%/bin/javac" Hello.java
3. Convert .class file to .dex file:
herong> copy Hello.class \local\platform-tools
(dx.bat requires class files in the same folder as the command)
herong> dx.bat
--dex --output=Hello.dex Hello.class
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe)
or version (0034.0000)
at com.android.dx.cf.direct.DirectClassFile.parse0
(DirectClassFile.java:472)
...
4. Recompile with lower JDK version:
herong> "%java_home%/bin/javac" -target 1.7 -source 1.7 Hello.java warning: [options] bootstrap class path not set in conjunction with -source 1.7 1 warning
5. Convert .class file to .dex file:
herong> copy Hello.class \local\platform-tools herong> \local\platform-tools\dx.bat --dex --output=Hello.dex Hello.class
6. Copy .dex file to the Android system:
herong> adb push Hello.dex /sdcard/Download 4 KB/s (736 bytes in 0.167s)
7. Run the application with "dalvikvm":
herong> adb shell # cd /sdcard/Download cd /sdcard/Download # dalvikvm -cp Hello.dex Hello dalvikvm -cp Hello.dex Hello Hello world!
Very nice! This confirms that dalvikvm is just another JVM that can run Java applications.
Table of Contents
Installing JDK 1.8 on Windows System
Installation of Android SDK R24 and Emulator
Installing Apache Ant 1.9 on Windows System
Developing First Android Application - HelloAndroid
Android Application Package (APK) Files
Android Debug Bridge (adb) Tool
AboutAndroid - Application to Retrieve System Information
android.app.Activity Class and Activity Lifecycle
View Objects and Layout Resource Files
Using "adb logcat" Command for Debugging
Build Process and Package File Content
Bourne Shell Command Line Examples
Unix/Linux Command Line Programs
►"dalvikvm" Command to Run Java Application
Samsung Galaxy Tab 3 Mini Tablet
USB Debugging Applications on Samsung Tablet
USB Debugging Applications on LG-V905R Tablet