I get jar file with library from NetBeans and i cant convert it to apk.
Converter ask JAD and JAR files.
I have one main jar and two more in lib folder.
You can't convert .jar file to .apk!
inside a jar file we have .class files but inside the .apk we have .dex files which .dex files can convert to .class and after that .java.
so you can see a jar file is one step behind the .apk file
Change the project(module) settings from library to application.
Related
when making jar file in java, how to make jar file in a different folder where other files are not located?
I have two folders f1&f2
in f1/ft1/ft2/ft3 I have the java code in f2/ft1 I have few csv fine files to be used in the java code, and I have to create jar in f2/ft2. how to do it?
Need a help.
Iam trying to edit the source of an apk.
I unpacked that apk using apktool then convert that "classes.dex" file into ".jar" using dex2jar and then open that .jar file in jd-gui to save all the sources now all the sources have saved in different different folders containing ".java" files.
Now my problem is that when ever I am trying to compile a single .java file using javac it's shows error: the specified module is not found. But that module is there in that same folder. I also tried eclipse but it shows that same error.
Is there any way to compile all that folders containing .java file back to "classes.dex" using one compilation command. Or is there any tools for compilation?
In the folder where all the .java files are that you want compiled, run javac *.java then java *.
How are .jars created?
I know that an IDE like Eclipse can create Bytecode (.class) from developed Sourcecode (.java). And it can under "Export" create an .jar.
And know i want to know: Is an .jar created:
direct from Sourcecode?
from Bytecode which was copied?
with a totally other technique?
Source code files (.java files) are compiled to bytecode by Java Compiler. Bytecode is then stored in .class files.
These files are then packed together using jar tool to create JAR (Java Archive) file. JAR file is a zip archive usually containing:
.class files,
jar manifest
application resources
You can read more about Jar files on oficial documentation: https://docs.oracle.com/javase/tutorial/deployment/jar/basicsindex.html
A .jar is just an archive of .class files along with associated resources (if any) and metadata (if any). In fact, "jar" means Java ARchive, and the file format is the same as .zip files. From the Oracle JAR file overview :
JAR consists of a zip archive, as defined by PKWARE, containing a manifest file and potentially signature files, as defined in the JAR File Specification.
So source code is compiled to .class files (bytecode) which is then wrapped up in a .jar archive via the jar tool (or anything else that can correctly create .jar files per the spec).
This question already has answers here:
How do I make a JAR from a .java file?
(8 answers)
Closed 6 years ago.
I just have some (134) .java source files with me and I'm pretty sure that contains all the necessary code!
I want some quick tutorial to compile this program into a .jar file.
(I'm on a windows platform btw)
I have tried javac and jar commands. I got my .jar file but it's not opening!!!
Thanks in advance!
Best practice is to make use of Ant/Maven/Gradle kind of build program tools that can take care of creating Jar files.
Other way is to just make use of Eclipse's feature for exporting the project as a light weight Jar file or Runnable Jar file(which includes dependencies).
Place all the files you want to include in the JAR file inside a
single folder.
Open the command prompt in Admin Mode
Navigate to the folder where you stored your files.
Set the path to the directory of the JDK bin. You will need to run
the jar.exe utility to create a JAR file, and that file is located
in the bin directory.
Create the JAR file.
The format of the command line for creating the
JAR file looks like this: jar cf 'jar-file'.jar input-file(s)
You can use WINRAR.
right click on file (put inside all your .java files) and compile by using winrar;
choose format .zip (important)
and save filename.jar (important)
How can I edit code in a .class file in a .jar file using Android Studio? I have already tried to edit it of course. The class I am trying to edit is a read only for some reason.
Jar files are compressed archives (zipped files) of .class files( and few other resources). .class files are compiled .java files. You can not edit a compiled file in normal situation unless you decompile to get source code, edit the code and recompile again.
Decompiling is a tedious process, thus getting a source code is the best option here.
Note: You can rename the .jar file to a .zip file and can open it using any compression tool such as winrar or winzip to see the content.