Missing class files when compiling set of Java files using javac

Question

I am compiling a set of Java files using javac. With following command I save all Java files into a text file:

dir *.java /S /B > files.txt

Here a short extract of files.txt:

C:\Users\User\Desktop\source\org\apache\commons\lang3\AnnotationUtils.java
C:\Users\User\Desktop\source\org\apache\commons\lang3\ArchUtils.java
C:\Users\User\Desktop\source\org\apache\commons\lang3\ArrayUtils.java
C:\Users\User\Desktop\source\org\apache\commons\lang3\BitField.java
C:\Users\User\Desktop\source\org\apache\commons\lang3\BooleanUtils.java
C:\Users\User\Desktop\source\org\apache\commons\lang3\CharEncoding.java
...

Now that I have all my sources in one file I want to compile them with following command:

javac -encoding ISO-8859-1 -g -cp @files.txt

with the output...

Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

When I now switch to the sources folder I can see some of the compiled files but not all. For example the file AnnotationUtils.class is missing.

I am expecting to see for each Java file a class file plus class files for inner classes or at least an error message during compilation.

What causes this and how can I solve it?

I am using the sources of org.apache.commons.lang3
I tried compiling with:
- OpenJDK 11
- JDK 11
- JDK 8

Why are you trying to compile a maven project with a manually constructed build batch script, instead of using maven? — Elliott Frisch
– Elliott Frisch, Commented Aug 19, 2019 at 16:14
@ElliottFrisch Basically I am trying to compile source code with different JDK's and compiler options so that I can compare the resulting bytecode. — AndiCover
– AndiCover, Commented Aug 19, 2019 at 16:17

AndiCover · Accepted Answer · 2019-08-20 16:40:13Z

0

The problem is the -cp argument. It is used to add additional files to the classpath like jar files. I thought it would not make any difference when I use it all the time even if I do not specify any other files. Now I use it only if I really need it and it solved my problem. All expected files are there.

Though I am not sure why this does not compile all files.

answered Aug 20, 2019 at 16:40

AndiCover

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