how to copy java compiler errors to a file in windows

Question

I am using windows command prompt to compile a Java code. I want to send the compiler error stacktrace to my friend. Is there a way to copy the compiler stacktrace to a file.

I tried

• javac helloworld.java > file.txt to copy to a file and
• javac helloworld.java | clip to direct the output to clipboard

Answer 1

You can redirect command output into files with >

javac helloworld.java > file.txt 2>&1

2>&1 redirects stderr (2) to stdout (1) and both get redirected to file.txt.

Note that you can also use >> instead of > to append content if you do not want to overwrite the file for every run of the command.