How to redirect jar output from ubuntu command prompt to text file

Question

I created jar file and I run it using command as follows:

$ java -jar niidle.jar arguments...

it is showing correct output. But I cant see the whole output. I want to see the whole output. so how to redirect this whole thing to text file, when I run following command:

$ java -jar niidle.jar arguments...

Answer 1

This should do !!

java -jar class.jar 2>> log.txt

Answer 2

jar -jar niidle.jar arguments > output

Answer 3

If you do not need to save the output for future reference, you can read the full output this way:

java -jar niidle.jar arguments | less

Obviously, we are supposing that there is no user interaction. Otherwise you can do something like the following example to save the output and review it later.

java -jar niidle.jar arguments | tee output
... some user interaction ...
less output

Answer 4

要将错误日志保存在一个文件中，而普通控制台日志则保存在另一个文件中：

java -jar niidle.jar arguments 2> errorOutput.log > output.log