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The first method is to tell Eclipse to save console output to a file. For that, go to Run → Debug Configurations on Eclipse menu. Then under Standard Input and Output section, click on checkbox next to File: , and choose the name of output file to use.
If you create a PrintStream connected to a ByteArrayOutputStream , then you can capture the output as a String . Example: // Create a stream to hold the output ByteArrayOutputStream baos = new ByteArrayOutputStream(); PrintStream ps = new PrintStream(baos); // IMPORTANT: Save the old System. out!
Instantiate a PrintStream class by passing the above created File object as a parameter. Invoke the out() method of the System class, pass the PrintStream object to it. Finally, print data using the println() method, and it will be redirected to the file represented by the File object created in the first step.
Go to run as and choose Run Configurations -> Common and in the Standard Input and Output you can choose a File also.
You could use a "variable" inside the output filename, for example:
/tmp/FetchBlock-${current_date}.txt
current_date:
Returns the current system time formatted as yyyyMMdd_HHmm. An optional argument can be used to provide alternative formatting. The argument must be valid pattern for java.util.SimpleDateFormat.
Or you can also use a system_property or an env_var to specify something dynamic (either one needs to be specified as arguments)
You can set the output of System.out programmatically by doing:
System.setOut(new PrintStream(new BufferedOutputStream(new FileOutputStream("/location/to/console.out")), true));
Edit:
Due to the fact that this solution is based on a PrintStream, we can enable autoFlush, but according to the docs:
autoFlush - A boolean; if true, the output buffer will be flushed whenever a byte array is written, one of the println methods is invoked, or a newline character or byte ('\n') is written
So if a new line isn't written, remember to System.out.flush() manually.
(Thanks Robert Tupelo-Schneck)
To solve the problem I use ${string_prompt} variable. It shows a input dialog when application runs. I can set the date/time manually at that dialog.
Move cursor at the end of file path.
Click variables and select string_prompt
Select Apply and Run
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