Serious!! can not see the info.

[yudalang3]

Where is the error message in rJava package: This is my java code:

public String launch() throws Exception {

// Launcher.main(null);
// Launcher4Dev.main(null);

	System.err.println("Error:" + new File("").getAbsolutePath());
	System.out.println("Output:" + new File("").getAbsolutePath());

	new InputMismatchException("fejfoejfwef").printStackTrace();

	return "Hello this is eGPS for R!";
}

But I run it in the R:

setLib_and_launchJVM();
tryCatch(
expr = {
instance <- .jnew(launchClass)
words <- .jcall(obj = instance, returnSig = "S", method = "launch")
cat('The words of eGPS Java is: ', words, '\n');

}
,
Exception = function(e) {
  e$printStackTrace()
}

)
I can not see any error messages????

[s-u]

Since you cross-posted - see #335

[yudalang3]

I also give some solutions for using R in Rstuido:

    temp.out <- tempfile(fileext = ".txt")
    on.exit(unlink(temp.out))
    jSys <- rJava::J("java/lang/System")
    jOrigOut <- jSys$out
    jSys$setOut(rJava::.jnew("java/io/PrintStream", temp.out))
    bioinfojavautils$go(rJava::.jarray(strsplit(cmd, "\\s+")[[1]]))
    jSys$setOut(jOrigOut)

This is a way