Call R in java and save the running results of R to a txt file

方法一：
c.eval(“y<-eperson(economic);y”);
c.eval(“capture.output(y, file = \”mile.txt\”)”);
方法二：
c.eval(“y<-eperson(economic);y”);
c.eval(“sink(\”a.txt\”)”);
c.eval(“print(y)”);
c.eval(“sink()”);