Java程序实现捕获控制台输出的程序

import java.io.*;

public class test{

public static void main(String []args)throws Exception{

File f=new File("outfile.txt");
f.createNewFile();
FileOutputStream fileOutputStream = new FileOutputStream(f);
PrintStream printStream = new PrintStream(fileOutputStream);
System.setOut(printStream);

for(int i=0;i<=10000;i++){

System.out.println("do something....");
}

}

}