Java tutorial
import java.io.FileOutputStream; import java.util.Formatter; public class Main { public static void main(String[] argv) throws Exception { Formatter fmtCon = new Formatter(System.out); Formatter fmtFile; fmtFile = new Formatter(new FileOutputStream("test.fmt")); fmtCon.format("a negative number: %(.2f\n\n", -123.34); fmtCon.format("%8s %8s\n", "Value", "Square"); for (int i = 1; i < 20; i++) fmtCon.format("%8d %8d\n", i, i * i); // write to the file. fmtFile.format("This is a negative number: %(.2f\n\n", -123.34); fmtFile.format("%8s %8s\n", "Value", "Square"); for (int i = 1; i < 20; i++) fmtFile.format("%8d %8d\n", i, i * i); fmtFile.close(); if (fmtFile.ioException() != null) { System.out.println("File I/O Error Occurred"); } } }