第三題
import java.io.FileInputStream;import java.io.DataInputStream;import java.io.InputStreamReader;import java.io.BufferedReader;import java.io.IOException;import java.io.PrintStream;import java.io.FileOutputStream;class StringFileIO {public static void main (String args[]) {String thisLine;//Loop across the arguments for (int i=0; i < args.length; i++) {//Open the file for reading try { FileInputStream fin = new FileInputStream(args[i]); FileOutputStream fout = new FileOutputStream("outdata.txt");// now turn the FileInputStream into a DataInputStream try { // DataInputStream myInput = new DataInputStream(fin); BufferedReader myInput = new BufferedReader(new InputStreamReader(fin)); PrintStream myOutput = new PrintStream(fout);try { while ((thisLine = myInput.readLine()) != null) { System.out.println(thisLine); myOutput.println(thisLine);} // while loop ends here } catch (Exception e) { System.err.println("Error: " + e); } } // end try catch (Exception e) { System.err.println("Error: " + e); }} // end try catch (Exception e) { System.err.println("failed to open file " + args[i]); System.err.println("Error: " + e); } } // for end here} // main ends here}
