ShowFile
2015-10-27 11:14
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/** * Use a FileReader to display a text file. * * To use this program, specify the name * of the file that you want to see. * For example, to see a file called Test.txt, * use the following command line: * * java ShowFile Test.txt * */ package FileIO; import java.io.*; /** * @author Administrator * */ public class ShowFile { /** * @param args */ public static void main(String[] args) { FileReader fr; // First make sure that a file has been specified. if (1 != args.length) { System.out.println("Usage: ShowFile file"); return ; } try { // Open the file. fr = new FileReader(args[0]); } catch (FileNotFoundException exc) { System.out.println("File Not Found"); return ; } // At this point, the file is open and // its contents can be read. try { int ch; // Read the file one character at a time. do { ch = fr.read(); if (-1 != ch) System.out.print((char)ch); } while (-1 != ch); } catch (IOException exc) { System.out.println("Error Reading File"); } try { fr.close(); } catch (IOException exc) { System.out.println("Error Closing File"); } } }
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