Typical applications of Java IO streams

Although there are a large number of Io stream classes in the library, they can be grouped together in many different ways, but there are actually only a few ways to use them frequently. However, care must be given to get the right combination. The following fairly lengthy example shows the creation and use of a typical IO configuration, which can be used as a reference when writing your own code. Note that each configuration begins with a numbered annotation and provides appropriate explanatory information.
 

: Iostreamdemo.java//Typical IO Stream configurations import java.io.*;

Import com.bruceeckel.tools.*; public class Iostreamdemo {public static void main (string[] args) {try {//1.
            Buffered input file DataInputStream in = new DataInputStream (New Bufferedinputstream (
      New FileInputStream (Args[0]));
      string s, s2 = new string ();
      while (s = in.readline ())!= null) s2 + = + + "\ n";

      In.close (); 2.
      Input from memory StringBufferInputStream in2 = new StringBufferInputStream (s2);
      int C;

      while ((c = in2.read ())!=-1) System.out.print ((char) c); 3. Formatted memory input try {datainputstream in3 = new DataInputStream (New Stringbuff
        Erinputstream (S2));
      while (true) System.out.print ((char) in3.readbyte ());
      catch (Eofexception e) {System.out.println ("End of Stream encountered"); }

      4.
            Line numbering & file output try {linenumberinputstream li = new Linenumberinputstream (
        New StringBufferInputStream (S2));
        DataInputStream in4 = new DataInputStream (LI);
                PrintStream out1 = new PrintStream (new Bufferedoutputstream, New FileOutputStream (
        "Iodemo.out"));
        while (s = in4.readline ())!= null) out1.println ("line" + li.getlinenumber () + s); Out1.close ();
      Finalize () not reliable!
      catch (Eofexception e) {System.out.println ("End of Stream encountered"); }//5. Storing & Recovering data try {dataoutputstream out2 = new DataOutputStream (new
        Bufferedoutputstream (New FileOutputStream ("Data.txt"));
        Out2.writebytes ("Here's The value of pi: \ n");
        Out2.writedouble (3.14159); out2.clOSE (); DataInputStream in5 = new DataInputStream (new Bufferedinputstream (New Fileinputstrea
        M ("Data.txt"));
        System.out.println (In5.readline ());
      System.out.println (In5.readdouble ());
      catch (Eofexception e) {System.out.println ("End of Stream encountered"); }//6.
      reading/writing Random access files Randomaccessfile RF = new Randomaccessfile ("Rtest.dat", "RW");
      for (int i = 0; i < i++) rf.writedouble (i*1.414);

      Rf.close ();
      RF = new Randomaccessfile ("Rtest.dat", "RW");
      Rf.seek (5*8);
      Rf.writedouble (47.0001);

      Rf.close ();
      RF = new Randomaccessfile ("Rtest.dat", "R");
      for (int i = 0; i < i++) System.out.println ("Value" + i + ":" + rf.readdouble ());

      Rf.close (); 7.
      File input Shorthand InFile in6 = new InFile (args[0)); String s3 = new String ();
        System.out.println ("in file:" + in6.readline ());

      In6.close (); 8.
      Formatted file output shorthand printfile out3 = new Printfile ("Data2.txt");
      Out3.print ("Test of Printfile");

      Out3.close (); 9.
      Data file output shorthand outfile Out4 = new OutFile ("Data3.txt");
      Out4.writebytes ("Test of outdatafile\n\r");
      Out4.writechars ("Test of outdatafile\n\r");

    Out4.close ();
    catch (FileNotFoundException e) {System.out.println ("File not Found: + args[0]);"
    catch (IOException e) {System.out.println ("IO Exception"); }
  }
} ///:~