Java.IO #1

import java.io.*;
import java.util.Random;
import java.util.StringTokenizer;


public class MainIO {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        try {
            //1. feladat
            FileInputStream TestExample = new FileInputStream("d:/zimmgy/IOex1.txt");
            FileOutputStream TestExampleCopy = new FileOutputStream("d:/zimmgy/IOex11.txt");

            int c;
            while ((c = TestExample.read()) != -1){
                TestExampleCopy.write(c);
            }

            TestExample.close();
            FileInputStream TestExample2 = new FileInputStream("d:/zimmgy/IOex1.txt");
            FileOutputStream TestExampleCopy2 = new FileOutputStream("d:/zimmgy/IOex12.txt");

            byte[] buf = new byte[10];
            while ((c =TestExample2.read(buf)) == buf.length){
                TestExampleCopy2.write(buf);
            }
            TestExampleCopy2.write(buf, 0, c);

            FileInputStream TestExample3 = new FileInputStream("d:/zimmgy/IOex1.txt");
            FileOutputStream TestExampleCopy3 = new FileOutputStream("d:/zimmgy/IOex13.txt");
            byte[] fullbuf = new byte[TestExample3.available()];
            TestExample3.read(fullbuf);
            TestExampleCopy3.write(fullbuf);


            //2. feladat
            FileInputStream TestExample21 = new FileInputStream("d:/zimmgy/IOex2.txt");
            byte[] recordbuf = new byte[512];
            TestExample21.skip(512);
            while ((c =TestExample21.read(recordbuf)) == recordbuf.length){
                System.out.println(new String(recordbuf));
            }
            System.out.println(new String(recordbuf, 0, c));

            //3. feladat
            FileInputStream TestExample31 = new FileInputStream("d:/zimmgy/IOex3.txt");
            System.out.println("Fájlméret: " + TestExample31.available());
            byte[] buffor3 = new byte[TestExample31.available()/4];
            TestExample31.read(buffor3);
            System.out.println(new String(buffor3));
            System.out.println("Hátravan: " + TestExample31.available());
            byte[] buffor32 = new byte[buffor3.length/2];
            System.out.println(new String(buffor32));
            TestExample31.skip(buffor3.length);
            c =TestExample31.read(buffor3);
            System.out.println(new String(buffor3, 0, c));

            //6. feladat
            int[] Szvatopluk = new int[10];
            DataOutputStream TestExample61 = new DataOutputStream (new FileOutputStream ("d:/zimmgy/IOex6.bin"));
            Random R = new Random();
            for (int i =0; i<10; i++){
                Szvatopluk[i] = R.nextInt();
                TestExample61.writeInt(Szvatopluk[i]);
                System.out.println(Szvatopluk[i]);
            }
            System.out.println();
            TestExample61.close();
            DataInputStream TestExample62 = new DataInputStream (new FileInputStream ("d:/zimmgy/IOex6.bin"));
            for (int i =0; i<10; i++){
                System.out.println(TestExample62.readInt());
            }

            //soronkénti olvasás
            BufferedReader TestExampleAdded11 = new BufferedReader (new FileReader ("d:/zimmgy/IOex1.txt"));
            String bufforAdded1;
            int WordCount =0, LineCount=0;
            while((bufforAdded1 = TestExampleAdded11.readLine()) != null){
                System.out.println(bufforAdded1);
                LineCount++;
                StringTokenizer st = new StringTokenizer (bufforAdded1);
                WordCount += st.countTokens();
            }

            System.out.println("Szavak száma: " + WordCount + ", sorok száma : " + LineCount);

        } catch (Exception e) {
            try {
                @SuppressWarnings("unused")
                FileOutputStream BackupTest = new FileOutputStream("d:/zimmgy/IOex1.txt");
                @SuppressWarnings("unused")
                FileInputStream TestExample = new FileInputStream("d:/zimmgy/IOex1.txt");
            }
            catch (Exception f){
                System.out.println ("Java is a haywire!");
            }
        }

    }

}