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Objektorienteeritud programmeerimine (LTAT.03.003)

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Mis prinditakse välja?

try (

RandomAccessFile raf = new RandomAccessFile("fail.dat", "rw")

) {

raf.writeInt(16);

raf.writeDouble(2.2);

raf.writeInt(4);

raf.writeDouble(11.3);

raf.seek(16);

System.out.println(raf.readDouble());

}

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Ise loodud klassi isendit saab väljundvoogu kirjutada, kui klass realiseerib liidest

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Mitu baiti kirjutatakse faili?

try (

DataOutputStream dos = new DataOutputStream( new FileOutputStream("fail.bin"))

) {

dos.writeInt(1);

dos.writeDouble(35.72);

dos.writeInt(148);

dos.writeDouble(116898.72);

}

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Baidivoo lõputunnuseks on

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Mida teeb järgnev?

try (

OutputStream output = new FileOutputStream("fail.txt");

PrintStream printOut = new PrintStream(output)

){

System.setOut(printOut);

}

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Puhver ajutiselt salvestab ja säilitab andmeid enne nende sihtkohta saatmist.

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Baidivooga saab lugeda faili ridahaaval.

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Vali õige väide.

InputStream sisse = new FileInputStream("fail.txt");

OutputStream välja = new FileOutputStream("koopia.txt");

int c;

while ((c = sisse.read()) != -1) {

välja.write(c);

}

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Kõik vood ainult kannavad andmeid tootja ja tarbija vahel.

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Vali õiged väited.

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