Try to modify the program in various data and by running, debugging, comparing the data type in the values in the memory and storage in the hard disk file form, the results in the form of a two-dimensional table, contrast and illustration,

Import the Java. IO. *;


Public class DataIO {

Public static void main (String [] args) throws IOException {

DataOutputStream out=

New DataOutputStream (

New BufferedOutputStream (

New FileOutputStream (" c: \ \ data. TXT ")));

Out. WriteBoolean (false);

Out. WriteChar (' c ');

Out. WriteByte (1);

Out. WriteShort (2);

Out. WriteInt (3);

Out. WriteLong (4 l);

Out. WriteFloat (5.0 f);

Out. WriteDouble (6.0);

Out. WriteUTF (" hello world!" );

out.close();


A DataInputStream in=new a DataInputStream (

New BufferedInputStream (new FileInputStream (" c:/data. TXT ")));

System. Out.println (in readBoolean () + ";" + in the readChar () + ";" );

System. Out.println (in readByte () + ";" + in readShort () + ";" );

System. Out.println (+ in readInt () + ";" + in readLong ());

System. Out.println (in readFloat () + ";" + in the readDouble () + ";" );

System. The out. Println (in readUTF ()); In the close ();

}

}

CodePudding user response:

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