package randomAccess;

import java.io.*;

public class DataIO

{

public static String readFixedString(int size, DataInput in)

throws IOException

{

StringBuilder b = new StringBuilder(size);

int i = 0;

boolean more = true;

while (more && i < size)

{

char ch = in.readChar();

i++;

if (ch == 0) more = false;

else b.append(ch);

}

in.skipBytes(2 * (size - i));

return b.toString();

}

public static void writeFixedString(String s, int size, DataOutput out)

throws IOException

{

for (int i = 0; i < size; i++)

{

char ch = 0;

if (i < s.length()) ch = s.charAt(i);

out.writeChar(ch);

}

}

}