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WriteBinary.java
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WriteBinary.java
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package lecture04.binaryexm;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class WriteBinary {
public static void main(String[] args) throws IOException {
FileOutputStream fos = new FileOutputStream("src/lecture04/binaryexm/sample.txt");
DataOutputStream dos = new DataOutputStream(fos);
dos.writeInt(125);
// write fixed string with len 15
byte[] fixed_name = new byte[15];
String name = "Ahmed";
writeFixedString(name, fixed_name, 15);
dos.write(fixed_name);
dos.writeDouble(4.5);
// Khalid
dos.writeInt(456);
name = "Khalid Ahmed Ali";
writeFixedString(name, fixed_name, 15);
dos.write(fixed_name);
dos.writeDouble(4.8);
// Saeed
dos.writeInt(798);
name = "Saeed";
writeFixedString(name, fixed_name, 15);
dos.write(fixed_name);
dos.writeDouble(4.3);
// Fahad
dos.writeInt(132);
name = "Fahad";
writeFixedString(name, fixed_name, 15);
dos.write(fixed_name);
dos.writeDouble(2.8);
dos.close();
}
private static void writeFixedString(String str, byte[] buff, int length) {
for (int i = 0; i < length; i++) {
if (str.length() <= i) {
buff[i] = 0;
} else {
buff[i] = (byte)str.charAt(i);
}
}
}
}