Read int from a file with buffer in Java
Description
The following code shows how to read int from a file with buffer.
You should always wrap your OutputStream with a BufferedOutputStream for better performance. The BufferedOutputStream class has two constructors that accept an OutputStream.
Example
//from w ww . j a va 2 s . c om
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;
public class Main {
public static void main(String[] arguments) {
try {
FileInputStream file = new FileInputStream("400primes.dat");
BufferedInputStream buff = new BufferedInputStream(file);
DataInputStream data = new DataInputStream(buff);
try {
while (true) {
int in = data.readInt();
System.out.print(in + " ");
}
} catch (EOFException eof) {
buff.close();
}
} catch (IOException e) {
System.out.println("Error - " + e.toString());
}
}
}
The code above generates the following result.
