Why don't Data Input Stream work in Sololearn??

Question

I know I can use Scanner class to input data as an alternative but I am curious why don't Data Input Stream work here??

Answer 1

DataInputStream() works on sololearn, try this:

import java.io.*;
class DataInputStreamDemo {
public static void main(String args[]) throws IOException {
DataOutputStream out =
new DataOutputStream( new FileOutputStream("file.dat"));
DataInputStream in =
new DataInputStream( new FileInputStream( "file.dat"));

out.writeInt(123456);
int num = in.readInt();

System.out.println("data from input stream: " +num);
}
}

Answer 2

zemiak I mean it doesn't work for taking input from user as scanner does

Answer 3

Saksham Jain The Scanner is the Java equivalent of taking input from the shell.

Answer 4

I think you refer to Stdin?
This is because we don't have a shell, but a sandboxed environment, which prevents most intrusions through vulnerabilities

Answer 5

Loeschzwerg What's the difference in working of Scanner and Data Input Stream?