Program for RandomInputStream Class in Java

Program for RandomInputStream Class in Java

package com.elharo.io;

import java.util.*;
import java.io.*;

public class RandomInputStream extends InputStream {

private Random generator = new Random();
private boolean closed = false;

public int read() throws IOException {
checkOpen();
int result = generator.nextInt() % 256;
if (result < 0) result = -result;
return result;
}

public int read(byte[] data, int offset, int length) throws IOException {
checkOpen();
byte[] temp = new byte[length];
generator.nextBytes(temp);
System.arraycopy(temp, 0, data, offset, length);
return length;

}

public int read(byte[] data) throws IOException {
checkOpen();
generator.nextBytes(data);
return data.length;

}

public long skip(long bytesToSkip) throws IOException {
checkOpen();
// It's all random so skipping has no effect.
return bytesToSkip;
}

public void close() {
this.closed = true;
}

private void checkOpen() throws IOException {
if (closed) throw new IOException("Input stream closed");
}

public int available() {
// Limited only by available memory and the size of an array.
return Integer.MAX_VALUE;
}
}