Generador de numeros pseudoaleatorios.

rand

import java.io.*;

public class rand
{
	public static void main(String[] args)
	{
        File a = new File("keyjv.dat");
        int largo = Integer.parseInt(args[0]);
        int renglon = Integer.parseInt(args[1]);
        int uno = 0, cero = 0,random;
        try
        {
            BufferedWriter bw = new BufferedWriter(new FileWriter(a));
            PrintWriter pw = new PrintWriter(bw);
            for(int i = 0; i < renglon; i++)
            {
            	for(int j = 0; j < largo; j++)
                {
                    random = (int)(Math.random()*2);
            		pw.write(random + "");
                    if(random == 1)
                        uno++;
                    else
                        cero++;
                }
            	pw.write("\n");
            }
            pw.write("Cero: "+cero+"\n");
            pw.write("Uno: "+uno+"\n");
            bw.close();
            pw.close();
        }
		catch(Exception e)
		{
			e.printStackTrace();
		}	
	}
}