Java - ayuende a resolver mis ejercicios netbeans PORFAVOR.

public static void main(String[] args) throws Exception

{

    BufferedReader teclado;

    teclado = new BufferedReader (new InputStreamReader(System.in));

    int  num1,num2,x,pro;

    System.out.print("Numero 1=> ");

    num1 = Integer.parseInt(teclado.readLine());

    System.out.print("Numero 2=> ");

    num2 = Integer.parseInt(teclado.readLine());

    pro=0;

    x=1;

    while (x<=num1)

    {

        pro =pro+num2;

        x = x + 1;

    }

    System.out.println("El producto es " +pro);

}

public static void main(String[] args) throws Exception

{

    int  num1,s;

    BufferedReader teclado;

    teclado = new BufferedReader (new InputStreamReader(System.in));

    s=0;

    do{

        System.out.print("Numero => ");

        num1 = Integer.parseInt(teclado.readLine());

        if(num1!=-1)  s=s+num1;

    }

    while (num1!=-1);

    System.out.println("La suma es " +s);

}