OO programing and other help......

Question

I got the following done. It is very nearly finished. Apart from a few error. ( Which i can't find out why so if you figure it out please be so kind to tell me. )
I think you could see my idea and what i intend to do in this program. But it is my first long program so if i did something abnormal and idea how to improve it please tell me as well.
Something concern me is that it is not very OO. And the only reason i spend so much time trying to learn Java is because i can't get my head around OO programing. Although finally i manged to find a book to make me understand it. But doing it myself and using OO in pratice is much harder than i thought. ( As you can see in my code is very procedual ). So any comment on that issue is well come.
import parport.ParallelPort;
class Pio {
public static void main ( String []args )
     int init = 0;
     int input;
     int readin = 0;
     long start;
     long end;
     long elapsed;
     ParallelPort PPno1 = new ParallelPort(0x378);
     // 0x378 is normally the base address for the LPT1 port
     ParallelPort.writeOneByte(0x378, init);
     // Init DATA register
          System.out.println("Please Enter Relay 1 or 2 you would like to test" +input );
          for ( input /= 1 && input /= 2 );
          System.out.println("Please Enter either 1 or 2 as input paramteter");
          if ( input = 1 ){
               start = System.currentTimeMillis();
               init = init | 0x04; // set D1 (second bit from right to left)
               ParallelPort.writeOneByte(0x378, init); // update DATA register
          }else // if input is not 1 input must be 2
               start = System.currentTimeMillis();
               init = init | 0x08; // set D1 (second bit from right to left)
               ParallelPort.writeOneByte(0x378, init); // update DATA register
          readin = PPno1.read();
          if (readin > 0){
               end = System.currentTimeMillis();
     elapsed = end - start; //ms
     System.out.println("The total time it took relay to start" + elapsed);
( All part using class parallel port are working. As i have tested them seperately. )

Answer 1

Thanks. But may be i should concentrate on getting it works first. Because it is way far off finish then i have imagined................
I got the following, after you point out Input does not work as i have completely forgotten about it.
import java.io.*;
import parport.ParallelPort;
class Pio {
public static void main ( String []args )
     int init = 0;
     String input;
     int readin = 0;
     long start;
     long end;
     long elapsed;
     ParallelPort PPno1 = new ParallelPort(0x378);
     // 0x378 is normally the base address for the LPT1 port
     ParallelPort.writeOneByte(0x378, init);
     // Init DATA register
          System.out.println("Please Enter Relay 1 or 2 you would like to test" );
          // User input
          BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
          String text = in.readLine();
          // Reading User input in STRING!!!! ( caution )
          input = Integer.parseInt(text);//converting string to int
          //inorder while to compare
          for ( input != 1 && input != 2 ){
          System.out.println("Please Enter either 1 or 2 as input paramteter");
          BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
          input = in.readLine();
          if ( input = 1 ){
               start = System.currentTimeMillis();
               init = init | 0x04; // set D1 (second bit from right to left)
               ParallelPort.writeOneByte(0x378, init); // update DATA register
          }else // if input is not 1 input must be 2
               start = System.currentTimeMillis();
               init = init | 0x08; // set D1 (second bit from right to left)
               ParallelPort.writeOneByte(0x378, init); // update DATA register
          readin = PPno1.read();
          if (readin > 0){
               end = System.currentTimeMillis();
     elapsed = end - start; //ms
     System.out.println("The total time it took relay to start" + elapsed);
When i compile i got the following error.
D:\Downloads\UserPort\UserPort\pio.java:27: incompatible types
found : int
required: java.lang.String
input = Integer.parseInt(text);//converting string to int
^
D:\Downloads\UserPort\UserPort\pio.java:30: operator != cannot be applied to java.lang.String,int
while ( input != 1 && input != 2 ){
^
D:\Downloads\UserPort\UserPort\pio.java:30: operator != cannot be applied to java.lang.String,int
while ( input != 1 && input != 2 ){
^
D:\Downloads\UserPort\UserPort\pio.java:33: in is already defined in main(java.lang.String[])
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
^
D:\Downloads\UserPort\UserPort\pio.java:37: incompatible types
found : java.lang.String
required: boolean
if ( input = 1 ){
But all these error wasn't there before i add the User input in........ which is very very confusing sincei spend the whole day trying to get it to work and i still couldn't............. May be that is why programmer are worth so much money these day................................