Where to put the code

[jael]

I HAVE A PROGRAM HERE THAT COMPUTES FOR I/O UTILIZATION. THERE'S ONLY ONE PROBLEM, I CANT SEEM TO FIND THE RIGHT PLACE TO PUT THESE CODE:

CPU=(mss/(ms+mss+msss))* 100;
JOptionPane.sho wMessageDialog( null, "CPU Utlization:"+CP U+"%");

AS YOU CAN SEE I PLACED THE CODE ON THE LAST PART BUT WHEN I COMPILE THERE'S AN ERROR SAYING
"variable ms might not have been initialized"

BUT I ALREADY DID INITIALIZE VARIABLE ms.

PLEASE LET ME KNOW WHERE TO PUT THE CODE SO THAT THE PROGRAM CAN FUNCTION RIGHT. THANKS

import javax. swing.*;

public class CaseStudy{
public static void main(String[]args){
double ms, mss, msss, mssss, CPU; int input,charc,uni t,unit1,unit2,u nit3,unit4,card ,output,lines,i nst;
double sec=.010;

{

//INPUT PHASE
input=Integer.p arseInt(JOption Pane.showInputD ialog("Choose Input Device: \n (1)Keyboard \n (2)Cardreader") );
{

if (input==1){
charc=Integer.p arseInt(JOption Pane.showInputD ialog("How Many Characters?"));
unit=Integer.pa rseInt(JOptionP ane.showInputDi alog("Number Of Characters:"+ch arc+"\n In What Unit Of Time?\n(1)Micro second \n(2)Millisecon d\n(3)Second \n(4)Minute"));
if (unit==1)
mssss=(sec/charc);
else if (unit==2)
mssss=(1/charc);
else if (unit==3)
mssss=(1000/charc);
else
mssss=(60000/charc);

JOptionPane.sho wMessageDialog( null, "Input Phase:"+mssss+" ms");}

else{
card=Integer.pa rseInt(JOptionP ane.showInputDi alog("How Many Cards?"));
unit2=Integer.p arseInt(JOption Pane.showInputD ialog("Number Of Characters:"+ca rd+"\n In What Unit Of Time?\n(1)Micro second \n(2)Millisecon d\n(3)Second \n(4)Minute"));
if (unit2==1)
ms=(sec/card);
else if (unit2==2)
ms=(1/card);
else if (unit2==3)
ms=(1000/card);
else
ms=(60000/card);
JOptionPane.sho wMessageDialog( null, "Input Phase:"+ms+"ms" );}}


//OUTPUT PHASE
output=Integer. parseInt(JOptio nPane.showInput Dialog("Choose Printer: (1)Laser (2)DotMatrix")) ;
{if (input==1){
lines=Integer.p arseInt(JOption Pane.showInputD ialog("How Many Lines?"));
unit3=Integer.p arseInt(JOption Pane.showInputD ialog("Number Of Lines:"+lines+" \n In What Unit Of Time?\n(1)Micro second \n(2)Millisecon d\n(3)Second \n(4)Minute"));
if (unit3==1)
msss=(sec/lines);
else if (unit3==2)
msss=(1/lines);
else if (unit3==3)
msss=(1000/lines);
else
msss=(60000/lines);
JOptionPane.sho wMessageDialog( null, "Output Phase:"+msss+"m s");}
else{
lines=Integer.p arseInt(JOption Pane.showInputD ialog("How Many Lines?"));
unit3=Integer.p arseInt(JOption Pane.showInputD ialog("Number Of Lines:"+lines+" \n In What Unit Of Time?\n(1)Micro second \n(2)Millisecon d\n(3)Second \n(4)Minute"));
if (unit3==1)
msss=(sec/lines);
else if (unit3==2)
msss=(1/lines);
else if (unit3==3)
msss=(1000/lines);
else
msss=(60000/lines);
JOptionPane.sho wMessageDialog( null, "Output Phase:"+msss+"m s");}}

//PROCESS PHASE
inst=Integer.pa rseInt(JOptionP ane.showInputDi alog("How Many Instructions?") );
unit4=Integer.p arseInt(JOption Pane.showInputD ialog("Instruct ions:"+inst+"\n In What Unit Of Time?\n(1)Micro second \n(2)Millisecon d\n(3)Second \n(4)Minute"));
{if (unit4==1)
mss=(inst/1000);
else if (unit4==2)
mss=(inst/1);
else if (unit4==3)
mss=(inst/sec);
else
mss=(inst/60000);
JOptionPane.sho wMessageDialog( null, "Process Phase:"+mss+"ms ");
//CPU Utilization
CPU=(mss/(ms+mss+msss))* 100;
JOptionPane.sho wMessageDialog( null, "CPU Utlization:"+CP U+"%");}


}}}}

[pbrockway2]

Please consider posting again using standard capitalisation and code tags. As it is your post is unreadable.

The compiler won't lie: if it says ms might not have been initialised then it might not have been initialised. Whatever line you thought was initialising this variable didn't have the effect you itended.

To see why, write the code so that it's a little clearer what's happening. Use braces for every if or else block. Line closing braces up with the start of their block. And break the long method up into smaller methods with distinct functionality.