java exception errors

tw0nk

Hi everyone, i cant figure out these exception errors im getting, the errors are :

C:\Everything\projects\voting\screenprintfile.java:41: cannot resolve symbol
symbol : variable in
location: class screenprintfile
while((s = in.readLine())!= null)
^
C:\Everything\projects\voting\screenprintfile.java:62: cannot resolve symbol
symbol : variable in
location: class screenprintfile
in.close();
^
2 errors

Process completed.
*************************************************

the code im using is :

import java.io.*;

public class screenprintfile {


static String [][] cinfo = new String[1000][1000];

public static void main(String[] args)
throws IOException {

/////////////////PROGRAM ORDER////////////////////////
putCandidArray();
printStuff();
////////////////////////////////////////////////////////



}

///////////////////GET FILE AND PUT IN ARRAY///////////////////////
static void putCandidArray() {
try{
BufferedReader in =
new BufferedReader(
new FileReader("c:\\everything\\projects\\voting\\vote1.dat"));
}
catch(Exception e) {
System.err.println("Caught an exception");
}

String s, s2 = new String();

String cand = new String();
String temp = new String();
boolean cfound;
cfound=false;

int x=0;
//start of code
//read everything from file
while((s = in.readLine())!= null)
{

s2 += s + "\n";
//end of read everything- s2 contains all of file

//locate candidates
if (s.equals("<CAND>"))
{
cfound=true;
continue;
}
if( s.equals("</CAND>"))
cfound=false;

if(cfound == true)
{
cand+=s + "\n";
cinfo[1][x]=s;
x++;
}
in.close();
}
}
/////////////////////////////////////////////////////////////


///////////////PRINT STUFF//////////////////////////////
static void printStuff(){
//System.out.println(x);
System.out.println(cinfo[1][3]);
System.out.println("\n");
}


//////////////////////////////////////////////////////


}

Martyr

Try: while((s = System.in.readLine())!= null)
Same for other line.
Try: System.in.close();

Zab

You declared in inside a try block, so it goes out of scope at the end of the try block.

You could put the declaration outside of the try block, like

BufferedReader in = null;
try
{
  in = blah;
}
catch(blah)
{
}

On the other hand, you seem to be missing the point of the exception being thrown. If an exception is thrown when you are opening the file, you CANNOT continue, as... well, the file isn't open, is it? So, the whole method should probably be in the try block, and you should be throwing an exception so that users of putCandidArray know that something has gone wrong.

Zab.

Karoma

far too early for this ****.

public class screenprintfile {
static BufferedReader in; // so it can be seen elsewhere throughout!

___________________________________________

Also,you must use try catch whenever using the file:

try
{
while((s = in.readLine())!= null)

......

}
catch(IOException dumb)
{
System.err.println("Caught an IO exception");
}

and so on...

Karoma

/*
* should look something like this is the end.
*/


import java.io.*;

public class screenprintfile {

static BufferedReader in;

static String [][] cinfo = new String[1000][1000];

public static void main(String[] args) throws IOException
{

/////////////////PROGRAM ORDER////////////////////////
putCandidArray();
printStuff();
////////////////////////////////////////////////////////


}

///////////////////GET FILE AND PUT IN ARRAY///////////////////////
static void putCandidArray() {
try{
BufferedReader in =
new BufferedReader(
new FileReader("c:\\everything\\projects\\voting\\vote1.dat"));
}
catch(IOException e) {
System.err.println("Caught an exception");
}

String s, s2 = new String();

String cand = new String();
String temp = new String();
boolean cfound;
cfound=false;

int x=0;
//start of code
//read everything from file
try
{
while((s = in.readLine())!= null)
{

s2 += s + "\n";
//end of read everything- s2 contains all of file

//locate candidates
if (s.equals("<CAND>"))
{
cfound=true;
continue;
}
if( s.equals("</CAND>"))
cfound=false;

if(cfound == true)
{
cand+=s + "\n";
cinfo[1][x]=s;
x++;
}
in.close();
}
}
catch(IOException e)
{
System.err.println("Caught an exception");
}

}
/////////////////////////////////////////////////////////////


///////////////PRINT STUFF//////////////////////////////
static void printStuff(){
//System.out.println(x);
System.out.println(cinfo[1][3]);
System.out.println("\n");
}


//////////////////////////////////////////////////////


}

tw0nk

thanks folks, everything working smoothly now! phewww