[javalava]

Hi!
I was wondering if somone could help me with my java program. I am getting some errors and dont know how to fix them. The program is not finished yet, so the end bit may no make sense! im still working on it.

public static void main(String[] args) {
String file;
Scanner scan = new Scanner (System.in);
System.out.println("Enter file names : ");
while(scan.hasNextLine()); {
file = scan.nextLine(); }
if (file.endsWith(.txt));
System.out.println("Text File: " + file);
if (file.contains(del));
System.out.println("Delete: " + file);
if (file.contains(del)&& (file.endsWith(.txt));

System.out.println("Text File: " + file); }
if (while(file.contains("blank line tp end"))) == true));
}

[sepala]

Reasons for "Illegal Start Of Type" exception

1. contains() method of String accepts CharacterSequence. But what you have passed is a variable.
So, it should be something like this > file.contains("sa");

2. endsWith() method of String accepts "String" as a parameter. What you have passed is a variable.
So it should be > file.endsWith(".txt")

Do the same for the next few similar errors.



Reason for Empty while Statement

1. You have closed the while loop before the condition. So, remove the semicolon and replace it to correct position


Other Errors

Have a look at this code snippet

if (file.contains(del)&& (file.endsWith(.txt));

Apart from the mistakes I ahve mentioned, you have forgotten to close the brackets properly. It should be

if (file.contains("del"))&& (file.endsWith(".txt"));

This code

if (while(file.contains("blank line tp end"))) == true));

is 100% wrong

[javalava]

Thank you thank you thank you. although now i am getting one error saying i may not have initialized the variable when it is.
String file;
Scanner scan = new Scanner(System.in);
System.out.println("Enter file names : ");
while (scan.hasNextLine()) {
file = scan.nextLine();
}
if (file.endsWith(".txt")) { ------------------->>>> error:variable may not have been initialized
System.out.println("Text File: " + file);
if (file.contains("del"));
System.out.println("Delete: " + file);
if (file.contains("del") && (file.endsWith(".txt")));
System.out.println("Text File: " + file);
}
}
}

[sepala]

I assume your whole code is under the main method. If it is, then you should expect that error because the "file" variable ISN'T INITIALIZED. So, it should be initialized in this way

String file = null;

not just

String file;


ALL THE LOCAL VARIABLES INSIDE A METHOD HAS TO BE INITIALIZED FIRST

[javalava]

Thanks. what line of code will i need to end the code when a blank line is entered?

[sepala]

your question is not clear. If you are asking "How do I close the operations if a blank line is entered", then this is the way.

1. Blank line means a NULL value OR just a space
2. Your code have to check whether the insertion is null or not.
3. If null, the while loop should break

Have a look at the following code

if(file==null || file.length()==0)
{
break;
}

put this code at the beginning of your while loop

[sepala]

Anyway, if you need anymore help. please copy and paste the complete class, because then only we can read the code easily