Question

I am writing a simple program, it writes “I love Java” 300 times to a text file, and I have it working as shown.

public class PrintLines {
    public static void main(String[] args) throws Exception{    
         java.io.File file = new java.io.File("myFile.txt");
         java.io.PrintWriter output = new java.io.PrintWriter(file);        
         int count = 1;
         while (count <= 300) {
             output.println(count + " I love Java!");
             count++;           
         }
         output.close();
    }
}

What I am unsure about, and have been trying to figure out on several webpages and the text book I use for class, is how do I do a try/catch block for this code and still create the file? It works, as I said, but I have to do it without the throws Exception in there. Can’t find a decent webpage which gives newbie answers for beginning programmers like me.

Answer 1

Your code should look similar to this.
The EXCEPTION should be IOException, I think.

public class PrintLines {
    public static void main(String[] args) {
        java.io.File file;
        java.io.PrintWriter output = null;
        try{
            file = new java.io.File("myFile.txt");
            output = new java.io.PrintWriter(file);
            int count = 1;
            while (count <= 300) {
                output.println(count + " I love Java!");
                count++;

           }
           output.close();
       } catch(*EXCEPTION*) {
       //Handle Exception
       } finally {
          if(output!=null) {
           output.close();
          }
       }
    }
}